34.00834.15734.08334.18434.00934.158434.08434.185334.010Montana Operations34.15934.085234.186134.01134.160Q334.086534.18734.012C00178934.161NorthWestern Corporation634.087202134.18834.013734.16234.088834.18934.01434.163934.08934.190O34.25734.231Q334.03534.05621NorthWestern Corporation34.2582021-09-3034.23234.03620212234.057Q334.259NorthWestern Corporation34.2332021-09-3034.0372334.058202134.260Q334.23424NorthWestern Corporation34.03834.0592021-09-3034.261202134.235Q334.03934.060NorthWestern Corporation34.262South Dakota Operations2021-09-3034.236202134.04034.061Q313550403434.263NorthWestern Corporation34.2372021-09-3034.04134.0622021Q334.21034.02234.239NorthWestern Corporation34.09734.10934.123734.19834.0492021-09-3034.023202134.11034.124834.211Q334.09834.19934.050NorthWestern Corporation34.0242021-09-3034.11134.125934.212202134.09934.20034.051Q334.02534.11234.1261034.21334.10034.20134.05234.24072133795234.02670753215534.11334.1271134.21434.10134.20234.05371736007034.02734.24134.11434.1281234.21534.10272133795234.20334.05434.02834.24234.1151355040341141834834.1291334.216332964376744046610166442734.20434.05510166442772704140582639723924202134.13734.1501234.076212021-09-3020212021-09-302021Q3NorthWestern Corporation13734.15122Q3NorthWestern CorporationQ34NorthWestern Corporation2021-09-3034.077NorthWestern Corporation2021-09-3020211434.13834.152232021-09-302021Q334.07820213Q3NorthWestern Corporation15Q32NorthWestern Corporation2021-09-3034.13934.15324NorthWestern Corporation2021-09-3020211634.0792021-09-302021Q382021Q3NorthWestern Corporation34.14034.15425Q3NorthWestern Corporation2021-09-3017NorthWestern Corporation2021-09-30202134.0802021-09-302021Q334.14134.155262021Q3NorthWestern Corporation18Q3NorthWestern Corporation2021-09-3034.081NorthWestern Corporation2021-09-3020211934.14234.156272021-09-302021Q32021Q3NorthWestern Corporation34.082Q3NorthWestern Corporation2021-09-3020NorthWestern Corporation2021-09-30202134.015NorthWestern Corporation34.22434.164434.103Q334.01634.16534.0022021-09-3034.225534.001202134.00334.01734.10434.1666202134.22634.00434.018734.16734.10534.227834.00534.01934.16834.106NorthWestern Corporation34.22892021-09-3034.00634.02034.16934.107Q334.2291034.00734.021NorthWestern Corporation34.17034.10834.23011Q320212021-09-3034.25034.21734.23834.09034.11634.20534.04234.06334.17734.1913263972392434.25134.11734.21834.09134.04334.06434.17834.19234.25234.11834.21934.09234.04434.06534.17934.19334.25334.20634.119134.22034.09334.04534.066234.18034.19434.25434.120434.20734.22134.09434.04634.06734.18134.195103703834.25534.121534.20834.22234.09550393431634.04734.06834.18234.19634.25634.122634.20934.223202949111534.09634.04834.18334.197306597527460170334.06934.2641234.26534.0701334.26634.07134.26734.07234.07334.07418025748934.07534.02934.24334.1432834.13034.171147734.030334.24434.144792934.13115234.03134.24534.14530134.132164463069013434.172634.03234.24634.146325534.1331734.173634.03334.24734.1473334.13418734.17434.03434.248134.14834834.1351934.175934.24934.14934.1362010334.176211 C001789 Cycle Power Partners LLC NWMT Pacificorp NF Montana OATT HORSESHOE JEFF 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Colstrip Partners BPA SFP Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 EDF Trading North America, LLC BPA Pacificorp NF Montana OATT BPAT.NWMT BRDY 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind NWMT NF Montana OATT GLWND2 NWMT.SYSTEM 2021-01-012021-09-30 C001789 TransAlta Energy Marketing WAPA AVISTA NF Montana OATT CROSSOVER AVAT.NWMT 2021-01-012021-09-30 C001789 Seattle City Light NF 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC WAPA Pacificorp NF Montana OATT CROSSOVER BRDY 2021-01-012021-09-30 C001789 MAG Energy Solutions WAPA Pacificorp NF Montana OATT CROSSOVER JEFF 2021-01-012021-09-30 C001789 ferc:Quarter3Member Montana Operations 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind AVISTA SFP Montana OATT GLWND2 AVAT.NWMT 2021-01-012021-09-30 C001789 Energy Keepers, Inc BPA NWMT NF Montana OATT BPAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 PacifiCorp Colstrip Partners Pacificorp SFP Montana OATT COLSTRIP YTP 2021-01-012021-09-30 C001789 SIS Studies 2021-01-012021-09-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2021-09-30 C001789 PacifiCorp BPA NWMT NF Montana OATT BPAT.NWMT COLSTRIP 2021-01-012021-09-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2021-01-012021-09-30 C001789 Flow-through Income Taxes (Montana) 2021-07-012021-09-30 C001789 ferc:JanuaryMember Montana Operations 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Pacificorp MATL NF Montana OATT BRDY MATL.NWMT 2021-01-012021-09-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2021-07-012021-09-30 C001789 ferc:CommonUtilityMember 2021-09-30 C001789 Optional Studiesferc:GenerationStudiesMember 2021-01-012021-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2021-09-30 C001789 Bonneville Power Administration BPA WAPA NF Montana OATT BPAT.NWMT  GREATFALLS 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL BPA SFP Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Optional Studies 2021-01-012021-09-30 C001789 Idaho Power Company NF 2021-01-012021-09-30 C001789 Avista Corporation NWMT BPA NF Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 ScheduleTransmissionOfElectricityByIsoOrRtoAbstract 2021-01-012021-09-30 C001789 (Less) (449.1) Provision for Rate Refunds 2021-01-012021-09-30 C001789 Common Stock Dividend 2020-01-012020-09-30 C001789 Brookfield Energy Marketing LP BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-09-30 C001789 Asset Retirement Obligation (South Dakota) 2021-01-012021-09-30 C001789 ferc:OtherUtilityMember 2021-01-012021-09-30 C001789 2021-09-30 C001789 Magris Talc USA, Inc. Energy Keepers Inc. Imerys Talc America, Inc. FNO Montana OATT Kerr Three Forks, MT 2021-01-012021-09-30 C001789 EDF Trading North America, LLC Pacificcorp NWMT NF Montana OATT BRDY COLSTRIP 2021-01-012021-09-30 C001789 Guzman Energy, LLC  Pacificorp Pacificorp NF Montana OATT YTP BRDY 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind MATL NF Montana OATT GLWND2 MATL.NWMT 2021-01-012021-09-30 C001789 MAG Energy Solutions NWMT MATL NF Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Talen Energy Marketing, LLC NWMT  BPAT LFP Montana OATT GTFALLSNWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group WAPA AVISTA NF Montana OATT GREATFALLS AVAT.NWMT 2021-01-012021-09-30 C001789 PacifiCorp NWMT NWMT NF Montana OATT COLSTRIP NWMT.SYSTEM 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp Pacificorp BPA NF Montana OATT YTP BPAT 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC Pacificorp BPA SFP Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 ferc:GasUtilityMember 2021-01-012021-09-30 C001789 Macquarie Energy LLC Pacificorp AVISTA NF Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative WAPA WAPA NF Montana OATT CROSSOVER GREATFALLS 2021-01-012021-09-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2021-07-012021-09-30 C001789 ferc:Quarter3Member 0 2021-01-012021-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE 98-001 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT Pacificorp NF Montana OATT JUDITHGAP JEFF 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative Morgan Stanley, Talen & WAPA Basin Electric Power Cooperative FNO Montana OATT Various in Montana Various NWMT & WAUW 2021-01-012021-09-30 C001789 2020-12-31 C001789 Macquarie Energy LLC NWMT AVISTA NF Montana OATT MATL.NWMT AVAT.NWMT 2021-01-012021-09-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2021-07-012021-09-30 C001789 Guzman Energy, LLC  Pacificorp AVISTA NF Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC AVISTA Pacificorp NF Montana OATT AVAT.NWMT BRDY 2021-01-012021-09-30 C001789 Shell Energy North America WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2021-06-30 C001789 The Energy Authority Pacificorp Pacificorp NF Montana OATT YTP BRDY 2021-01-012021-09-30 C001789 Dynasty Power Inc.  WAPA BPA SFP Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 Dynasty Power Inc.  Pacificorp BPA NF Montana OATT BRDY BPAT.NWMT 2021-01-012021-09-30 C001789 Brookfield Energy Marketing LP Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Colstrip Partners BPA NF Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 Basin Creek Capital Lease (Montana) 2021-09-30 C001789 Common Stock Dividend 2021-01-012021-09-30 C001789 City of Great Falls Energy Keepers Inc. City of Great Falls FNO Montana OATT Kerr Various in Montana 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group WAPA MATL NF Montana OATT CROSSOVER MATL.NWMT 2021-01-012021-09-30 C001789 Debt Financing Costs 2020-01-012020-09-30 C001789 ferc:TransmissionStudiesMember 2021-01-012021-09-30 C001789 Western Area Power Admin WAPA WAPA NF Montana OATT CANYONFERRY GREATFALLS 2021-01-012021-09-30 C001789 Investment in Equity Securities 2021-01-012021-09-30 C001789 Powerex  Corporation AVISTA Pacificorp NF Montana OATT AVAT.NWMT YTP 2021-01-012021-09-30 C001789 Amortization of 2021-01-012021-09-30 C001789 South Dakota Operationsferc:MayMember 2021-01-012021-09-30 C001789 Pension Plan (South Dakota) 2021-01-012021-09-30 C001789 Dynasty Power Inc.  BPA Pacificorp NF Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 Pension Plan (South Dakota) 2021-06-30 C001789 2021-01-012021-03-31 C001789 Avista Corporation AVISTA NWMT NF Montana OATT AVAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2021-07-012021-09-30 C001789 Energy Keepers, Inc NWMT BPA OLF Montana OATT KERR BPAT.NWMT 2021-01-012021-09-30 C001789 Powerex  Corporation MATL BPA NF Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Powerex  Corporation BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 LANGFORD, CITY OF WAPA LANGFORD LFP VOL 2 HURON 115 KV BUS LANGFORD 12.5 KV 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group BPA NWMT NF Montana OATT BPAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 EDF Trading North America, LLC AVISTA NWMT NF Montana OATT AVAT,NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 Puget Sound Energy Marketing Colstrip Partners BPA SFP Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 Avista Corporation AVISTA NWMT NF Montana OATT AVAT.NWMT COLSTRIP 2021-01-012021-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2021-07-012021-09-30 C001789 Shell Energy North America BPA Pacificorp NF Montana OATT BPAT.NWMT BRDY 2021-01-012021-09-30 C001789 Amortization of 2020-01-012020-09-30 C001789 Dynasty Power Inc.  WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group BPA Pacificorp NF Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 Other 2021-01-012021-09-30 C001789 Unbilled Revenues (South Dakota) 2021-09-30 C001789 EDF Trading North America, LLC AVISTA NWMT NF Montana OATT AVAT,NWMT COLSTRIP 2021-01-012021-09-30 C001789 ferc:OtherUtilityMember 2020-01-012020-09-30 C001789 Macquarie Energy LLC AVISTA Pacificorp NF Montana OATT AVAT.NWMT JEFF 2021-01-012021-09-30 C001789 Montana Resources Talen Energy & Energy Keepers, Inc. Montana Resources FNO Montana OATT Colstrip & Kerr Butte, MT 2021-01-012021-09-30 C001789 Powerex  Corporation Pacificorp Pacificorp NF Montana OATT BRDY YTP 2021-01-012021-09-30 C001789 ferc:ElectricUtilityMember 2021-01-012021-09-30 C001789 ferc:Quarter2Member Montana Operations 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 Western Area Power Admin WAPA WAPA SFP Montana OATT CROSSOVER GREATFALLS 2021-01-012021-09-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2021-06-30 C001789 ferc:Quarter4Member Montana Operations 2021-01-012021-09-30 C001789 ferc:GasUtilityMember 2021-09-30 C001789 Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003 2021-06-30 C001789 Macquarie Energy LLC NWMT BPA SFP Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2021-01-012021-09-30 C001789 ferc:CommonPlantElectricMemberferc:ElectricUtilityMember 2021-01-012021-09-30 C001789 Benefis Health Systems Energy Keepers inc. Benefis Health Systems FNO Montana OATT Kerr Various in Montana 2021-01-012021-09-30 C001789 EDF Trading North America, LLC NWMT Pacificorp SFP Montana OATT COLSTRIP YTP 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind Pacificorp NF Montana OATT GLWND1 JEFF 2021-01-012021-09-30 C001789 Flow-through Income Taxes (South 2021-09-30 C001789 ferc:OtherUtility2Member 2021-09-30 C001789 Avista Corporation AVISTA AVISTA SFP Montana OATT COLSTRIP AVAT.NMWT 2021-01-012021-09-30 C001789 Shell Energy North America Pacificorp AVISTA NF Montana OATT BRDY AVAT.NWMT 2021-01-012021-09-30 C001789 Macquarie Energy LLC WAPA Pacificorp NF Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 Dynasty Power Inc.  Pacificorp AVISTA NF Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Basin Creek Capital Lease (Montana) 2021-06-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2021-01-012021-09-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2021-06-30 C001789 Basin Creek Capital Lease (Montana) 2021-07-012021-09-30 C001789 ferc:TransmissionStudiesMember SIS Studies 2021-01-012021-09-30 C001789 EDF Trading North America, LLC NWMT  BPAT NF Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind Pacificorp NF Montana OATT GLWND2 JEFF 2021-01-012021-09-30 C001789 MONTANA POINT-TO-POINT      2021-01-012021-09-30 C001789 FEA Studies 2021-01-012021-09-30 C001789 Asset Retirement Obligation (Montana) 2021-07-012021-09-30 C001789 Shell Energy North America Pacificorp Pacificorp NF Montana OATT YTP BRDY 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative Basin Electric & WAPA Basin Electric Power Cooperative FNO Montana OATT Crossover  Various NWMT & WAUW 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-07-012021-09-30 C001789 Portland General Electric Company AVISTA NWMT NF Montana OATT AVAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE 98-001 2021-07-012021-09-30 C001789 FAS 112 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2021-06-30 C001789 Morgan Stanley Capital  Group AVISTA Pacificorp NF Montana OATT AVAT.NWMT JEFF 2021-01-012021-09-30 C001789 Supply: 2021-01-012021-09-30 C001789 The Energy Authority BPA Pacificorp NF Montana OATT BPAT.NWMT BRDY 2021-01-012021-09-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2021-06-30 C001789 Shell Energy North America BPA Pacificorp NF Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-06-30 C001789 Flow-through Income Taxes (South 2021-06-30 C001789 Basin Electric Power Cooperative WAPA NWMT SFP Montana OATT CROSSOVER NWMT.SYSTEM 2021-01-012021-09-30 C001789 Uniper Global Commodities North America LLC Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 South Dakota Operations 2021-01-012021-09-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2021-07-012021-09-30 C001789 TransAlta Energy Marketing MATL BPA NF Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Western Area Power Administration WAPA Western Area Power Administration FNO Montana OATT Crossover Various NWMT & WAUW 2021-01-012021-09-30 C001789 Asset Retirement Obligation (Montana) 2021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT Pacificorp NF Montana OATT BGI JEFF 2021-01-012021-09-30 C001789 Study of the Costs & Benefits of Customer Generators (Montana) 2021-06-30 C001789 Morgan Stanley Capital  Group NWMT BPA NF Montana OATT KERR BPAT.NWMT 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC Pacificorp AVISTA SFP Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Other Noncash Charges to Income, Net 2021-01-012021-09-30 C001789 Dynasty Power Inc.  Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 The Energy Authority WAPA BPAT NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-09-30 C001789 Macquarie Energy LLC BPA NWMT SFP Montana OATT BPAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 SOUTH DAKOTA 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL Pacificorp NF Montana OATT MATL.NWMT BRDY 2021-01-012021-09-30 C001789 Sibanye-Stillwater Energy Keepers Inc. Stillwater Mining Company FNO Montana OATT Kerr Various in Montana 2021-01-012021-09-30 C001789 CHS, Inc. Morgan Stanley CHS, Inc. FNO Montana OATT MATL.NWMT Various in Montana 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL Pacificorp NF Montana OATT MATL.NWMT JEFF 2021-01-012021-09-30 C001789 Montana Operations 2021-01-012021-09-30 C001789 Bonneville Power Administration BPA  Bonneville Power Administration FNO Montana OATT BPAT.NWMT    Various in Montana 2021-01-012021-09-30 C001789 Energy Keepers, Inc NWMT BPA NF Montana OATT KERR BPAT.NWMT 2021-01-012021-09-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind BPA NF Montana OATT GLWND1 BPAT.NWMT 2021-01-012021-09-30 C001789 Roseburg Forest Products Company Talen Energy Roseburg Forest Products Company FNO Montana OATT Colstrip Missoula, MT 2021-01-012021-09-30 C001789 Study of the Costs & Benefits of Customer Generators (Montana) 2021-07-012021-09-30 C001789 Bonneville Power Administration BPA NWMT NF Montana OATT BPAT.NWMT  NWMT.SYSTEM 2021-01-012021-09-30 C001789 ferc:ElectricUtilityMemberferc:IntangiblePlantMember 2021-01-012021-09-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2021-09-30 C001789 Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003 2021-09-30 C001789 Basin Creek Capital Lease (Montana) 2021-01-012021-09-30 C001789 Dynasty Power Inc.  WAPA AVISTA SFP Montana OATT CROSSOVER AVAT.NWMT 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT BPA SFP Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 TransAlta Energy Marketing WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 MAG Energy Solutions WAPA MATL NF Montana OATT CROSSOVER MATL.NWMT 2021-01-012021-09-30 C001789 ferc:HydraulicProductionPlantConventionalMemberferc:ElectricUtilityMember 2021-01-012021-09-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2021-09-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2021-06-30 C001789 Excess Deferred Income Taxes 2021-09-30 C001789 South Dakota Operationsferc:SeptemberMember 2021-01-012021-09-30 C001789 ferc:FebruaryMember Montana Operations 2021-01-012021-09-30 C001789 TransAlta Energy Marketing AVISTA NWMT NF Montana OATT AVAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 EDF Trading North America, LLC NWMT MATL.NWMT NF Montana OATT COLSTRIP MATL.NWMT 2021-01-012021-09-30 C001789 Guzman Energy, LLC  BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 Vigilante Elec. Coop OLF 2021-01-012021-09-30 C001789 Other 2020-01-012020-09-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2021-09-30 C001789 Shell Energy North America WAPA Pacificorp NF Montana OATT CROSSOVER JEFF 2021-01-012021-09-30 C001789 ScheduleRegionalTransmissionServiceRevenuesAbstract 2021-01-012021-09-30 C001789 Idaho Power Company Pacificorp Idaho SFP Montana OATT JEFF TNDY 2021-01-012021-09-30 C001789 2021-01-012021-09-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2021-06-30 C001789 Flow-through Income Taxes (Montana) 2021-09-30 C001789 Portland General Electric Company Colstrip Partners NWMT NF Montana OATT COLSTRIP TOWNSEND 2021-01-012021-09-30 C001789 Shell Energy North America Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Shell Energy North America NWMT BPA NF Montana OATT CROOKEDFALLS BPAT.NWMT 2021-01-012021-09-30 C001789 Town of Philipsburg Town of Philipsburg Town of Philipsburg FNO Montana OATT Philipsburg Substation Philipsburg, MT 2021-01-012021-09-30 C001789 Talen Montana, LLC Avista Energy Colstrip Steam Electric Station FNO Montana OATT Colstrip Nichols Pump Sub 2021-01-012021-09-30 C001789 PacifiCorp BPA Pacificorp SFP Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 Portland General Electric Company AVISTA Pacificorp NF Montana OATT AVAT.NWMT YTP 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes 2021-06-30 C001789 Energy Keepers, Inc NWMT AVA SFP Montana OATT COLSTRIP AVAT.NWMT 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp BPA Pacificorp NF Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 EDF Trading North America, LLC NWMT NWMT NF Montana OATT COLSTRIP COLSTRIP 2021-01-012021-09-30 C001789 FAS 112 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2021-01-012021-09-30 C001789 Capital Power Energy Marketing, Inc. MATL BPAT NF Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Shell Energy North America Pacificorp AVISTA NF Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Glacier Electric Coop 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL Glacier Wind NF Montana OATT MATL.NWMT GLWND1 2021-01-012021-09-30 C001789 ferc:AugustMember Montana Operations 2021-01-012021-09-30 C001789 Naturener Power Watch, LLC Glacier Wind Glacier Wind SFP Montana OATT GLWND1 GLWND2 2021-01-012021-09-30 C001789 Western Area Power Admin WAPA NWMT NF Montana OATT GREATFALLS NWMT.SYSTEM 2021-01-012021-09-30 C001789 Southwest Power Pool (SPP) SPP Various LFP SCH 7 Various Various 2021-01-012021-09-30 C001789 Flow-through Income Taxes (Montana) 2021-06-30 C001789 Macquarie Energy LLC Pacifcorp Pacificorp NF Montana OATT YTP JEFF 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2021-06-30 C001789 Asset Retirement Obligation (South Dakota) 2021-07-012021-09-30 C001789 Dynasty Power Inc.  BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 ferc:TransmissionPlantMemberferc:ElectricUtilityMember 2021-01-012021-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2021-07-012021-09-30 C001789 Morgan Stanley Capital  Group CNTP Glacier Wind NF Montana OATT HARDIN GLWND1 2021-01-012021-09-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2021-01-012021-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2021-09-30 C001789 Basin Electric Power Cooperative NWMT Pacificorp NF Montana OATT COLSTRIP YTP 2021-01-012021-09-30 C001789 Avista Corporation NWMT Pacificorp NF Montana OATT COLSTRIP BRDY 2021-01-012021-09-30 C001789 ferc:AprilMember Montana Operations 2021-01-012021-09-30 C001789 Portland General Electric Company AVISTA AVISTA NF Montana OATT COLSTRIP AVAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group CNTP BPA NF Montana OATT HARDIN BPAT.NWMT 2021-01-012021-09-30 C001789 Dynasty Power Inc.  NWMT BPAT NF Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC WAPA BPA SFP Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2021-01-012021-09-30 C001789 Macquarie Energy LLC Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 East River FNS 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC Pacificorp NWMT SFP Montana OATT YTP NWMT.SYSTEM 2021-01-012021-09-30 C001789 Asset Retirement Obligation (Montana) 2021-06-30 C001789 Debt Financing Costs 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (Montana) 2021-01-012021-09-30 C001789 Dynasty Power Inc.  WAPA AVISTA NF Montana OATT CROSSOVER AVAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group CNTP MATL SFP Montana OATT HARDIN MATL.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind BPA NF Montana OATT GLWND2 BPAT.NWMT 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC Pacificorp WAPA NF Montana OATT YTP CROSSOVER 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group WAPA Pacificorp NF Montana OATT GREATFALLS BRDY 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT BPA NF Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp WAPA NWMT SFP Montana OATT CROSSOVER NWMT.SYSTEM 2021-01-012021-09-30 C001789 TransAlta Energy Marketing BPA Pacificorp NF Montana OATT BPAT.NWMT BRDY 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp Pacificorp NWMT SFP Montana OATT BRDY NWMT.SYSTEM 2021-01-012021-09-30 C001789 Shell Energy North America Pacificorp AVISTA SFP Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind AVISTA NF Montana OATT GLWND1 AVAT.NWMT 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp WAPA Pacificorp NF Montana OATT CROSSOVER JEFF 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group BPA MATL SFP Montana OATT BPAT.NWMT MATL.NWMT 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-06-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes 2021-07-012021-09-30 C001789 Portland General Electric Company AVISTA NWMT NF Montana OATT AVAT.NWMT COLSTRIP 2021-01-012021-09-30 C001789 Avista Corporation AVISTA AVISTA NF Montana OATT COLSTRIP AVAT.NMWT 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative NWMT WAPA NF Montana OATT COLSTRIP GREATFALLS 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative Pacificorp WAPA NF Montana OATT YTP GREATFALLS 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind BPA SFP Montana OATT GLWND2 BPAT.NWMT 2021-01-012021-09-30 C001789 Guzman Energy, LLC  Pacificorp AVISTA SFP Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-07-012021-09-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2021-07-012021-09-30 C001789 ExxonMobil Corporation Talen Energy ExxonMobil Corporation FNO Montana OATT Colstrip Billings, MT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group WAPA MATL NF Montana OATT GREATFALLS MATL.NWMT 2021-01-012021-09-30 C001789 PacifiCorp NWMT NWMT SFP Montana OATT COLSTRIP NWMT.SYSTEM 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC WAPA Pacificorp SFP Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 PacifiCorp Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 SOUTH DAKOTA      2021-01-012021-09-30 C001789 Big Horn County Electric Coop. Inc. WAPA Big Horn County Electric Coop. Inc. FNO Montana OATT Various & Great Falls  Various in Montana 2021-01-012021-09-30 C001789 Powerex  Corporation Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2021-01-012021-09-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2021-01-012021-09-30 C001789 ferc:ElectricUtilityMember 2021-09-30 C001789 ferc:OtherUtilityMember 2021-09-30 C001789 2020-01-012020-09-30 C001789 2020-09-30 C001789 Line of Credit (Repayments) Borrowings, Net 2021-01-012021-09-30 C001789 EDF Trading North America, LLC AVISTA Pacificorp SFP Montana OATT AVAT,NWMT YTP 2021-01-012021-09-30 C001789 TransAlta Energy Marketing BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 Asset Retirement Obligation (South Dakota) 2021-09-30 C001789 Bonneville Power Admin NF 2021-01-012021-09-30 C001789 ferc:SeptemberMember Montana Operations 2021-01-012021-09-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2021-06-30 C001789 Macquarie Energy LLC NWMT AVISTA SFP Montana OATT MATL.NWMT AVAT.NWMT 2021-01-012021-09-30 C001789 Powerex  Corporation BPA Pacificorp NF Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL AVISTA NF Montana OATT MATL.NWMT AVAT.NWMT 2021-01-012021-09-30 C001789 GROTON, CITY OF WAPA GROTON LFP VOL 2 HURON 115 KV BUS GROTON 69 KV 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 2021-07-012021-09-30 C001789 Capital Power Energy Marketing, Inc. BPA NWMT NF Montana OATT BPAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 REC Silicon Company Morgan Stanley REC Silicon Company FNO Montana OATT Hardin  Butte, MT 2021-01-012021-09-30 C001789 ferc:TransmissionStudiesMember Line Interconnection Studies 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL BPA NF Montana OATT MATL.NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind NWMT SFP Montana OATT GLWND2 GREATFALLS 2021-01-012021-09-30 C001789 Powerex  Corporation BPA AVISTA NF Montana OATT BPAT.NWMT AVAT.NWMT 2021-01-012021-09-30 C001789 Powerex  Corporation BPA Pacificorp SFP Montana OATT BPAT.NWMT BRDY 2021-01-012021-09-30 C001789 Puget Sound Energy Marketing Colstrip Partners BPA NF Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 Beartooth Electric Cooperative, Inc. WAPA Beartooth Electric Cooperative, Inc. FNO Montana OATT Fort Peck Various in Montana 2021-01-012021-09-30 C001789 ferc:GenerationStudiesMember 2021-01-012021-09-30 C001789 ferc:Quarter1Member South Dakota Operations 2021-01-012021-09-30 C001789 Guzman Energy, LLC  Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 South Dakota Operationsferc:JanuaryMember 2021-01-012021-09-30 C001789 South Dakota Operationsferc:AprilMember 2021-01-012021-09-30 C001789 Investment in Equity Securities 2020-01-012020-09-30 C001789 Portland General Electric Company Colstrip Partners AVISTA NF Montana OATT COLSTRIP AVAT.NWMT 2021-01-012021-09-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 Study of the Costs & Benefits of Customer Generators (Montana) 2021-09-30 C001789 The Energy Authority Pacificorp BPAT NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 PacifiCorp Pacificorp NWMT NF Montana OATT YTP COLSTRIP 2021-01-012021-09-30 C001789 Aspen Air U.S., LLC Talen Energy Aspen Air Corporation FNO Montana OATT Colstrip  Billings, MT 2021-01-012021-09-30 C001789 FAS 112 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2021-09-30 C001789 Dynasty Power Inc.  WAPA Pacificorp NF Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp WAPA Pacificorp NF Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes 2021-01-012021-09-30 C001789 Shell Energy North America AVISTA Pacificorp NF Montana OATT AVAT.NWMT YTP 2021-01-012021-09-30 C001789 Macquarie Energy LLC Pacificorp AVISTA SFP Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 Guzman Energy, LLC  AVISTA Pacificorp NF Montana OATT AVAT.NWMT YTP 2021-01-012021-09-30 C001789 Line of Credit (Repayments) Borrowings, Net 2020-01-012020-09-30 C001789 Montana State University - Bozeman WAPA Montana State University - Bozeman FNO Montana OATT Fort Peck West Great Falls, MT 2021-01-012021-09-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2021-07-012021-09-30 C001789 Pension Plan (Montana) 2021-07-012021-09-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2021-06-30 C001789 Phillips 66 Company Shell Energy Phillips 66 Company FNO Montana OATT BPAT.NWMT Various in Montana 2021-01-012021-09-30 C001789 Flow-through Income Taxes (Montana) 2021-01-012021-09-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2021-07-012021-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.7.90 and Docket 2001.1.5; Annual Amortization 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (Montana) 2021-07-012021-09-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2021-09-30 C001789 Western Area Power Admin WAPA NWMT NF Montana OATT CROSSOVER NWMT.SYSTEM 2021-01-012021-09-30 C001789 FAC Studiesferc:GenerationStudiesMember 2021-01-012021-09-30 C001789 The Energy Authority Pacificorp WAPA NF Montana OATT YTP CROSSOVER 2021-01-012021-09-30 C001789 Asset Retirement Obligation (South Dakota) 2021-06-30 C001789 MONTANA 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind Pacificorp NF Montana OATT GLWND1 BRDY 2021-01-012021-09-30 C001789 2020-07-012020-09-30 C001789 Macquarie Energy LLC BPA Pacificorp SFP Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2021-01-012021-09-30 C001789 ferc:ElectricUtilityMemberferc:GeneralPlantMember 2021-01-012021-09-30 C001789 EDF Trading North America, LLC AVISTA BPA NF Montana OATT AVAT,NWMT BPAT.NWMT 2021-01-012021-09-30 C001789 Barretts Minerals, Inc. Energy Keepers inc. Barretts Minerals, Inc. FNO Montana OATT Kerr Dillon, MT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group WAPA BPA NF Montana OATT GREATFALLS BPAT.NWMT 2021-01-012021-09-30 C001789 Southwest Power Pool (SPP) SPP Various FNS SCH 9 Various Various 2021-01-012021-09-30 C001789 ferc:MarchMember Montana Operations 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind MATL NF Montana OATT GLWND1 MATL.NWMT 2021-01-012021-09-30 C001789 Guzman Energy, LLC  AVISTA Pacificorp SFP Montana OATT AVAT.NWMT YTP 2021-01-012021-09-30 C001789 Portland General Electric Company Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Market Monitoring & Compliance 2021-01-012021-09-30 C001789 MAG Energy Solutions WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 Market Monitoring & Compliance 2021-01-012021-03-31 C001789 General Mills Operations, LLC Talen Energy General Mills Operations, LLC FNO Montana OATT Colstrip Great Falls, MT 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative Pacificorp NWMT NF Montana OATT YTP NWMT.SYSTEM 2021-01-012021-09-30 C001789 Idaho Power Company Pacificorp Idaho NF Montana OATT JEFF TNDY 2021-01-012021-09-30 C001789 The Energy Authority Pacificorp AVA NF Montana OATT YTP AVAT.NWMT 2021-01-012021-09-30 C001789 EDF Trading North America, LLC AVISTA AVISTA NF Montana OATT COLSTRIP AVAT.NWMT 2021-01-012021-09-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2021-07-012021-09-30 C001789 ferc:OtherUtility3Member 2021-09-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2021-01-012021-09-30 C001789 Calumet Refining, LLC Talen Energy Calumet Montana Refining Company, Inc. FNO Montana OATT Colstrip Great Falls, MT 2021-01-012021-09-30 C001789 Shell Energy North America WAPA AVISTA NF Montana OATT CROSSOVER AVAT.NWMT 2021-01-012021-09-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2021-07-012021-09-30 C001789 South Dakota Operationsferc:Quarter3Member 2021-01-012021-09-30 C001789 Powerex  Corporation BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group AVISTA MATL SFP Montana OATT AVAT.NWMT MATL.NWMT 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative Pacificorp WAPA NF Montana OATT YTP CROSSOVER 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp WAPA AVISTA SFP Montana OATT CROSSOVER AVAT.NWMT 2021-01-012021-09-30 C001789 Avista NF 2021-01-012021-09-30 C001789 Southwest Power Pool (SPP) SPP Various NF SCH 8 Various Various 2021-01-012021-09-30 C001789 ferc:MarchMember South Dakota Operations 2021-01-012021-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.7.90 and Docket 2001.1.5; Annual Amortization 2021-06-30 C001789 Morgan Stanley Capital  Group BPA MATL NF Montana OATT BPAT.NWMT MATL.NWMT 2021-01-012021-09-30 C001789 Other Noncash Charges to Income, Net 2020-01-012020-09-30 C001789 GCC Three Forks, LLC Energy Keepers Inc. GCC Three Forks, LLC FNO Montana OATT Kerr Three Forks, MT 2021-01-012021-09-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group CNTP MATL NF Montana OATT HARDIN MATL.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind NWMT SFP Montana OATT GLWND2 NWMT.SYSTEM 2021-01-012021-09-30 C001789 Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind Glacier Wind NF Montana OATT GLWND1 GLWND2 2021-01-012021-09-30 C001789 BRYANT, CITY OF WAPA BRYANT LFP VOL 2 HURON 115 KV BUS BRYANT 25 KV 2021-01-012021-09-30 C001789 Guzman Energy, LLC  Pacificorp BPA SFP Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Dynasty Power Inc.  AVISTA Pacificorp NF Montana OATT AVAT.NWMT YTP 2021-01-012021-09-30 C001789 Pension Plan (South Dakota) 2021-09-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2021-06-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2021-07-012021-09-30 C001789 ferc:GasUtilityMember 2020-01-012020-09-30 C001789 Powerex  Corporation WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 FAC Studies 2021-01-012021-09-30 C001789 Western Area Power Admin WAPA WAPA SFP Montana OATT GREATFALLS CROSSOVER 2021-01-012021-09-30 C001789 South Dakota Operationsferc:JulyMember 2021-01-012021-09-30 C001789 The Energy Authority WAPA Pacificorp NF Montana OATT CROSSOVER BRDY 2021-01-012021-09-30 C001789 Portland General Electric Company BPA NWMT NF Montana OATT BPAT.NWMT COLSTRIP 2021-01-012021-09-30 C001789 The Energy Authority Pacificorp BPAT NF Montana OATT BRDY BPAT.NWMT 2021-01-012021-09-30 C001789 Pension Plan (Montana) 2021-09-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2021-01-012021-09-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2021-06-30 C001789 Macquarie Energy LLC NWMT Pacificorp NF Montana OATT COLSTRIP JEFF 2021-01-012021-09-30 C001789 South Dakota Operationsferc:AugustMember 2021-01-012021-09-30 C001789 Basin Electric Power Cooperative WAPA Pacificorp NF Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 Study of the Costs & Benefits of Customer Generators (Montana) 2021-01-012021-09-30 C001789 MAG Energy Solutions WAPA Pacificorp NF Montana OATT CROSSOVER BRDY 2021-01-012021-09-30 C001789 Macquarie Energy LLC Pacificorp BPA SFP Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2021-09-30 C001789 Phillips 66 Company BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC Pacificorp Pacificorp NF Montana OATT YTP BRDY 2021-01-012021-09-30 C001789 Shell Energy North America BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 Unbilled Revenues (South Dakota) 2021-01-012021-09-30 C001789 Energy Keepers, Inc NWMT BPA LFP Montana OATT KERR BPAT.NWMT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group AVISTA MATL NF Montana OATT AVAT.NWMT MATL.NWMT 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT Pacificorp SFP Montana OATT COLSTRIP JEFF 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL AVISTA SFP Montana OATT MATL.NWMT AVAT.NWMT 2021-01-012021-09-30 C001789 ferc:ElectricUtilityMemberferc:OtherProductionPlantMember 2021-01-012021-09-30 C001789 Rainbow Energy Marketing Corp WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 Dynasty Power Inc.  Pacificorp Pacificorp NF Montana OATT YTP BRDY 2021-01-012021-09-30 C001789 Energy Keepers, Inc BPA Pacificorp SFP Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group AVISTA Glacier Wind NF Montana OATT AVAT.NWMT GLWND1 2021-01-012021-09-30 C001789 Dynasty Power Inc.  Pacificorp WAPA NF Montana OATT YTP CROSSOVER 2021-01-012021-09-30 C001789 Great Falls Public Schools Energy Keepers Inc. Great Falls Public Schools FNO Montana OATT Kerr Great Falls, MT 2021-01-012021-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE 98-001 2021-06-30 C001789 ferc:JuneMember Montana Operations 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group MATL Pacificorp SFP Montana OATT MATL.NWMT JEFF 2021-01-012021-09-30 C001789 Portland General Electric Company Colstrip Partners BPA NF Montana OATT COLSTRIP BPAT.NWMT 2021-01-012021-09-30 C001789 Macquarie Energy LLC BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 Ash Grove Cement Energy Keepers Inc. Ash Grove Cement FNO Montana OATT Kerr Clancy, MT 2021-01-012021-09-30 C001789 Pension Plan (Montana) 2021-01-012021-09-30 C001789 Flow-through Income Taxes (South 2021-07-012021-09-30 C001789 Western Area Power Administration WAPA Malmstrom Air Force Base FNO Montana OATT Fort Peck West Great Falls, MT 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group WAPA Pacificorp NF Montana OATT GREATFALLS JEFF 2021-01-012021-09-30 C001789 FEA Studiesferc:GenerationStudiesMember 2021-01-012021-09-30 C001789 Western Area Power Admin WAPA WAPA NF Montana OATT CANYONFERRY CROSSOVER 2021-01-012021-09-30 C001789 Line Interconnection Studies 2021-01-012021-09-30 C001789 Macquarie Energy LLC Pacifcorp NWMT NF Montana OATT YTP MATL.NWMT 2021-01-012021-09-30 C001789 Shell Energy North America Pacificorp BPA SFP Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Macquarie Energy LLC BPA Pacificorp NF Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 ferc:DistributionPlantMemberferc:ElectricUtilityMember 2021-01-012021-09-30 C001789 Treasury Stock Activity 2020-01-012020-09-30 C001789 Suiza Dairy Group, LLC Talen Energy Suiza Dairy Group, LLC FNO Montana OATT Colstrip Various in Montana 2021-01-012021-09-30 C001789 The Energy Authority BPA Pacificorp NF Montana OATT BPAT.NWMT JEFF 2021-01-012021-09-30 C001789 Bonneville Power Admin OLF 2021-01-012021-09-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2021-01-012021-09-30 C001789 ferc:TransmissionStudiesMember FAC Studies 2021-01-012021-09-30 C001789 Dynasty Power Inc.  Pacificorp NWMT NF Montana OATT BRDY MATL.NWMT 2021-01-012021-09-30 C001789 Energy Keepers, Inc NWMT Pacificorp NF Montana OATT COLSTRIP BRDY 2021-01-012021-09-30 C001789 Asset Retirement Obligation (Montana) 2021-01-012021-09-30 C001789 The Energy Authority BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 South Dakota Operationsferc:Quarter2Member 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT Pacificorp NF Montana OATT COLSTRIP BRDY 2021-01-012021-09-30 C001789 Dynasty Power Inc.  BPA NWMT NF Montana OATT BPAT.NWMT MATL.NWMT 2021-01-012021-09-30 C001789 Line of Credit (Repayments) Borrowings, Net 2021-01-012021-09-30 C001789 Macquarie Energy LLC WAPA BPA NF Montana OATT CROSSOVER BPAT.NWMT 2021-01-012021-09-30 C001789 Puget Sound Energy Marketing BPA NWMT NF Montana OATT BPAT.NWMT COLSTRIP 2021-01-012021-09-30 C001789 Treasury Stock Activity 2021-01-012021-09-30 C001789 Flow-through Income Taxes (South 2021-01-012021-09-30 C001789 Capital Power Energy Marketing, Inc. BPA MATL NF Montana OATT BPAT.NWMT MATL.NWMT 2021-01-012021-09-30 C001789 Market Monitoring & Compliance 2021-01-012021-06-30 C001789 Morgan Stanley Capital  Group BPA Glacier Wind NF Montana OATT BPAT.NWMT GLWND1 2021-01-012021-09-30 C001789 Energy Keepers, Inc NWMT Pacificorp LFP Montana OATT KERR BRDY 2021-01-012021-09-30 C001789 ferc:GenerationStudiesMember SIS Studies 2021-01-012021-09-30 C001789 ferc:MayMember Montana Operations 2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (Montana) 2021-06-30 C001789 2021-06-30 C001789 Shell Energy North America WAPA Pacificorp NF Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind AVISTA NF Montana OATT GLWND2 AVAT.NWMT 2021-01-012021-09-30 C001789 Dynasty Power Inc.  Pacificorp Pacificorp NF Montana OATT YTP JEFF 2021-01-012021-09-30 C001789 Portland General Electric Company BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 Atlas Power, LLC Tenaska Atlas Power, LLC FNO Montana OATT BPAT.NWMT Butte, MT 2021-01-012021-09-30 C001789 Day Ahead & Real Time Admin 2021-01-012021-03-31 C001789 MAG Energy Solutions NWMT Pacificorp NF Montana OATT MATL.NWMT JEFF 2021-01-012021-09-30 C001789 TransAlta Energy Marketing WAPA Pacificorp NF Montana OATT CROSSOVER BRDY 2021-01-012021-09-30 C001789 Southwest Power Pool 2021-01-012021-09-30 C001789 Bonneville Power Administration BPA Pacificorp NF Montana OATT BPAT.NWMT  YTP 2021-01-012021-09-30 C001789 Cycle Power Partners LLC NWMT Pacificorp NF Montana OATT HORSESHOE BRDY 2021-01-012021-09-30 C001789 The Energy Authority BPA WAPA NF Montana OATT BPAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 ferc:ElectricUtilityMember 2020-01-012020-09-30 C001789 Unbilled Revenues (South Dakota) 2021-07-012021-09-30 C001789 Rainbow Energy Marketing Corp Pacificorp WAPA NF Montana OATT YTP CROSSOVER 2021-01-012021-09-30 C001789 2019-12-31 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2021-09-30 C001789 ferc:Quarter1Member Montana Operations 2021-01-012021-09-30 C001789 The Energy Authority Pacificorp WAPA NF Montana OATT BRDY CROSSOVER 2021-01-012021-09-30 C001789 Day Ahead & Real Time Admin 2021-01-012021-06-30 C001789 South Dakota Operationsferc:JuneMember 2021-01-012021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind BPA SFP Montana OATT GLWND1 BPAT.NWMT 2021-01-012021-09-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2021-06-30 C001789 Basin Electric Power Cooperative WAPA WAPA LFP Montana OATT CROSSOVER GREATFALLS 2021-01-012021-09-30 C001789 Pension Plan (Montana) 2021-06-30 C001789 Unbilled Revenues (South Dakota) 2021-06-30 C001789 Morgan Stanley Capital  Group Glacier Wind AVISTA SFP Montana OATT GLWND1 AVAT.NWMT 2021-01-012021-09-30 C001789 The Energy Authority WAPA Pacificorp NF Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2021-06-30 C001789 The Energy Authority Pacificorp Pacificorp NF Montana OATT YTP JEFF 2021-01-012021-09-30 C001789 The Energy Authority WAPA AVA NF Montana OATT CROSSOVER AVAT.NWMT 2021-01-012021-09-30 C001789 MONTANA CHOICE TRANSMISSION      2021-01-012021-09-30 C001789 Excess Deferred Income Taxes (Montana) 2021-09-30 C001789 EDF Trading North America, LLC AVISTA NWMT NF Montana OATT AVAT,NWMT GTFALLSNWMT 2021-01-012021-09-30 C001789 Portland General Electric Company BPA NWMT NF Montana OATT BPAT.NWMT NWMT.SYSTEM 2021-01-012021-09-30 C001789 Day Ahead & Real Time Admin 2021-01-012021-09-30 C001789 ferc:JulyMember Montana Operations 2021-01-012021-09-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2021-09-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2021-09-30 C001789 Morgan Stanley Capital  Group Glacier Wind Pacificorp NF Montana OATT GLWND2 BRDY 2021-01-012021-09-30 C001789 2021-01-012021-06-30 C001789 South Dakota Operationsferc:FebruaryMember 2021-01-012021-09-30 C001789 TransAlta Energy Marketing Pacificorp BPA NF Montana OATT YTP BPAT.NWMT 2021-01-012021-09-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2021-07-012021-09-30 C001789 Morgan Stanley Capital  Group NWMT MATL NF Montana OATT COLSTRIP MATL.NWMT 2021-01-012021-09-30 C001789 Southwest Power Pool FNS 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT Pacificorp NF Montana OATT MATL.NWMT JEFF 2021-01-012021-09-30 C001789 Brookfield Energy Marketing LP NWMT WAPA NF Montana OATT COLSTRIP CROSSOVER 2021-01-012021-09-30 C001789 Mercuria Energy America, LLC WAPA Pacificorp NF Montana OATT CROSSOVER YTP 2021-01-012021-09-30 C001789 Portland General Electric Company Colstrip Partners Pacificorp SFP Montana OATT COLSTRIP BRDY 2021-01-012021-09-30 C001789 Macquarie Energy LLC NWMT Pacificorp NF Montana OATT STILLWIND JEFF 2021-01-012021-09-30 C001789 ferc:SteamProductionPlantMemberferc:ElectricUtilityMember 2021-01-012021-09-30 C001789 Dynasty Power Inc.  BPA Pacificorp NF Montana OATT BPAT.NWMT YTP 2021-01-012021-09-30 C001789 EDF Trading North America, LLC BPA NWMT NF Montana OATT BPAT.NWMT COLSTRIP 2021-01-012021-09-30 C001789 Powerex  Corporation AVISTA WAPA NF Montana OATT AVAT.NWMT CROSSOVER 2021-01-012021-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.7.90 and Docket 2001.1.5; Annual Amortization 2021-07-012021-09-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2021-09-30 utr:MWh iso4217:USD ns:year utr:MW xbrli:pure
THIS FILING IS
Item 1:
An Initial (Original) Submission
OR
Resubmission No.

FERC FINANCIAL REPORT
FERC FORM No. 1: Annual Report of
Major Electric Utilities, Licensees
and Others and Supplemental
Form 3-Q: Quarterly Financial Report

These reports are mandatory under the Federal Power Act, Sections 3, 4(a), 304 and 309, and 18 CFR 141.1 and 141.400. Failure to report may result in criminal fines, civil penalties and other sanctions as provided by law. The Federal Energy Regulatory Commission does not consider these reports to be of confidential nature
Exact Legal Name of Respondent (Company)

NorthWestern Corporation
Year/Period of Report

End of:
2021
/
Q3


INSTRUCTIONS FOR FILING FERC FORM NOS. 1 and 3-Q

GENERAL INFORMATION

  1. Purpose

    FERC Form No. 1 (FERC Form 1) is an annual regulatory requirement for Major electric utilities, licensees and others (18 C.F.R. § 141.1). FERC Form No. 3-Q ( FERC Form 3-Q)is a quarterly regulatory requirement which supplements the annual financial reporting requirement (18 C.F.R. § 141.400). These reports are designed to collect financial and operational information from electric utilities, licensees and others subject to the jurisdiction of the Federal Energy Regulatory Commission. These reports are also considered to be non-confidential public use forms.
  2. Who Must Submit

    Each Major electric utility, licensee, or other, as classified in the Commission’s Uniform System of Accounts Prescribed for Public Utilities and Licensees Subject To the Provisions of The Federal Power Act (18 C.F.R. Part 101), must submit FERC Form 1 (18 C.F.R. § 141.1), and FERC Form 3-Q (18 C.F.R. § 141.400).

    Note: Major means having, in each of the three previous calendar years, sales or transmission service that exceeds one of the following:
    1. one million megawatt hours of total annual sales,
    2. 100 megawatt hours of annual sales for resale,
    3. 500 megawatt hours of annual power exchanges delivered, or
    4. 500 megawatt hours of annual wheeling for others (deliveries plus losses).
  3. What and Where to Submit

    1. Submit FERC Forms 1 and 3-Q electronically through the forms submission software. Retain one copy of each report for your files. Any electronic submission must be created by using the forms submission software provided free by the Commission at its web site: http://www.ferc.gov/docs-filing/forms/form-1/elec-subm-soft.asp. The software is used to submit the electronic filing to the Commission via the Internet.
    2. The Corporate Officer Certification must be submitted electronically as part of the FERC Forms 1 and 3-Q filings.
    3. Submit immediately upon publication, by either eFiling or mail, two (2) copies to the Secretary of the Commission, the latest Annual Report to Stockholders. Unless eFiling the Annual Report to Stockholders, mail the stockholders report to the Secretary of the Commission at:
      Secretary
      Federal Energy Regulatory Commission 888 First Street, NE
      Washington, DC 20426
    4. For the CPA Certification Statement, submit within 30 days after filing the FERC Form 1, a letter or report (not applicable to filers classified as Class C or Class D prior to January 1, 1984). The CPA Certification Statement can be either eFiled or mailed to the Secretary of the Commission at the address above.

      The CPA Certification Statement should:
      1. Attest to the conformity, in all material aspects, of the below listed (schedules and pages) with the Commission's applicable Uniform System of Accounts (including applicable notes relating thereto and the Chief Accountant's published accounting releases), and
      2. Be signed by independent certified public accountants or an independent licensed public accountant certified or licensed by a regulatory authority of a State or other political subdivision of the U. S. (See 18 C.F.R. §§ 41.10-41.12 for specific qualifications.)

        Schedules
        Pages
        Comparative Balance Sheet 110-113
        Statement of Income 114-117
        Statement of Retained Earnings 118-119
        Statement of Cash Flows 120-121
        Notes to Financial Statements 122-123
    5. The following format must be used for the CPA Certification Statement unless unusual circumstances or conditions, explained in the letter or report, demand that it be varied. Insert parenthetical phrases only when exceptions are reported.

      “In connection with our regular examination of the financial statements of for the year ended on which we have reported separately under date of , we have also reviewed schedules of FERC Form No. 1 for the year filed with the Federal Energy Regulatory Commission, for conformity in all material respects with the requirements of the Federal Energy Regulatory Commission as set forth in its applicable Uniform System of Accounts and published accounting releases. Our review for this purpose included such tests of the accounting records and such other auditing procedures as we considered necessary in the circumstances.

      Based on our review, in our opinion the accompanying schedules identified in the preceding paragraph (except as noted below) conform in all material respects with the accounting requirements of the Federal Energy Regulatory Commission as set forth in its applicable Uniform System of Accounts and published accounting releases.” The letter or report must state which, if any, of the pages above do not conform to the Commission’s requirements. Describe the discrepancies that exist.
    6. Filers are encouraged to file their Annual Report to Stockholders, and the CPA Certification Statement using eFiling. To further that effort, new selections, “Annual Report to Stockholders,” and “CPA Certification Statement” have been added to the dropdown “pick list” from which companies must choose when eFiling. Further instructions are found on the Commission’s website at http://www.ferc.gov/help/how-to.asp.
    7. Federal, State and Local Governments and other authorized users may obtain additional blank copies of FERC Form 1 and 3-Q free of charge from http://www.ferc.gov/docs-filing/forms/form-1/form-1.pdf and http://www.ferc.gov/docs-filing/forms.asp#3Q-gas .
  4. When to Submit

    FERC Forms 1 and 3-Q must be filed by the following schedule:

    1. FERC Form 1 for each year ending December 31 must be filed by April 18th of the following year (18 CFR § 141.1), and
    2. FERC Form 3-Q for each calendar quarter must be filed within 60 days after the reporting quarter (18 C.F.R. § 141.400).
  5. Where to Send Comments on Public Reporting Burden.

    The public reporting burden for the FERC Form 1 collection of information is estimated to average 1,168 hours per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data-needed, and completing and reviewing the collection of information. The public reporting burden for the FERC Form 3-Q collection of information is estimated to average 168 hours per response.

    Send comments regarding these burden estimates or any aspect of these collections of information, including suggestions for reducing burden, to the Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426 (Attention: Information Clearance Officer); and to the Office of Information and Regulatory Affairs, Office of Management and Budget, Washington, DC 20503 (Attention: Desk Officer for the Federal Energy Regulatory Commission). No person shall be subject to any penalty if any collection of information does not display a valid control number (44 U.S.C. § 3512 (a)).

GENERAL INSTRUCTIONS

  1. Prepare this report in conformity with the Uniform System of Accounts (18 CFR Part 101) (USofA). Interpret all accounting words and phrases in accordance with the USofA.
  2. Enter in whole numbers (dollars or MWH) only, except where otherwise noted. (Enter cents for averages and figures per unit where cents are important. The truncating of cents is allowed except on the four basic financial statements where rounding is required.) The amounts shown on all supporting pages must agree with the amounts entered on the statements that they support. When applying thresholds to determine significance for reporting purposes, use for balance sheet accounts the balances at the end of the current reporting period, and use for statement of income accounts the current year's year to date amounts.
  3. Complete each question fully and accurately, even if it has been answered in a previous report. Enter the word "None" where it truly and completely states the fact.
  4. For any page(s) that is not applicable to the respondent, omit the page(s) and enter "NA," "NONE," or "Not Applicable" in column (d) on the List of Schedules, pages 2 and 3.
  5. Enter the month, day, and year for all dates. Use customary abbreviations. The "Date of Report" included in the header of each page is to be completed only for resubmissions (see VII. below).
  6. Generally, except for certain schedules, all numbers, whether they are expected to be debits or credits, must be reported as positive. Numbers having a sign that is different from the expected sign must be reported by enclosing the numbers in parentheses.
  7. For any resubmissions, submit the electronic filing using the form submission software only. Please explain the reason for the resubmission in a footnote to the data field.
  8. Do not make references to reports of previous periods/years or to other reports in lieu of required entries, except as specifically authorized.
  9. Wherever (schedule) pages refer to figures from a previous period/year, the figures reported must be based upon those shown by the report of the previous period/year, or an appropriate explanation given as to why the different figures were used.
Definitions for statistical classifications used for completing schedules for transmission system reporting are as follows:

FNS - Firm Network Transmission Service for Self. "Firm" means service that can not be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Network Service" is Network Transmission Service as described in Order No. 888 and the Open Access Transmission Tariff. "Self" means the respondent.

FNO - Firm Network Service for Others. "Firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Network Service" is Network Transmission Service as described in Order No. 888 and the Open Access Transmission Tariff.

LFP - for Long-Term Firm Point-to-Point Transmission Reservations. "Long-Term" means one year or longer and” firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Point-to-Point Transmission Reservations" are described in Order No. 888 and the Open Access Transmission Tariff. For all transactions identified as LFP, provide in a footnote the termination date of the contract defined as the earliest date either buyer or seller can unilaterally cancel the contract.

OLF - Other Long-Term Firm Transmission Service. Report service provided under contracts which do not conform to the terms of the Open Access Transmission Tariff. "Long-Term" means one year or longer and “firm” means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. For all transactions identified as OLF, provide in a footnote the termination date of the contract defined as the earliest date either buyer or seller can unilaterally get out of the contract.

SFP - Short-Term Firm Point-to-Point Transmission Reservations. Use this classification for all firm point-to-point transmission reservations, where the duration of each period of reservation is less than one-year.

NF - Non-Firm Transmission Service, where firm means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions.

OS - Other Transmission Service. Use this classification only for those services which can not be placed in the above-mentioned classifications, such as all other service regardless of the length of the contract and service FERC Form. Describe the type of service in a footnote for each entry.

AD - Out-of-Period Adjustments. Use this code for any accounting adjustments or "true-ups" for service provided in prior reporting periods. Provide an explanation in a footnote for each adjustment.

DEFINITIONS
  1. Commission Authorization (Comm. Auth.) -- The authorization of the Federal Energy Regulatory Commission, or any other Commission. Name the commission whose authorization was obtained and give date of the authorization.
  2. Respondent -- The person, corporation, licensee, agency, authority, or other Legal entity or instrumentality in whose behalf the report is made.

EXCERPTS FROM THE LAW

Federal Power Act, 16 U.S.C. § 791a-825r

Sec. 3. The words defined in this section shall have the following meanings for purposes of this Act, to with:

  1. ’Corporation' means any corporation, joint-stock company, partnership, association, business trust, organized group of persons, whether incorporated or not, or a receiver or receivers, trustee or trustees of any of the foregoing. It shall not include 'municipalities, as hereinafter defined;
  2. 'Person' means an individual or a corporation;
  3. 'Licensee, means any person, State, or municipality Licensed under the provisions of section 4 of this Act, and any assignee or successor in interest thereof;
  1. 'municipality means a city, county, irrigation district, drainage district, or other political subdivision or agency of a State competent under the Laws thereof to carry and the business of developing, transmitting, unitizing, or distributing power; ......
  1. "project' means. a complete unit of improvement or development, consisting of a power house, all water conduits, all dams and appurtenant works and structures (including navigation structures) which are a part of said unit, and all storage, diverting, or fore bay reservoirs directly connected therewith, the primary line or lines transmitting power there from to the point of junction with the distribution system or with the interconnected primary transmission system, all miscellaneous structures used and useful in connection with said unit or any part thereof, and all water rights, rights-of-way, ditches, dams, reservoirs, Lands, or interest in Lands the use and occupancy of which are necessary or appropriate in the maintenance and operation of such unit;

"Sec. 4. The Commission is hereby authorized and empowered
  1. 'To make investigations and to collect and record data concerning the utilization of the water 'resources of any region to be developed, the water-power industry and its relation to other industries and to interstate or foreign commerce, and concerning the location, capacity, development -costs, and relation to markets of power sites; ... to the extent the Commission may deem necessary or useful for the purposes of this Act."

"Sec. 304.
  1. Every Licensee and every public utility shall file with the Commission such annual and other periodic or special* reports as the Commission may be rules and regulations or other prescribe as necessary or appropriate to assist the Commission in the -proper administration of this Act. The Commission may prescribe the manner and FERC Form in which such reports salt be made, and require from such persons specific answers to all questions upon which the Commission may need information. The Commission may require that such reports shall include, among other things, full information as to assets and Liabilities, capitalization, net investment, and reduction thereof, gross receipts, interest due and paid, depreciation, and other reserves, cost of project and other facilities, cost of maintenance and operation of the project and other facilities, cost of renewals and replacement of the project works and other facilities, depreciation, generation, transmission, distribution, delivery, use, and sale of electric energy. The Commission may require any such person to make adequate provision for currently determining such costs and other facts. Such reports shall be made under oath unless the Commission otherwise specifies*.10
"Sec. 309.
  1. The Commission shall have power to perform any and all acts, and to prescribe, issue, make, and rescind such orders, rules and regulations as it may find necessary or appropriate to carry out the provisions of this Act. Among other things, such rules and regulations may define accounting, technical, and trade terms used in this Act; and may prescribe the FERC Form or FERC Forms of all statements, declarations, applications, and reports to be filed with the Commission, the information which they shall contain, and the time within which they shall be field..."

GENERAL PENALTIES

The Commission may assess up to $1 million per day per violation of its rules and regulations. See FPA § 316(a) (2005), 16 U.S.C. § 825o(a).


FERC FORM NO.
1/3-Q

REPORT OF MAJOR ELECTRIC UTILITIES, LICENSEES AND OTHER
Identification
01 Exact Legal Name of Respondent

NorthWestern Corporation
02 Year/ Period of Report


End of:
2021
/
Q3
03 Previous Name and Date of Change (If name changed during year)

/
04 Address of Principal Office at End of Period (Street, City, State, Zip Code)

3010 West 69th StreetSioux Falls, SD 57108
05 Name of Contact Person

Elaine A. Vesco
06 Title of Contact Person

Assistant Controller
07 Address of Contact Person (Street, City, State, Zip Code)

11 East Park Street, Butte, MT 59701
08 Telephone of Contact Person, Including Area Code

(406) 497-2759
09 This Report is An Original / A Resubmission

(1)
An Original

(2)
A Resubmission
10 Date of Report (Mo, Da, Yr)

09/30/2021
Quarterly Corporate Officer Certification
The undersigned officer certifies that:

I have examined this report and to the best of my knowledge, information, and belief all statements of fact contained in this report are correct statements of the business affairs of the respondent and the financial statements, and other financial information contained in this report, conform in all material respects to the Uniform System of Accounts.

01 Name

Jeff Berzina
02 Title

Controller
03 Signature

Jeff Berzina
04 Date Signed (Mo, Da, Yr)

11/29/2021
Title 18, U.S.C. 1001 makes it a crime for any person to knowingly and willingly to make to any Agency or Department of the United States any false, fictitious or fraudulent statements as to any matter within its jurisdiction.


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
List of Schedules

Enter in column (c) the terms "none," "not applicable," or "NA," as appropriate, where no information or amounts have been reported for certain pages. Omit pages where the respondents are "none," "not applicable," or "NA".

Line No.
Title of Schedule
(a)
Reference Page No.
(b)
Remarks
(c)
ScheduleIdentificationAbstract
Identification
1
ScheduleListOfSchedulesAbstract
List of Schedules (Electric Utility)
2
1
ScheduleImportantChangesDuringTheQuarterYearAbstract
Important Changes During the Quarter
108
2
ScheduleComparativeBalanceSheetAbstract
Comparative Balance Sheet
110
3
ScheduleStatementOfIncomeAbstract
Statement of Income for the Quarter
114
4
ScheduleRetainedEarningsAbstract
Statement of Retained Earnings for the Quarter
118
5
ScheduleStatementOfCashFlowsAbstract
Statement of Cash Flows
120
6
ScheduleNotesToFinancialStatementsAbstract
Notes to Financial Statements
122
7
ScheduleStatementOfAccumulatedOtherComprehensiveIncomeAndHedgingActivitiesAbstract
Statement of Accum Comp Income, Comp Income, and Hedging Activities
122a
8
ScheduleSummaryOfUtilityPlantAndAccumulatedProvisionsForDepreciationAmortizationAndDepletionAbstract
Summary of Utility Plant & Accumulated Provisions for Dep, Amort & Dep
200
9
ScheduleElectricPlantInServiceAndAccumulatedProvisionForDepreciationByFunctionAbstract
Electric Plant In Service and Accum Provision For Depr by Function
208
10
ScheduleTransmissionServiceAndGenerationInterconnectionStudyCostsAbstract
Transmission Service and Generation Interconnection Study Costs
231
11
ScheduleOtherRegulatoryAssetsAbstract
Other Regulatory Assets
232
12
ScheduleOtherRegulatoryLiabilitiesAbstract
Other Regulatory Liabilities
278
13
ScheduleElectricOperatingRevenuesAbstract
Elec Operating Revenues (Individual Schedule Lines 300-301)
300
14
ScheduleRegionalTransmissionServiceRevenuesAbstract
Regional Transmission Service Revenues (Account 457.1)
302
Not Applicable
15
ScheduleElectricProductionOtherPowerTransmissionRegionalExpensesAbstract
Electric Prod, Other Power Supply Exp, Trans and Distrib Exp
324
16
ScheduleElectricCustomerAccountServiceSalesAdministrativeAndGeneralExpensesAbstract
Electric Customer Accts, Service, Sales, Admin and General Expenses
325
17
ScheduleTransmissionOfElectricityForOthersAbstract
Transmission of Electricity for Others
328
18
ScheduleTransmissionOfElectricityByIsoOrRtoAbstract
Transmission of Electricity by ISO/RTOs
331
Not Applicable
19
ScheduleTransmissionOfElectricityByOthersAbstract
Transmission of Electricity by Others
332
20
ScheduleDepreciationDepletionAndAmortizationsAbstract
Deprec, Depl and Amort of Elec Plant (403,403.1,404,and 405) (except Amortization of Acquisition Adjustments)
338
21
ScheduleAmountsIncludedInIsoOrRtoSettlementAbstract
Amounts Included in ISO/RTO Settlement Statements
397
22
ScheduleMonthlyPeaksAndOutputAbstract
Monthly Peak Loads and Energy Output
399
23
ScheduleMonthlyTransmissionSystemPeakLoadAbstract
Monthly Transmission System Peak Load
400
24
ScheduleMonthlyIsoOrRtoTransmissionSystemPeakLoadAbstract
Monthly ISO/RTO Transmission System Peak Load
400a


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
IMPORTANT CHANGES DURING THE QUARTER/YEAR

Give particulars (details) concerning the matters indicated below. Make the statements explicit and precise, and number them in accordance with the inquiries. Each inquiry should be answered. Enter "none," "not applicable," or "NA" where applicable. If information which answers an inquiry is given elsewhere in the report, make a reference to the schedule in which it appears.

  1. Changes in and important additions to franchise rights: Describe the actual consideration given therefore and state from whom the franchise rights were acquired. If acquired without the payment of consideration, state that fact.
  2. Acquisition of ownership in other companies by reorganization, merger, or consolidation with other companies: Give names of companies involved, particulars concerning the transactions, name of the Commission authorizing the transaction, and reference to Commission authorization.
  3. Purchase or sale of an operating unit or system: Give a brief description of the property, and of the transactions relating thereto, and reference to Commission authorization, if any was required. Give date journal entries called for by the Uniform System of Accounts were submitted to the Commission.
  4. Important leaseholds (other than leaseholds for natural gas lands) that have been acquired or given, assigned or surrendered: Give effective dates, lengths of terms, names of parties, rents, and other condition. State name of Commission authorizing lease and give reference to such authorization.
  5. Important extension or reduction of transmission or distribution system: State territory added or relinquished and date operations began or ceased and give reference to Commission authorization, if any was required. State also the approximate number of customers added or lost and approximate annual revenues of each class of service. Each natural gas company must also state major new continuing sources of gas made available to it from purchases, development, purchase contract or otherwise, giving location and approximate total gas volumes available, period of contracts, and other parties to any such arrangements, etc.
  6. Obligations incurred as a result of issuance of securities or assumption of liabilities or guarantees including issuance of short-term debt and commercial paper having a maturity of one year or less. Give reference to FERC or State Commission authorization, as appropriate, and the amount of obligation or guarantee.
  7. Changes in articles of incorporation or amendments to charter: Explain the nature and purpose of such changes or amendments.
  8. State the estimated annual effect and nature of any important wage scale changes during the year.
  9. State briefly the status of any materially important legal proceedings pending at the end of the year, and the results of any such proceedings culminated during the year.
  10. Describe briefly any materially important transactions of the respondent not disclosed elsewhere in this report in which an officer, director, security holder reported on Page 104 or 105 of the Annual Report Form No. 1, voting trustee, associated company or known associate of any of these persons was a party or in which any such person had a material interest.
  11. (Reserved.)
  12. If the important changes during the year relating to the respondent company appearing in the annual report to stockholders are applicable in every respect and furnish the data required by Instructions 1 to 11 above, such notes may be included on this page.
  13. Describe fully any changes in officers, directors, major security holders and voting powers of the respondent that may have occurred during the reporting period.
  14. In the event that the respondent participates in a cash management program(s) and its proprietary capital ratio is less than 30 percent please describe the significant events or transactions causing the proprietary capital ratio to be less than 30 percent, and the extent to which the respondent has amounts loaned or money advanced to its parent, subsidiary, or affiliated companies through a cash management program(s). Additionally, please describe plans, if any to regain at least a 30 percent proprietary ratio.
1. None
2. None
3. None
4. None
5. None
6. See Note 6, "Financing Activities", FERC Order ES19-36-000 and MPSC Order Number 7691 Docket Number D2019.08.046.
7. None
8. None
9. See Note 8, "Commitments and Contingencies".
10. None
12. None
13. None.
14. NA


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
COMPARATIVE BALANCE SHEET (ASSETS AND OTHER DEBITS)
Line No.
Title of Account
(a)
Ref. Page No.
(b)
Current Year End of Quarter/Year Balance
(c)
Prior Year End Balance 12/31
(d)
1
UtilityPlantAbstract
UTILITY PLANT
2
UtilityPlant
Utility Plant (101-106, 114)
200
6,937,449,682
6,797,205,052
3
ConstructionWorkInProgress
Construction Work in Progress (107)
200
332,964,376
166,454,010
4
UtilityPlantAndConstructionWorkInProgress
TOTAL Utility Plant (Enter Total of lines 2 and 3)
7,270,414,058
6,963,659,062
5
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
(Less) Accum. Prov. for Depr. Amort. Depl. (108, 110, 111, 115)
200
2,639,723,924
2,527,092,610
6
UtilityPlantNet
Net Utility Plant (Enter Total of line 4 less 5)
4,630,690,134
4,436,566,452
7
NuclearFuelInProcessOfRefinementConversionEnrichmentAndFabrication
Nuclear Fuel in Process of Ref., Conv., Enrich., and Fab. (120.1)
202
8
NuclearFuelMaterialsAndAssembliesStockAccountMajorOnly
Nuclear Fuel Materials and Assemblies-Stock Account (120.2)
9
NuclearFuelAssembliesInReactorMajorOnly
Nuclear Fuel Assemblies in Reactor (120.3)
10
SpentNuclearFuelMajorOnly
Spent Nuclear Fuel (120.4)
11
NuclearFuelUnderCapitalLeases
Nuclear Fuel Under Capital Leases (120.6)
12
AccumulatedProvisionForAmortizationOfNuclearFuelAssemblies
(Less) Accum. Prov. for Amort. of Nucl. Fuel Assemblies (120.5)
202
13
NuclearFuelNet
Net Nuclear Fuel (Enter Total of lines 7-11 less 12)
14
UtilityPlantAndNuclearFuelNet
Net Utility Plant (Enter Total of lines 6 and 13)
4,630,690,134
4,436,566,452
15
OtherElectricPlantAdjustments
Utility Plant Adjustments (116)
357,585,527
357,585,527
16
GasStoredUndergroundNoncurrent
Gas Stored Underground - Noncurrent (117)
36,195,392
36,196,864
17
OtherPropertyAndInvestmentsAbstract
OTHER PROPERTY AND INVESTMENTS
18
NonutilityProperty
Nonutility Property (121)
686,805
686,805
19
AccumulatedProvisionForDepreciationAndAmortizationOfNonutilityProperty
(Less) Accum. Prov. for Depr. and Amort. (122)
29,270
29,180
20
InvestmentInAssociatedCompanies
Investments in Associated Companies (123)
21
InvestmentInSubsidiaryCompanies
Investment in Subsidiary Companies (123.1)
224
23,857,159
23,732,943
23
NoncurrentPortionOfAllowances
Noncurrent Portion of Allowances
228
24
OtherInvestments
Other Investments (124)
18,105,673
45,234,617
25
SinkingFunds
Sinking Funds (125)
26
DepreciationFund
Depreciation Fund (126)
27
AmortizationFundFederal
Amortization Fund - Federal (127)
28
OtherSpecialFunds
Other Special Funds (128)
250,000
29
SpecialFunds
Special Funds (Non Major Only) (129)
30
DerivativeInstrumentAssetsLongTerm
Long-Term Portion of Derivative Assets (175)
31
DerivativeInstrumentAssetsHedgesLongTerm
Long-Term Portion of Derivative Assets - Hedges (176)
32
OtherPropertyAndInvestments
TOTAL Other Property and Investments (Lines 18-21 and 23-31)
42,620,367
69,875,185
33
CurrentAndAccruedAssetsAbstract
CURRENT AND ACCRUED ASSETS
34
CashAndWorkingFunds
Cash and Working Funds (Non-major Only) (130)
35
Cash
Cash (131)
7,118,962
5,454,203
36
SpecialDeposits
Special Deposits (132-134)
14,354,954
9,670,293
37
WorkingFunds
Working Fund (135)
22,950
22,950
38
TemporaryCashInvestments
Temporary Cash Investments (136)
39
NotesReceivable
Notes Receivable (141)
40
CustomerAccountsReceivable
Customer Accounts Receivable (142)
67,018,811
73,728,730
41
OtherAccountsReceivable
Other Accounts Receivable (143)
9,418,599
14,106,165
42
AccumulatedProvisionForUncollectibleAccountsCredit
(Less) Accum. Prov. for Uncollectible Acct.-Credit (144)
2,279,229
5,609,532
43
NotesReceivableFromAssociatedCompanies
Notes Receivable from Associated Companies (145)
44
AccountsReceivableFromAssociatedCompanies
Accounts Receivable from Assoc. Companies (146)
3,375,189
1,752,345
45
FuelStock
Fuel Stock (151)
227
5,907,131
6,561,463
46
FuelStockExpensesUndistributed
Fuel Stock Expenses Undistributed (152)
227
47
Residuals
Residuals (Elec) and Extracted Products (153)
227
48
PlantMaterialsAndOperatingSupplies
Plant Materials and Operating Supplies (154)
227
51,042,815
43,691,819
49
Merchandise
Merchandise (155)
227
50
OtherMaterialsAndSupplies
Other Materials and Supplies (156)
227
51
NuclearMaterialsHeldForSale
Nuclear Materials Held for Sale (157)
202/227
52
AllowanceInventoryAndWithheld
Allowances (158.1 and 158.2)
228
53
NoncurrentPortionOfAllowances
(Less) Noncurrent Portion of Allowances
228
54
StoresExpenseUndistributed
Stores Expense Undistributed (163)
227
55
GasStoredCurrent
Gas Stored Underground - Current (164.1)
26,716,542
10,010,097
56
LiquefiedNaturalGasStoredAndHeldForProcessing
Liquefied Natural Gas Stored and Held for Processing (164.2-164.3)
57
Prepayments
Prepayments (165)
(a)
22,756,605
15,375,451
58
AdvancesForGas
Advances for Gas (166-167)
59
InterestAndDividendsReceivable
Interest and Dividends Receivable (171)
60
RentsReceivable
Rents Receivable (172)
45,653
49,263
61
AccruedUtilityRevenues
Accrued Utility Revenues (173)
58,184,117
80,492,128
62
MiscellaneousCurrentAndAccruedAssets
Miscellaneous Current and Accrued Assets (174)
201,402
194,031
63
DerivativeInstrumentAssets
Derivative Instrument Assets (175)
64
DerivativeInstrumentAssetsLongTerm
(Less) Long-Term Portion of Derivative Instrument Assets (175)
65
DerivativeInstrumentAssetsHedges
Derivative Instrument Assets - Hedges (176)
66
DerivativeInstrumentAssetsHedgesLongTerm
(Less) Long-Term Portion of Derivative Instrument Assets - Hedges (176)
67
CurrentAndAccruedAssets
Total Current and Accrued Assets (Lines 34 through 66)
263,481,697
255,499,406
68
DeferredDebitsAbstract
DEFERRED DEBITS
69
UnamortizedDebtExpense
Unamortized Debt Expenses (181)
11,503,550
13,376,263
70
ExtraordinaryPropertyLosses
Extraordinary Property Losses (182.1)
230a
71
UnrecoveredPlantAndRegulatoryStudyCosts
Unrecovered Plant and Regulatory Study Costs (182.2)
230b
72
OtherRegulatoryAssets
Other Regulatory Assets (182.3)
232
721,337,952
712,384,890
73
PreliminarySurveyAndInvestigationCharges
Prelim. Survey and Investigation Charges (Electric) (183)
2,286,180
74
PreliminaryNaturalGasSurveyAndInvestigationChargesAndOtherPreliminarySurveyAndInvestigationCharges
Preliminary Natural Gas Survey and Investigation Charges 183.1)
75
OtherPreliminarySurveyAndInvestigationCharges
Other Preliminary Survey and Investigation Charges (183.2)
76
ClearingAccounts
Clearing Accounts (184)
3,731
3,634
77
TemporaryFacilities
Temporary Facilities (185)
78
MiscellaneousDeferredDebits
Miscellaneous Deferred Debits (186)
233
8,748,006
7,542,918
79
DeferredLossesFromDispositionOfUtilityPlant
Def. Losses from Disposition of Utility Plt. (187)
80
ResearchDevelopmentAndDemonstrationExpenditures
Research, Devel. and Demonstration Expend. (188)
352
81
UnamortizedLossOnReacquiredDebt
Unamortized Loss on Reaquired Debt (189)
(b)
26,396,490
28,350,312
82
AccumulatedDeferredIncomeTaxes
Accumulated Deferred Income Taxes (190)
234
168,780,005
170,834,539
83
UnrecoveredPurchasedGasCosts
Unrecovered Purchased Gas Costs (191)
90,536,374
5,905,571
84
DeferredDebits
Total Deferred Debits (lines 69 through 83)
1,027,306,108
940,684,307
85
AssetsAndOtherDebits
TOTAL ASSETS (lines 14-16, 32, 67, and 84)
6,357,879,225
6,096,407,741


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: Prepayments
South Dakota Operations Prepayments (165) are $16,418,072 and $12,840,333 for 2021 and 2020, respectively.

Montana Operations Prepayments (165) are $6,338,533 and $2,535,118 for 2021 and 2020, respectively.
(b) Concept: UnamortizedLossOnReacquiredDebt
Montana Operations Unamortized Loss on Reacquired Debt (189) is $23,051,761 and $24,241,258 for 2021 and 2020, respectively.

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
COMPARATIVE BALANCE SHEET (LIABILITIES AND OTHER CREDITS)
Line No.
Title of Account
(a)
Ref. Page No.
(b)
Current Year End of Quarter/Year Balance
(c)
Prior Year End Balance 12/31
(d)
1
ProprietaryCapitalAbstract
PROPRIETARY CAPITAL
2
CommonStockIssued
Common Stock Issued (201)
250
561,577
541,448
3
PreferredStockIssued
Preferred Stock Issued (204)
250
4
CapitalStockSubscribed
Capital Stock Subscribed (202, 205)
5
StockLiabilityForConversion
Stock Liability for Conversion (203, 206)
6
PremiumOnCapitalStock
Premium on Capital Stock (207)
7
OtherPaidInCapital
Other Paid-In Capital (208-211)
253
1,641,389,752
1,513,785,477
8
InstallmentsReceivedOnCapitalStock
Installments Received on Capital Stock (212)
252
9
DiscountOnCapitalStock
(Less) Discount on Capital Stock (213)
254
10
CapitalStockExpense
(Less) Capital Stock Expense (214)
254b
11
RetainedEarnings
Retained Earnings (215, 215.1, 216)
118
707,532,155
666,673,846
12
UnappropriatedUndistributedSubsidiaryEarnings
Unappropriated Undistributed Subsidiary Earnings (216.1)
118
791,902
1,295,383
13
ReacquiredCapitalStock
(Less) Reaquired Capital Stock (217)
250
98,423,508
98,075,421
14
NoncorporateProprietorship
Noncorporate Proprietorship (Non-major only) (218)
15
AccumulatedOtherComprehensiveIncome
Accumulated Other Comprehensive Income (219)
122(a)(b)
5,319,302
5,126,145
16
ProprietaryCapital
Total Proprietary Capital (lines 2 through 15)
2,246,532,576
2,079,094,588
17
LongTermDebtAbstract
LONG-TERM DEBT
18
Bonds
Bonds (221)
256
2,179,660,000
2,079,660,000
19
ReacquiredBonds
(Less) Reaquired Bonds (222)
256
20
AdvancesFromAssociatedCompanies
Advances from Associated Companies (223)
256
21
OtherLongTermDebt
Other Long-Term Debt (224)
256
295,000,000
248,976,900
22
UnamortizedPremiumOnLongTermDebt
Unamortized Premium on Long-Term Debt (225)
23
UnamortizedDiscountOnLongTermDebtDebit
(Less) Unamortized Discount on Long-Term Debt-Debit (226)
68,472
24
LongTermDebt
Total Long-Term Debt (lines 18 through 23)
2,474,591,528
2,328,636,900
25
OtherNoncurrentLiabilitiesAbstract
OTHER NONCURRENT LIABILITIES
26
ObligationsUnderCapitalLeaseNoncurrent
Obligations Under Capital Leases - Noncurrent (227)
13,707,650
16,379,639
27
AccumulatedProvisionForPropertyInsurance
Accumulated Provision for Property Insurance (228.1)
28
AccumulatedProvisionForInjuriesAndDamages
Accumulated Provision for Injuries and Damages (228.2)
(a)
7,292,871
6,050,644
29
AccumulatedProvisionForPensionsAndBenefits
Accumulated Provision for Pensions and Benefits (228.3)
(b)
7,554,864
10,240,902
30
AccumulatedMiscellaneousOperatingProvisions
Accumulated Miscellaneous Operating Provisions (228.4)
90,651,322
106,746,764
31
AccumulatedProvisionForRateRefunds
Accumulated Provision for Rate Refunds (229)
10,712,124
32
LongTermPortionOfDerivativeInstrumentLiabilities
Long-Term Portion of Derivative Instrument Liabilities
33
LongTermPortionOfDerivativeInstrumentLiabilitiesHedges
Long-Term Portion of Derivative Instrument Liabilities - Hedges
34
AssetRetirementObligations
Asset Retirement Obligations (230)
44,622,599
45,355,157
35
OtherNoncurrentLiabilities
Total Other Noncurrent Liabilities (lines 26 through 34)
163,829,306
195,485,230
36
CurrentAndAccruedLiabilitiesAbstract
CURRENT AND ACCRUED LIABILITIES
37
NotesPayable
Notes Payable (231)
100,000,000
38
AccountsPayable
Accounts Payable (232)
97,004,074
104,724,988
39
NotesPayableToAssociatedCompanies
Notes Payable to Associated Companies (233)
40
AccountsPayableToAssociatedCompanies
Accounts Payable to Associated Companies (234)
3,853,831
3,622,020
41
CustomerDeposits
Customer Deposits (235)
6,343,923
6,000,316
42
TaxesAccrued
Taxes Accrued (236)
262
130,744,369
84,528,451
43
InterestAccrued
Interest Accrued (237)
26,324,304
18,073,738
44
DividendsDeclared
Dividends Declared (238)
45
MaturedLongTermDebt
Matured Long-Term Debt (239)
46
MaturedInterest
Matured Interest (240)
47
TaxCollectionsPayable
Tax Collections Payable (241)
1,264,491
1,432,362
48
MiscellaneousCurrentAndAccruedLiabilities
Miscellaneous Current and Accrued Liabilities (242)
(c)
65,896,292
75,300,662
49
ObligationsUnderCapitalLeasesCurrent
Obligations Under Capital Leases-Current (243)
4,071,671
3,912,103
50
DerivativesInstrumentLiabilities
Derivative Instrument Liabilities (244)
51
LongTermPortionOfDerivativeInstrumentLiabilities
(Less) Long-Term Portion of Derivative Instrument Liabilities
52
DerivativeInstrumentLiabilitiesHedges
Derivative Instrument Liabilities - Hedges (245)
53
LongTermPortionOfDerivativeInstrumentLiabilitiesHedges
(Less) Long-Term Portion of Derivative Instrument Liabilities-Hedges
54
CurrentAndAccruedLiabilities
Total Current and Accrued Liabilities (lines 37 through 53)
335,502,955
397,594,640
55
DeferredCreditsAbstract
DEFERRED CREDITS
56
CustomerAdvancesForConstruction
Customer Advances for Construction (252)
(d)
79,550,179
65,186,426
57
AccumulatedDeferredInvestmentTaxCredits
Accumulated Deferred Investment Tax Credits (255)
266
278,470
278,674
58
DeferredGainsFromDispositionOfUtilityPlant
Deferred Gains from Disposition of Utility Plant (256)
59
OtherDeferredCredits
Other Deferred Credits (253)
269
219,199,423
199,645,159
60
OtherRegulatoryLiabilities
Other Regulatory Liabilities (254)
278
180,257,489
187,832,431
61
UnamortizedGainOnReacquiredDebt
Unamortized Gain on Reaquired Debt (257)
62
AccumulatedDeferredIncomeTaxesAcceleratedAmortizationProperty
Accum. Deferred Income Taxes-Accel. Amort.(281)
272
63
AccumulatedDeferredIncomeTaxesOtherProperty
Accum. Deferred Income Taxes-Other Property (282)
425,837,677
416,897,664
64
AccumulatedDeferredIncomeTaxesOther
Accum. Deferred Income Taxes-Other (283)
232,299,622
225,756,029
65
DeferredCredits
Total Deferred Credits (lines 56 through 64)
1,137,422,860
1,095,596,383
66
LiabilitiesAndOtherCredits
TOTAL LIABILITIES AND STOCKHOLDER EQUITY (lines 16, 24, 35, 54 and 65)
6,357,879,225
6,096,407,741


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: AccumulatedProvisionForInjuriesAndDamages
South Dakota Operations Provision for Injuries and Damages (228.2) are $751,210 and $581,272 for 2021 and 2020, respectively.

Montana Operations Provision for Injuries and Damages (228.2) are $6,541,661 and $5,469,372 for 2021 and 2020, respectively.
(b) Concept: AccumulatedProvisionForPensionsAndBenefits
Montana Operations Accumulated Provision for Pensions and Benefits (228.3) are $4,284,855 and $7,096,957 for 2021 and 2020, respectively.
(c) Concept: MiscellaneousCurrentAndAccruedLiabilities
Montana Operations Miscellaneous Current and Accrued Liabilities (242) are $50,253,832 and $60,393,837 for 2021 and 2020, respectively.
(d) Concept: CustomerAdvancesForConstruction
Montana Operations Customer Advances for Construction (252) are $79,550,179 and $65,186,426 for 2021 and 2020, respectively.

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
STATEMENT OF INCOME

Quarterly

  1. Report in column (c) the current year to date balance. Column (c) equals the total of adding the data in column (g) plus the data in column (i) plus the data in column (k). Report in column (d) similar data for the previous year. This information is reported in the annual filing only.
  2. Enter in column (e) the balance for the reporting quarter and in column (f) the balance for the same three month period for the prior year.
  3. Report in column (g) the quarter to date amounts for electric utility function; in column (i) the quarter to date amounts for gas utility, and in column (k) the quarter to date amounts for other utility function for the current year quarter.
  4. Report in column (h) the quarter to date amounts for electric utility function; in column (j) the quarter to date amounts for gas utility, and in column (l) the quarter to date amounts for other utility function for the prior year quarter.
  5. If additional columns are needed, place them in a footnote.

Annual or Quarterly if applicable

  1. Do not report fourth quarter data in columns (e) and (f)
  2. Report amounts for accounts 412 and 413, Revenues and Expenses from Utility Plant Leased to Others, in another utility columnin a similar manner to a utility department. Spread the amount(s) over lines 2 thru 26 as appropriate. Include these amounts in columns (c) and (d) totals.
  3. Report amounts in account 414, Other Utility Operating Income, in the same manner as accounts 412 and 413 above.
  4. Use page 122 for important notes regarding the statement of income for any account thereof.
  5. Give concise explanations concerning unsettled rate proceedings where a contingency exists such that refunds of a material amount may need to be made to the utility's customers or which may result in material refund to the utility with respect to power or gas purchases. State for each year effected the gross revenues or costs to which the contingency relates and the tax effects together with an explanation of the major factors which affect the rights of the utility to retain such revenues or recover amounts paid with respect to power or gas purchases.
  6. Give concise explanations concerning significant amounts of any refunds made or received during the year resulting from settlement of any rate proceeding affecting revenues received or costs incurred for power or gas purches, and a summary of the adjustments made to balance sheet, income, and expense accounts.
  7. If any notes appearing in the report to stokholders are applicable to the Statement of Income, such notes may be included at page 122.
  8. Enter on page 122 a concise explanation of only those changes in accounting methods made during the year which had an effect on net income, including the basis of allocations and apportionments from those used in the preceding year. Also, give the appropriate dollar effect of such changes.
  9. Explain in a footnote if the previous year's/quarter's figures are different from that reported in prior reports.
  10. If the columns are insufficient for reporting additional utility departments, supply the appropriate account titles report the information in a footnote to this schedule.
Line No.
Title of Account
(a)
(Ref.) Page No.
(b)
Total Current Year to Date Balance for Quarter/Year
(c)
Total Prior Year to Date Balance for Quarter/Year
(d)
Current 3 Months Ended - Quarterly Only - No 4th Quarter
(e)
Prior 3 Months Ended - Quarterly Only - No 4th Quarter
(f)
Electric Utility Current Year to Date (in dollars)
(g)
Electric Utility Previous Year to Date (in dollars)
(h)
Gas Utiity Current Year to Date (in dollars)
(i)
Gas Utility Previous Year to Date (in dollars)
(j)
Other Utility Current Year to Date (in dollars)
(k)
Other Utility Previous Year to Date (in dollars)
(l)
1
UtilityOperatingIncomeAbstract
UTILITY OPERATING INCOME
2
OperatingRevenues
Operating Revenues (400)
300
1,004,267,538
905,537,852
320,010,831
282,729,598
797,837,304
734,280,569
205,928,796
170,701,322
501,438
555,961
3
OperatingExpensesAbstract
Operating Expenses
4
OperationExpense
Operation Expenses (401)
320
472,649,548
438,427,866
154,464,055
136,894,449
347,400,562
340,476,109
124,860,685
97,479,229
388,301
472,528
5
MaintenanceExpense
Maintenance Expenses (402)
320
39,300,425
36,133,573
13,537,093
12,292,456
34,246,467
31,460,051
4,987,464
4,629,823
66,494
43,699
6
DepreciationExpense
Depreciation Expense (403)
336
119,645,835
113,401,937
39,847,645
37,327,008
99,030,557
94,005,234
20,584,750
19,366,175
30,528
30,528
7
DepreciationExpenseForAssetRetirementCosts
Depreciation Expense for Asset Retirement Costs (403.1)
336
8
AmortizationAndDepletionOfUtilityPlant
Amort. & Depl. of Utility Plant (404-405)
336
9,595,731
9,276,436
3,379,079
3,075,457
4,863,963
4,725,106
4,731,768
4,551,330
9
AmortizationOfElectricPlantAcquisitionAdjustments
Amort. of Utility Plant Acq. Adj. (406)
336
11,326,329
11,326,329
3,775,443
3,775,443
11,961,208
11,961,208
634,879
634,879
10
AmortizationOfPropertyLossesUnrecoveredPlantAndRegulatoryStudyCosts
Amort. Property Losses, Unrecov Plant and Regulatory Study Costs (407)
11
AmortizationOfConversionExpenses
Amort. of Conversion Expenses (407.2)
12
RegulatoryDebits
Regulatory Debits (407.3)
12,645,324
2,930,062
3,850,596
838,656
10,271,265
1,255,048
2,374,059
1,675,014
13
RegulatoryCredits
(Less) Regulatory Credits (407.4)
10,033,053
15,716,354
3,724,099
7,382,631
7,702,363
10,867,247
2,330,690
4,849,107
14
TaxesOtherThanIncomeTaxesUtilityOperatingIncome
Taxes Other Than Income Taxes (408.1)
262
144,942,100
143,314,290
45,651,701
47,250,942
112,897,491
111,853,215
31,995,119
31,413,108
49,490
47,967
15
IncomeTaxesOperatingIncome
Income Taxes - Federal (409.1)
262
6,193,312
8,532,150
12,152,116
2,832,246
2,239,172
8,532,150
3,958,074
3,934
16
IncomeTaxesUtilityOperatingIncomeOther
Income Taxes - Other (409.1)
262
6,812,658
4,720,661
4,425,505
2,388,509
1,356
17
ProvisionsForDeferredIncomeTaxesUtilityOperatingIncome
Provision for Deferred Income Taxes (410.1)
234, 272
59,784,624
84,055,709
12,598,925
35,216,539
44,216,213
62,688,480
15,571,842
21,377,251
3,431
10,022
18
ProvisionForDeferredIncomeTaxesCreditOperatingIncome
(Less) Provision for Deferred Income Taxes-Cr. (411.1)
234, 272
71,164,440
81,106,518
27,827,080
36,118,907
47,940,965
58,310,149
23,223,475
22,796,369
19
InvestmentTaxCreditAdjustments
Investment Tax Credit Adj. - Net (411.4)
266
204
2,480
59
896
204
2,412
68
20
GainsFromDispositionOfPlant
(Less) Gains from Disp. of Utility Plant (411.6)
21
LossesFromDispositionOfServiceCompanyPlant
Losses from Disp. of Utility Plant (411.7)
22
GainsFromDispositionOfAllowances
(Less) Gains from Disposition of Allowances (411.8)
2,678
2,681
1
2
2,678
2,681
23
LossesFromDispositionOfAllowances
Losses from Disposition of Allowances (411.9)
24
AccretionExpense
Accretion Expense (411.10)
25
UtilityOperatingExpenses
TOTAL Utility Operating Expenses (Enter Total of lines 4 thru 24)
801,700,867
733,506,019
262,426,075
230,336,268
615,911,549
580,709,812
185,263,226
152,211,507
526,092
584,700
27
NetUtilityOperatingIncome
Net Util Oper Inc (Enter Tot line 2 less 25)
202,566,671
172,031,833
57,584,756
52,393,330
181,925,755
153,570,757
20,665,570
18,489,815
24,654
28,739
28
OtherIncomeAndDeductionsAbstract
Other Income and Deductions
29
OtherIncomeAbstract
Other Income
30
NonutilityOperatingIncomeAbstract
Nonutilty Operating Income
31
RevenuesFromMerchandisingJobbingAndContractWork
Revenues From Merchandising, Jobbing and Contract Work (415)
744,028
959,761
352,385
284,681
32
CostsAndExpensesOfMerchandisingJobbingAndContractWork
(Less) Costs and Exp. of Merchandising, Job. & Contract Work (416)
85,953
106,147
29,272
40,201
33
RevenuesFromNonutilityOperations
Revenues From Nonutility Operations (417)
4,337
2,678
2,382
1,314
34
ExpensesOfNonutilityOperations
(Less) Expenses of Nonutility Operations (417.1)
633,220
671,431
179,469
181,156
35
NonoperatingRentalIncome
Nonoperating Rental Income (418)
36
EquityInEarningsOfSubsidiaryCompanies
Equity in Earnings of Subsidiary Companies (418.1)
119
503,479
464,534
38,824
92,064
37
InterestAndDividendIncome
Interest and Dividend Income (419)
1,343,999
7,090
1,042,928
1,204
38
AllowanceForOtherFundsUsedDuringConstruction
Allowance for Other Funds Used During Construction (419.1)
7,821,166
4,501,295
3,264,729
2,183,986
39
MiscellaneousNonoperatingIncome
Miscellaneous Nonoperating Income (421)
1,454,731
5,126,150
55,303
1,280,403
40
GainOnDispositionOfProperty
Gain on Disposition of Property (421.1)
41
OtherIncome
TOTAL Other Income (Enter Total of lines 31 thru 40)
10,145,609
897,438
4,359,556
877,361
42
OtherIncomeDeductionsAbstract
Other Income Deductions
43
LossOnDispositionOfProperty
Loss on Disposition of Property (421.2)
44
MiscellaneousAmortization
Miscellaneous Amortization (425)
45
Donations
Donations (426.1)
576,495
976,107
153,504
211,184
46
LifeInsurance
Life Insurance (426.2)
47
Penalties
Penalties (426.3)
91,744
2,290
89
48
ExpendituresForCertainCivicPoliticalAndRelatedActivities
Exp. for Certain Civic, Political & Related Activities (426.4)
112,516
103,078
17,499
24,061
49
OtherDeductions
Other Deductions (426.5)
3,978,551
4,256,151
2,313,810
1,132,317
50
OtherIncomeDeductions
TOTAL Other Income Deductions (Total of lines 43 thru 49)
4,575,818
3,179,256
2,484,902
897,072
51
TaxesApplicableToOtherIncomeAndDeductionsAbstract
Taxes Applic. to Other Income and Deductions
52
TaxesOtherThanIncomeTaxesOtherIncomeAndDeductions
Taxes Other Than Income Taxes (408.2)
262
25,733
33,780
2,234
9,065
53
IncomeTaxesFederal
Income Taxes-Federal (409.2)
262
6,871,874
6,014,586
13,035,477
3,525,005
54
IncomeTaxesOther
Income Taxes-Other (409.2)
262
1,802,426
1,009,559
1,488,948
346,490
55
ProvisionForDeferredIncomeTaxesOtherIncomeAndDeductions
Provision for Deferred Inc. Taxes (410.2)
234, 272
32,351,228
33,869,934
25,393,985
13,212,560
56
ProvisionForDeferredIncomeTaxesCreditOtherIncomeAndDeductions
(Less) Provision for Deferred Income Taxes-Cr. (411.2)
234, 272
21,651,711
40,577,693
10,204,963
16,069,489
57
InvestmentTaxCreditAdjustmentsNonutilityOperations
Investment Tax Credit Adj.-Net (411.5)
58
InvestmentTaxCredits
(Less) Investment Tax Credits (420)
59
TaxesOnOtherIncomeAndDeductions
TOTAL Taxes on Other Income and Deductions (Total of lines 52-58)
2,050,950
350,166
666,831
1,023,631
60
NetOtherIncomeAndDeductions
Net Other Income and Deductions (Total of lines 41, 50, 59)
3,518,841
1,931,652
1,207,823
750,802
61
InterestChargesAbstract
Interest Charges
62
InterestOnLongTermDebt
Interest on Long-Term Debt (427)
65,989,617
64,083,644
22,031,752
21,461,170
63
AmortizationOfDebtDiscountAndExpense
Amort. of Debt Disc. and Expense (428)
1,387,085
1,036,268
462,370
377,071
64
AmortizationOfLossOnReacquiredDebt
Amortization of Loss on Reaquired Debt (428.1)
2,107,446
2,107,446
702,482
702,482
65
AmortizationOfPremiumOnDebtCredit
(Less) Amort. of Premium on Debt-Credit (429)
66
AmortizationOfGainOnReacquiredDebtCredit
(Less) Amortization of Gain on Reaquired Debt-Credit (429.1)
67
InterestOnDebtToAssociatedCompanies
Interest on Debt to Assoc. Companies (430)
68
OtherInterestExpense
Other Interest Expense (431)
4,508,910
6,933,064
1,823,175
2,043,580
69
AllowanceForBorrowedFundsUsedDuringConstructionCredit
(Less) Allowance for Borrowed Funds Used During Construction-Cr. (432)
3,411,580
1,861,364
1,423,196
906,169
70
NetInterestCharges
Net Interest Charges (Total of lines 62 thru 69)
70,581,478
72,299,058
23,596,583
23,678,134
71
IncomeBeforeExtraordinaryItems
Income Before Extraordinary Items (Total of lines 27, 60 and 70)
135,504,034
101,664,427
35,195,996
29,465,998
72
ExtraordinaryItemsAbstract
Extraordinary Items
73
ExtraordinaryIncome
Extraordinary Income (434)
74
ExtraordinaryDeductions
(Less) Extraordinary Deductions (435)
75
NetExtraordinaryItems
Net Extraordinary Items (Total of line 73 less line 74)
76
IncomeTaxesExtraordinaryItems
Income Taxes-Federal and Other (409.3)
262
77
ExtraordinaryItemsAfterTaxes
Extraordinary Items After Taxes (line 75 less line 76)
78
NetIncomeLoss
Net Income (Total of line 71 and 77)
135,504,034
101,664,427
35,195,996
29,465,998


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report


End of:
2021
/
Q3
STATEMENT OF RETAINED EARNINGS
  1. Do not report Lines 49-53 on the quarterly report.
  2. Report all changes in appropriated retained earnings, unappropriated retained earnings, and unappropriated undistributed subsidiary earnings for the year.
  3. Each credit and debit during the year should be identified as to the retained earnings account in which recorded (Accounts 433, 436-439 inclusive). Show the contra primary account affected in column (b).
  4. State the purpose and amount for each reservation or appropriation of retained earnings.
  5. List first Account 439, Adjustments to Retained Earnings, reflecting adjustments to the opening balance of retained earnings. Follow by credit, then debit items, in that order.
  6. Show dividends for each class and series of capital stock.
  7. Show separately the State and Federal income tax effect of items shown for Account 439, Adjustments to Retained Earnings.
  8. Explain in a footnote the basis for determining the amount reserved or appropriated. If such reservation or appropriation is to be recurrent, state the number and annual amounts to be reserved or appropriated as well as the totals eventually to be accumulated.
  9. If any notes appearing in the report to stockholders are applicable to this statement, attach them at page 122-123.
Line No.
Item
(a)
Contra Primary Account Affected
(b)
Current Quarter/Year Year to Date Balance
(c)
Previous Quarter/Year Year to Date Balance
(d)
UnappropriatedRetainedEarningsAbstract
UNAPPROPRIATED RETAINED EARNINGS (Account 216)
1
UnappropriatedRetainedEarnings
Balance-Beginning of Period
666,673,846
632,569,216
2
ChangesAbstract
Changes
3
AdjustmentsToRetainedEarningsAbstract
Adjustments to Retained Earnings (Account 439)
4
AdjustmentsToRetainedEarningsCreditAbstract
Adjustments to Retained Earnings Credit
9
AdjustmentsToRetainedEarningsCredit
TOTAL Credits to Retained Earnings (Acct. 439)
10
AdjustmentsToRetainedEarningsDebitAbstract
Adjustments to Retained Earnings Debit
15
AdjustmentsToRetainedEarningsDebit
TOTAL Debits to Retained Earnings (Acct. 439)
16
BalanceTransferredFromIncome
Balance Transferred from Income (Account 433 less Account 418.1)
136,007,513
154,454,366
17
AppropriationsOfRetainedEarningsAbstract
Appropriations of Retained Earnings (Acct. 436)
22
AppropriationsOfRetainedEarnings
TOTAL Appropriations of Retained Earnings (Acct. 436)
23
DividendsDeclaredPreferredStockAbstract
Dividends Declared-Preferred Stock (Account 437)
29
DividendsDeclaredPreferredStock
TOTAL Dividends Declared-Preferred Stock (Acct. 437)
30
DividendsDeclaredCommonStockAbstract
Dividends Declared-Common Stock (Account 438)
30.1
DividendsDeclaredCommonStock
Common Stock Dividend
95,149,204
120,349,736
36
DividendsDeclaredCommonStock
TOTAL Dividends Declared-Common Stock (Acct. 438)
95,149,204
120,349,736
37
TransfersFromUnappropriatedUndistributedSubsidiaryEarnings
Transfers from Acct 216.1, Unapprop. Undistrib. Subsidiary Earnings
38
UnappropriatedRetainedEarnings
Balance - End of Period (Total 1,9,15,16,22,29,36,37)
707,532,155
666,673,846
39
AppropriatedRetainedEarningsAbstract
APPROPRIATED RETAINED EARNINGS (Account 215)
45
AppropriatedRetainedEarnings
TOTAL Appropriated Retained Earnings (Account 215)
AppropriatedRetainedEarningsAmortizationReserveFederalAbstract
APPROP. RETAINED EARNINGS - AMORT. Reserve, Federal (Account 215.1)
46
AppropriatedRetainedEarningsAmortizationReserveFederal
TOTAL Approp. Retained Earnings-Amort. Reserve, Federal (Acct. 215.1)
47
AppropriatedRetainedEarningsIncludingReserveAmortization
TOTAL Approp. Retained Earnings (Acct. 215, 215.1) (Total 45,46)
48
RetainedEarnings
TOTAL Retained Earnings (Acct. 215, 215.1, 216) (Total 38, 47) (216.1)
707,532,155
666,673,846
UnappropriatedUndistributedSubsidiaryEarningsAbstract
UNAPPROPRIATED UNDISTRIBUTED SUBSIDIARY EARNINGS (Account Report only on an Annual Basis, no Quarterly)
49
UnappropriatedUndistributedSubsidiaryEarnings
Balance-Beginning of Year (Debit or Credit)
1,295,383
50
EquityInEarningsOfSubsidiaryCompanies
Equity in Earnings for Year (Credit) (Account 418.1)
503,479
464,534
51
DividendsReceived
(Less) Dividends Received (Debit)
52
ChangesUnappropriatedUndistributedSubsidiaryEarningsCredits
TOTAL other Changes in unappropriated undistributed subsidiary earnings for the year
53
UnappropriatedUndistributedSubsidiaryEarnings
Balance-End of Year (Total lines 49 thru 52)
791,902


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
STATEMENT OF CASH FLOWS
  1. Codes to be used:(a) Net Proceeds or Payments;(b)Bonds, debentures and other long-term debt; (c) Include commercial paper; and (d) Identify separately such items as investments, fixed assets, intangibles, etc.
  2. Information about noncash investing and financing activities must be provided in the Notes to the Financial statements. Also provide a reconciliation between "Cash and Cash Equivalents at End of Period" with related amounts on the Balance Sheet.
  3. Operating Activities - Other: Include gains and losses pertaining to operating activities only. Gains and losses pertaining to investing and financing activities should be reported in those activities. Show in the Notes to the Financials the amounts of interest paid (net of amount capitalized) and income taxes paid.
  4. Investing Activities: Include at Other (line 31) net cash outflow to acquire other companies. Provide a reconciliation of assets acquired with liabilities assumed in the Notes to the Financial Statements. Do not include on this statement the dollar amount of leases capitalized per the USofA General Instruction 20; instead provide a reconciliation of the dollar amount of leases capitalized with the plant cost.
Line No.
Description (See Instructions No.1 for explanation of codes)
(a)
Current Year to Date Quarter/Year
(b)
Previous Year to Date Quarter/Year
(c)
1
NetCashFlowFromOperatingActivitiesAbstract
Net Cash Flow from Operating Activities
2
NetIncomeLoss
Net Income (Line 78(c) on page 117)
135,504,034
101,664,427
3
NoncashChargesCreditsToIncomeAbstract
Noncash Charges (Credits) to Income:
4
DepreciationAndDepletion
Depreciation and Depletion
119,645,835
113,401,937
5
NoncashAdjustmentsToCashFlowsFromOperatingActivities
Amortization of (Specify) (footnote details)
5.1
NoncashAdjustmentsToCashFlowsFromOperatingActivitiesDescription
Amortization of
20,922,060
20,602,765
5.2
NoncashAdjustmentsToCashFlowsFromOperatingActivitiesDescription
Other Noncash Charges to Income, Net
(a)
16,131,569
(e)
8,969,708
8
DeferredIncomeTaxesNet
Deferred Income Taxes (Net)
680,299
3,758,568
9
InvestmentTaxCreditAdjustmentsNet
Investment Tax Credit Adjustment (Net)
204
2,480
10
NetIncreaseDecreaseInReceivablesOperatingActivities
Net (Increase) Decrease in Receivables
6,444,338
11,421,589
11
NetIncreaseDecreaseInInventoryOperatingActivities
Net (Increase) Decrease in Inventory
23,403,109
15,163,994
12
NetIncreaseDecreaseInAllowancesInventoryOperatingActivities
Net (Increase) Decrease in Allowances Inventory
13
NetIncreaseDecreaseInPayablesAndAccruedExpensesOperatingActivities
Net Increase (Decrease) in Payables and Accrued Expenses
35,678,228
64,966,415
14
NetIncreaseDecreaseInOtherRegulatoryAssetsOperatingActivities
Net (Increase) Decrease in Other Regulatory Assets
1,170,270
6,272,970
15
NetIncreaseDecreaseInOtherRegulatoryLiabilitiesOperatingActivities
Net Increase (Decrease) in Other Regulatory Liabilities
7,574,942
9,354,327
16
AllowanceForOtherFundsUsedDuringConstructionOperatingActivities
(Less) Allowance for Other Funds Used During Construction
7,821,166
4,501,295
17
UndistributedEarningsFromSubsidiaryCompaniesOperatingActivities
(Less) Undistributed Earnings from Subsidiary Companies
503,479
464,534
18
OtherAdjustmentsToCashFlowsFromOperatingActivities
Other (provide details in footnote):
18.1
OtherAdjustmentsToCashFlowsFromOperatingActivitiesDescription
Other
(b)
72,262,002
(f)
40,692,789
22
NetCashFlowFromOperatingActivities
Net Cash Provided by (Used in) Operating Activities (Total of Lines 2 thru 21)
221,917,551
323,130,530
24
CashFlowsFromInvestmentActivitiesAbstract
Cash Flows from Investment Activities:
25
ConstructionAndAcquisitionOfPlantIncludingLandAbstract
Construction and Acquisition of Plant (including land):
26
GrossAdditionsToUtilityPlantLessNuclearFuelInvestingActivities
Gross Additions to Utility Plant (less nuclear fuel)
279,913,515
275,113,274
27
GrossAdditionsToNuclearFuelInvestingActivities
Gross Additions to Nuclear Fuel
28
GrossAdditionsToCommonUtilityPlantInvestingActivities
Gross Additions to Common Utility Plant
40,398,233
13,281,237
29
GrossAdditionsToNonutilityPlantInvestingActivities
Gross Additions to Nonutility Plant
30
AllowanceForOtherFundsUsedDuringConstructionInvestingActivities
(Less) Allowance for Other Funds Used During Construction
7,821,166
4,501,295
31
OtherConstructionAndAcquisitionOfPlantInvestmentActivities
Other (provide details in footnote):
34
CashOutflowsForPlant
Cash Outflows for Plant (Total of lines 26 thru 33)
312,490,582
283,893,216
36
AcquisitionOfOtherNoncurrentAssets
Acquisition of Other Noncurrent Assets (d)
37
ProceedsFromDisposalOfNoncurrentAssets
Proceeds from Disposal of Noncurrent Assets (d)
39
InvestmentsInAndAdvancesToAssociatedAndSubsidiaryCompanies
Investments in and Advances to Assoc. and Subsidiary Companies
40
ContributionsAndAdvancesFromAssociatedAndSubsidiaryCompanies
Contributions and Advances from Assoc. and Subsidiary Companies
41
DispositionOfInvestmentsInAndAdvancesToAssociatedAndSubsidiaryCompaniesAbstract
Disposition of Investments in (and Advances to)
42
DispositionOfInvestmentsInAndAdvancesToAssociatedAndSubsidiaryCompanies
Disposition of Investments in (and Advances to) Associated and Subsidiary Companies
44
PurchaseOfInvestmentSecurities
Purchase of Investment Securities (a)
45
ProceedsFromSalesOfInvestmentSecurities
Proceeds from Sales of Investment Securities (a)
46
LoansMadeOrPurchased
Loans Made or Purchased
47
CollectionsOnLoans
Collections on Loans
49
NetIncreaseDecreaseInReceivablesInvestingActivities
Net (Increase) Decrease in Receivables
50
NetIncreaseDecreaseInInventoryInvestingActivities
Net (Increase) Decrease in Inventory
51
NetIncreaseDecreaseInAllowancesHeldForSpeculationInvestingActivities
Net (Increase) Decrease in Allowances Held for Speculation
52
NetIncreaseDecreaseInPayablesAndAccruedExpensesInvestingActivities
Net Increase (Decrease) in Payables and Accrued Expenses
53
OtherAdjustmentsToCashFlowsFromInvestmentActivities
Other (provide details in footnote):
53.1
OtherAdjustmentsToCashFlowsFromInvestmentActivitiesDescription
Investment in Equity Securities
655,221
41,825
57
CashFlowsProvidedFromUsedInInvestmentActivities
Net Cash Provided by (Used in) Investing Activities (Total of lines 34 thru 55)
313,145,803
283,935,041
59
CashFlowsFromFinancingActivitiesAbstract
Cash Flows from Financing Activities:
60
ProceedsFromIssuanceAbstract
Proceeds from Issuance of:
61
ProceedsFromIssuanceOfLongTermDebtFinancingActivities
Long-Term Debt (b)
99,915,000
150,000,000
62
ProceedsFromIssuanceOfPreferredStockFinancingActivities
Preferred Stock
63
ProceedsFromIssuanceOfCommonStockFinancingActivities
Common Stock
121,065,812
64
OtherAdjustmentsToCashFlowsFromFinancingActivities
Other (provide details in footnote):
64.1
OtherAdjustmentsToCashFlowsFromFinancingActivitiesDescription
Treasury Stock Activity
360,563
1,723,599
66
NetIncreaseInShortTermDebt
Net Increase in Short-Term Debt (c)
100,000,000
67
OtherAdjustmentsByOutsideSourcesToCashFlowsFromFinancingActivities
Other (provide details in footnote):
67.1
DescriptionForOtherAdjustmentsByOutsideSourcesToCashFlowsFromFinancingActivities
Line of Credit (Repayments) Borrowings, Net
70
CashProvidedByOutsideSources
Cash Provided by Outside Sources (Total 61 thru 69)
221,341,375
248,276,401
72
PaymentsForRetirementAbstract
Payments for Retirement of:
73
PaymentsForRetirementOfLongTermDebtFinancingActivities
Long-term Debt (b)
955,280
74
PaymentsForRetirementOfPreferredStockFinancingActivities
Preferred Stock
75
PaymentsForRetirementOfCommonStockFinancingActivities
Common Stock
76
OtherRetirementsOfBalancesImpactingCashFlowsFromFinancingActivities
Other (provide details in footnote):
76.1
DescriptionOfOtherRetirementsImpactingCashFlowsFromFinancingActivities
Debt Financing Costs
909,219
2,564,470
76.2
DescriptionOfOtherRetirementsImpactingCashFlowsFromFinancingActivities
Line of Credit (Repayments) Borrowings, Net
73,000,000
193,000,000
78
NetDecreaseInShortTermDebt
Net Decrease in Short-Term Debt (c)
100,000,000
80
DividendsOnPreferredStock
Dividends on Preferred Stock
81
DividendsOnCommonStock
Dividends on Common Stock
95,149,204
90,260,093
83
CashFlowsProvidedFromUsedInFinancingActivities
Net Cash Provided by (Used in) Financing Activities (Total of lines 70 thru 81)
97,327,672
37,548,162
85
NetIncreaseDecreaseInCashAndCashEquivalentsAbstract
Net Increase (Decrease) in Cash and Cash Equivalents
86
NetIncreaseDecreaseInCashAndCashEquivalents
Net Increase (Decrease) in Cash and Cash Equivalents (Total of line 22, 57 and 83)
6,099,420
1,647,327
88
CashAndCashEquivalents
Cash and Cash Equivalents at Beginning of Period
(c)
15,397,446
(g)
10,128,143
90
CashAndCashEquivalents
Cash and Cash Equivalents at End of Period
(d)
21,496,866
(h)
11,775,470


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: NoncashAdjustmentsToCashFlowsFromOperatingActivities
9/30/2021 9/30/2020
Other Noncash Charges to Income, Net:
Amortization of debt issue costs, discount, and deferred hedge gain 3,953,839  3,604,022 
Other noncash gains 6,327,787  19,072 
Stock based compensation costs 5,849,943  5,346,614 
16,131,569  8,969,708 
Other Assets and Liabilities, Net:
Net change - other current assets (6,982,111) (3,433,064)
Net change - accrued utility revenues 22,308,011  29,347,961 
Net change - deferred debits (83,555,808) 17,969,041 
Net change - deferred credits 27,216,685  4,181,944 
Net change - noncurrent liabilities (31,248,779) (7,373,093)
(72,262,002) 40,692,789 
(b) Concept: OtherAdjustmentsToCashFlowsFromOperatingActivities
Refer to footnote (a) for details.
(c) Concept: CashAndCashEquivalents
9/30/2021 12/31/2020 9/30/2020 12/31/2019
Cash (131) 7,118,962  5,454,203  2,660,460  4,652,822 
Working Funds (135) 22,950  22,950  22,950  23,150 
Special Funds (125-128) —  250,000  250,000  250,000 
Other Special Deposits (134) 14,354,954  9,670,293  8,842,060  5,202,171 
Total 21,496,866  15,397,446  11,775,470  10,128,143 
(d) Concept: CashAndCashEquivalents
Refer to footnote (c) for details.
(e) Concept: NoncashAdjustmentsToCashFlowsFromOperatingActivities
Refer to footnote (a) for details.
(f) Concept: OtherAdjustmentsToCashFlowsFromOperatingActivities
Refer to footnote (a) for details.
(g) Concept: CashAndCashEquivalents
Refer to footnote (c) for details.
(h) Concept: CashAndCashEquivalents
Refer to footnote (c) for details.

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
NOTES TO FINANCIAL STATEMENTS
  1. Use the space below for important notes regarding the Balance Sheet, Statement of Income for the year, Statement of Retained Earnings for the year, and Statement of Cash Flows, or any account thereof. Classify the notes according to each basic statement, providing a subheading for each statement except where a note is applicable to more than one statement.
  2. Furnish particulars (details) as to any significant contingent assets or liabilities existing at end of year, including a brief explanation of any action initiated by the Internal Revenue Service involving possible assessment of additional income taxes of material amount, or of a claim for refund of income taxes of a material amount initiated by the utility. Give also a brief explanation of any dividends in arrears on cumulative preferred stock.
  3. For Account 116, Utility Plant Adjustments, explain the origin of such amount, debits and credits during the year, and plan of disposition contemplated, giving references to Cormmission orders or other authorizations respecting classification of amounts as plant adjustments and requirements as to disposition thereof.
  4. Where Accounts 189, Unamortized Loss on Reacquired Debt, and 257, Unamortized Gain on Reacquired Debt, are not used, give an explanation, providing the rate treatment given these items. See General Instruction 17 of the Uniform System of Accounts.
  5. Give a concise explanation of any retained earnings restrictions and state the amount of retained earnings affected by such restrictions.
  6. If the notes to financial statements relating to the respondent company appearing in the annual report to the stockholders are applicable and furnish the data required by instructions above and on pages 114-121, such notes may be included herein.
  7. For the 3Q disclosures, respondent must provide in the notes sufficient disclosures so as to make the interim information not misleading. Disclosures which would substantially duplicate the disclosures contained in the most recent FERC Annual Report may be omitted.
  8. For the 3Q disclosures, the disclosures shall be provided where events subsequent to the end of the most recent year have occurred which have a material effect on the respondent. Respondent must include in the notes significant changes since the most recently completed year in such items as: accounting principles and practices; estimates inherent in the preparation of the financial statements; status of long-term contracts; capitalization including significant new borrowings or modifications of existing financing agreements; and changes resulting from business combinations or dispositions. However were material contingencies exist, the disclosure of such matters shall be provided even though a significant change since year end may not have occurred.
  9. Finally, if the notes to the financial statements relating to the respondent appearing in the annual report to the stockholders are applicable and furnish the data required by the above instructions, such notes may be included herein.
(1) Nature of Operations and Basis of Consolidation

NorthWestern Corporation, doing business as NorthWestern Energy, provides electricity and/or natural gas to approximately 743,000 customers in Montana, South Dakota, Nebraska and Yellowstone National Park.

The preparation of financial statements in conformity with accounting requirements of the Federal Energy Regulatory Commission (FERC) as set forth in its applicable Uniform System of Accounts requires management to make estimates and assumptions that may affect the reported amounts of assets, liabilities, revenues and expenses during the reporting period. Actual results could differ from those estimates. The unaudited Financial Statements reflect all adjustments (which unless otherwise noted are normal and recurring in nature) that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows. The actual results for the interim periods are not necessarily indicative of the operating results to be expected for a full year or for other interim periods. Events occurring subsequent to September 30, 2021 have been evaluated as to their potential impact to the Financial Statements through the date of issuance.

The Financial Statements included herein have been prepared by NorthWestern, without audit, pursuant to the rules and regulations of the FERC as set forth in its applicable Uniform System of Accounts. Certain information and footnote disclosures normally included in financial statements prepared in accordance with the accounting requirements of the FERC as set forth in its applicable Uniform System of Accounts and published accounting releases have been condensed or omitted pursuant to such rules and regulations; however, management believes that the condensed disclosures provided are adequate to make the information presented not misleading. Management recommends that these Financial Statements be read in conjunction with the audited financial statements and related footnotes included in our Annual FERC Form 1 Report for the year ended December 31, 2020.

Financial Statement Presentation

The financial statements are presented on the basis of the accounting requirements of the FERC as set forth in its applicable Uniform System of Accounts and published accounting releases, which is a comprehensive basis of accounting other than accounting principles generally accepted in the United States of America (GAAP). This report differs from GAAP due to FERC requiring the presentation of subsidiaries on the equity method of accounting, which differs from Accounting Standards Codification (ASC) 810, Consolidation. ASC 810 requires that all majority-owned subsidiaries be consolidated (see Note 4). The other significant differences consist of the following:

Earnings per share and footnotes for revenue from contracts with customers, and segment and related information, are not presented;
Removal and decommissioning costs of generation, transmission and distribution assets are reflected in the Balance Sheets as a component of accumulated depreciation of $474.4 million and $464.7 million as of September 30, 2021 and December 31, 2020, respectively, in accordance with regulatory treatment as compared to regulatory liabilities for GAAP purposes;
Goodwill is reflected in the Balance Sheets as a utility plant adjustments of $357.6 million as of September 30, 2021 and December 31, 2020, respectively, in accordance with regulatory treatment, as compared to goodwill for GAAP purposes;
The write-down of plant values associated with the 2002 acquisition of the Montana operations is reflected in the Balance Sheets as a component of accumulated depreciation of $147.6 million for September 30, 2021 and December 31, 2020, respectively, in accordance with regulatory treatment as compared to plant for GAAP purposes;
The current portion of gas stored underground is reflected in the Balance Sheets as current and accrued assets, as compared to inventory for GAAP purposes;
Operating lease right of use assets are classified in the Balance Sheets as capital leases in accordance with regulatory treatment, as compared to non-current assets for GAAP purposes;
Operating lease liabilities are reflected as current and long term obligations under capital leases in the Balance Sheets, as compared to accrued expenses and long term liabilities for GAAP purposes;
Unamortized debt expense is classified in the Balance Sheets as deferred debits in accordance with regulatory treatment, as compared to long-term debt for GAAP purposes;
Current and long-term debt is classified in the Balance Sheets as all long-term debt in accordance with regulatory treatment, while current and long-term debt are presented separately for GAAP reporting;
The current portion of the provision for injuries and damages and the expected insurance proceeds receivable related to the provision for injuries and damages are reported as a current liability for GAAP purposes, as compared to a non-current liability for FERC purposes;
Accumulated deferred tax assets and liabilities are classified in the Balance Sheets as gross non-current deferred debits and credits, respectively, while GAAP presentation reflects a net non-current deferred tax liability;
Stranded tax effects associated with the Tax Cuts and Jobs Act are included in accumulated other comprehensive income (AOCI) in accordance with regulatory treatment, while included in retained earnings for GAAP purposes;
Uncertain tax positions related to temporary differences are classified in the Balance Sheets within the deferred tax accounts in accordance with regulatory treatment, as compared to other noncurrent liabilities for GAAP purposes. In addition, interest related to uncertain tax positions is recognized in interest expense in accordance with regulatory treatment, as compared to income tax expense for GAAP purposes;
Net periodic benefit costs and net periodic postretirement benefit costs are reflected in operating expense for FERC purposes, as compared to the GAAP presentation, which reflects the current service costs component of the net periodic benefit costs in operating expenses and the other components outside of income from operations. In addition, only the service cost component of net periodic benefit cost is eligible for capitalization for GAAP purposes, as compared to the total net periodic benefit costs for FERC purposes;
Regulatory assets and liabilities are reflected in the Balance Sheets as non-current items, while current and non-current amounts are presented separately for GAAP;
Unbilled revenue is reflected in the Balance Sheets as Accrued utility revenue of $58.2 million and $80.5 million as of September 30, 2021 and December 31, 2020, respectively, in accordance with regulatory treatment, as compared to Accounts receivable, net for GAAP purposes;
Implementation costs associated with cloud computing arrangements are reflected on the Balance Sheets as Miscellaneous Intangible Plant in accordance with regulatory treatment, as compared to Other current assets for GAAP purposes. Additionally, these cash outflows are presented within investing activities cash outflows in the Statement of Cash Flows in accordance with regulatory treatment, as compared to operating activities cash outflows for GAAP purposes; and
GAAP revenue differs from FERC revenue primarily due to the equity method of accounting as discussed above, netting of electric purchases and sales for resale in revenue for the GAAP presentation as compared to a gross presentation for FERC purposes (with the exception of those transactions in a regional transmission organization (RTO)), the netting of RTO transmission transactions for the GAAP presentation as compared to a gross presentation for FERC purposes, and the classification of regulatory amortizations in revenue for GAAP purposes as compared to expense for FERC purposes.

The following table reconciles GAAP revenues to FERC revenues by segment for the three and nine months ended 2021 and 2020 (in millions):
Three Months Ended September 30, 2021
TotalElectricNatural GasOther
GAAP Revenues$326.0 $287.5 $38.5 $— 
Revenue from equity investments(0.8)— (0.8)— 
Grossing revenues / power purchases7.5 7.5 — — 
Regulatory amortizations(14.9)(9.6)(5.3)— 
Other2.2 2.4 (0.2)— 
FERC Revenues$320.0 $287.8 $32.2 $— 

Three Months Ended September 30, 2020
TotalElectricNatural GasOther
GAAP Revenues$280.6 $244.1 $36.5 $— 
Revenue from equity investments(0.8)— (0.8)— 
Grossing revenues / power purchases4.2 4.2 — — 
Regulatory amortizations(1.3)6.0 (7.3)— 
Other— 0.2 (0.2)— 
FERC Revenues$282.7 $254.5 $28.2 $— 

Nine Months Ended September 30, 2021
TotalElectricNatural GasOther
GAAP Revenues$1,025.0 $799.0 $226.0 $— 
Revenue from equity investments(2.3)— (2.3)— 
Grossing revenues / power purchases23.1 23.1 — — 
Regulatory amortizations(44.9)(28.1)(16.8)— 
Other3.4 3.8 (0.9)0.5 
FERC Revenues$1,004.3 $797.8 $206.0 $0.5 

Nine Months Ended September 30, 2020
TotalElectricNatural GasOther
GAAP Revenues$885.2 $706.7 $178.5 $— 
Revenue from equity investments(2.5)— (2.5)— 
Grossing revenues / power purchases15.6 15.6 — — 
Regulatory amortizations7.1 11.2 (4.1)— 
Other0.1 0.7 (1.2)0.6 
FERC Revenues$905.5 $734.2 $170.7 $0.6 

Supplemental Cash Flow Information
The following table provides a reconciliation of cash, workings funds, other special funds, and special deposits reported within the Balance Sheets that sum to the total of the same such amounts shown in the Statements of Cash Flows (in thousands):

September 30, 2021December 31, 2020September 30, 2020December 31, 2019
Cash$7,119 $5,454 $2,660 $4,653 
Working funds23 23 23 23 
Other special funds— 250 250 250 
Special deposits14,355 9,670 8,842 5,202 
Total shown in the Statements of Cash Flows$21,497 $15,397 $11,775 $10,128 

Utility Plant Adjustment

We completed our annual utility plant adjustment impairment test as of April 1, 2021 and no impairment was identified. We calculate the fair value of our reporting units by considering various factors, including valuation studies based primarily on a discounted cash flow analysis, with published industry valuations and market data as supporting information. Key assumptions in the determination of fair value include the use of an appropriate discount rate and estimated future cash flows. In estimating cash flows, we incorporate expected long-term growth rates in our service territory, regulatory stability, and commodity prices (where appropriate), as well as other factors that affect our revenue, expense and capital expenditure projections.
(2) Regulatory Matters

Power Costs and Credits Adjustment Mechanism (PCCAM) - Montana

We track electric supply costs for our Montana electric utility, such as purchased power and fuel, against a forecast of costs approved by the Montana Public Service Commission (MPSC). This forecast is referred to as the power costs and credits adjustment mechanism base (PCCAM Base). Our QF power purchase costs are separate from the PCCAM Base and 100% of QF power purchase costs are recoverable through rates. If our actual costs exceed the approved PCCAM Base on an annual basis, we can recover 90% of the excess costs, with the non-recoverable 10% impacting net income. During the three and nine months ended September 30, 2021, we recognized $2.7 million and $4.1 million of non-recoverable excess PCCAM supply costs, respectively, compared to $0.6 million and $0.5 million of non-recoverable excess PCCAM supply costs for the three and nine months ended September 30, 2020, respectively.

The current PCCAM Base, approved in 2019, no longer reflects an accurate current forecast of our fuel and power costs. In April 2021, we filed an application with the MPSC for approval to increase the PCCAM Base by approximately $17.0 million. On June 29, 2021, the MPSC approved interim rates reflecting our request, subject to refund. As of September 30, 2021, we have collected and deferred approximately $3.8 million associated with the interim rates. On August 2, 2021, the Montana Consumer Counsel (MCC) filed a motion asking the MPSC to dismiss the application arguing that the MPSC issued a Final Order in 2018 prohibiting NorthWestern from requesting an update to the PCCAM Base, except in a general rate case. NorthWestern argued that the tariff, which the MPSC approved as implementing the Final Order, allows us to file an application outside of a general rate case. On October 5, 2021, the MPSC voted to grant the MCC’s motion to dismiss, and we await the final written order.

If we continue to experience higher power and fuel costs relative to the approved PCCAM Base, the sharing mechanism will result in delayed recovery for 90% of the excess supply costs and higher losses for the remaining non-recoverable 10% of the excess costs.

FERC Filing - Montana Transmission Service Rates

In May 2019, we submitted a filing with the Federal Energy Regulatory Commission (FERC) for our Montana transmission assets. In June 2019, the FERC issued an order accepting our filing, and granting interim rates (subject to
refund) effective July 1, 2019. In November 2020, we filed a settlement and implemented settlement rates on December 1, 2020. In January 2021, the FERC approved our settlement and during the first quarter of 2021 we refunded approximately $20.5 million to our FERC regulated customers.

Revenues from FERC regulated customers associated with our Montana FERC assets are reflected in our MPSC jurisdictional rates as a credit to retail customers. In March 2021, we submitted a compliance filing with the MPSC adjusting the revenue credit in our Montana retail rates to reflect the FERC approved settlement rates and a refund to retail customers of the difference between the FERC interim rates and the FERC approved settlement rates that were collected during the period from July 1, 2019 through March 31, 2021. On May 19, 2021, the MPSC approved the proposed tariffs and rates on a final basis. During the second quarter of 2021, we recognized a $4.7 million favorable adjustment related to excess miscellaneous current and accrued liabilities based on the final MPSC approval. As of September 30, 2021, we had miscellaneous current and accrued liabilities remaining of approximately $3.9 million recorded on the Balance Sheets.

Montana Community Renewable Energy Projects (CREPs)

We were required to acquire, as of December 31, 2020, approximately 65 MW of CREPs. While we have made progress towards meeting this obligation by acquiring approximately 50 MW of CREPs, we have been unable to acquire the remaining MWs required for various reasons, including the fact that proposed projects fail to qualify as CREPs or do not meet the statutory cost cap. The MPSC granted us waivers for 2012 through 2016. The validity of the MPSC’s action as it related to waivers granted for 2015 and 2016 has been challenged legally and has been fully briefed before the Montana Supreme Court.

On May 14, 2021, the Montana Governor signed a bill that repealed the CREP requirement. We notified the Montana Supreme Court of the repeal. We also dismissed our pending application filed with the MPSC for a waiver from full compliance for years 2017 through 2020.

On September 7, 2021, the Montana Supreme Court remanded the case to the District Court to determine whether the repeal of the CREP requirement made the petition challenging the waivers granted for 2015 and 2016 moot. The District Court has established a briefing schedule and we do not expect a decision from the District Court until at least the first quarter of 2022.

If the Montana Courts and/or MPSC determine that the repeal should not be applied retroactively and find that waivers should not be granted, we could be liable for penalties. However, we do not believe any such penalties would be material.

FERC Financial Audit

We are subject to FERC’s jurisdiction and regulations with respect to rates for electric transmission service in interstate commerce and electricity sold at wholesale rates, the issuance of certain securities, and incurrence of certain long-term debt, among other things. The Division of Audits and Accounting in the Office of Enforcement of FERC has initiated a routine audit of NorthWestern Corporation for the period of January 1, 2018 to the present to evaluate our compliance with FERC accounting and financial reporting requirements. We have responded to several sets of data requests as part of the audit process. An audit report has not yet been received from FERC, but is expected within the next six months. Management is unable to predict the outcome or timing of the final resolution of the audit.
(3) Income Taxes

We compute income tax expense for each quarter based on the estimated annual effective tax rate for the year, adjusted for certain discrete items. Our effective tax rate typically differs from the federal statutory tax rate due to the regulatory impact of flowing through the federal and state tax benefit of repairs deductions, state tax benefit of accelerated tax depreciation deductions (including bonus depreciation when applicable) and production tax credits. The regulatory accounting treatment of these deductions requires immediate income recognition for temporary tax differences of this type, which is referred to as the flow-through method. When the flow-through method of accounting for temporary differences is reflected in regulated revenues, we record deferred income taxes and establish related regulatory assets and liabilities.

The following table summarizes the differences between our effective tax rate and the federal statutory rate (in thousands):
Three Months Ended September 30,
20212020
Income Before Income Taxes$32,887 $26,745 
Income tax calculated at federal statutory rate6,906 21.0 %5,616 21.0 %
Permanent or flow-through adjustments:
State income tax, net of federal provisions397 1.2 46 0.2 
Flow-through repairs deductions(3,473)(10.6)(4,213)(15.8)
Production tax credits(1,877)(5.7)(2,205)(8.3)
Share-based compensation(62)(0.2)— 0.0 
Amortization of excess deferred income tax(126)(0.4)(222)(0.8)
Prior year permanent return to accrual adjustments389 1.2 (1,719)(6.4)
Plant and depreciation of flow-through items(288)(0.9)103 0.4 
Other, net443 1.4 (127)(0.5)
(4,597)(14.0)(8,337)(31.2)
Income tax expense (benefit)$2,309 7.0 %$(2,721)(10.2)%

Nine Months Ended September 30,
20212020
Income Before Income Taxes$131,853 $96,395 
Income tax calculated at federal statutory rate27,689 21.0 %20,252 21.0 %
Permanent or flow-through adjustments:
State income tax, net of federal provisions674 0.5 73 0.1 
Flow-through repairs deductions(15,553)(11.8)(14,859)(15.4)
Production tax credits(8,446)(6.4)(7,553)(7.9)
Share-based compensation(323)(0.2)(609)(0.6)
Amortization of excess deferred income tax(534)(0.4)(731)(0.8)
Prior year permanent return to accrual adjustments389 0.3 (1,719)(1.8)
Plant and depreciation of flow-through items(812)(0.6)299 0.3 
Other, net567 0.4 (413)(0.4)
(24,038)(18.2)(25,512)(26.5)
Income tax expense (benefit)$3,651 2.8 %$(5,260)(5.5)%

Uncertain Tax Positions
We recognize tax positions that meet the more-likely-than-not threshold as the largest amount of tax benefit that is greater than 50 percent likely of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. We had unrecognized tax benefits of approximately $32.5 million as of September 30, 2021, including approximately $28.1 million that, if recognized, would impact our effective tax rate. We do not anticipate that total unrecognized tax benefits will significantly change due to the settlement of audits or the expiration of statutes of limitation within the next twelve months.

Our policy is to recognize interest related to uncertain tax positions in interest expense. As of September 30, 2021, we have $0.3 million accrued for the payment of interest.

Tax years 2017 and forward remain subject to examination by the Internal Revenue Service (IRS) and state taxing authorities. In addition, the available federal net operating loss carryforward may be reduced by the IRS for losses originating in certain tax years from 2003 forward.
(4) Equity Investments

The following table presents our equity investments reflected in the investments in subsidiary companies on the Balance Sheets (in thousands):

September 30, 2021December 31, 2020
Havre Pipeline Company, LLC$12,506 $13,219 
Canadian Montana Pipeline Corporation4,819 4,619 
NorthWestern Energy Solutions, Inc.3,276 2,018 
NorthWestern Services, LLC2,051 2,629 
Risk Partners Assurance, Ltd.1,205 1,248 
Total Investments in Subsidiary Companies$23,857 $23,733 
(5) Comprehensive Income

The following tables display the components of Other Comprehensive Income, after-tax, and the related tax effects (in thousands):

Three Months Ended
September 30, 2021September 30, 2020
Before-
Tax Amount
Tax
Expense (Benefit)
Net-of-
Tax Amount
Before-
Tax Amount
Tax
Expense (Benefit)
Net-of-
Tax Amount
Foreign currency translation adjustment$(1)$— $(1)$(2)$— $(2)
Reclassification of net income (loss) on derivative instruments153 (40)113 153 (40)113 
Postretirement medical liability adjustment(212)53 (159)— — — 
Other comprehensive income$(60)$13 $(47)$151 $(40)$111 
Nine Months Ended
September 30, 2021September 30, 2020
Before-
Tax Amount
Tax
Expense (Benefit)
Net-of-
Tax Amount
Before-
Tax Amount
Tax
Expense (Benefit)
Net-of-
Tax Amount
Foreign currency translation adjustment$(56)$— $(56)$90 $— $90 
Reclassification of net income (loss) on derivative instruments459 (120)339 459 (120)339 
Postretirement medical liability adjustment(636)160 (476)— — — 
Other comprehensive income$(233)$40 $(193)$549 $(120)$429 

Balances by classification included within accumulated other comprehensive income (AOCI) on the Balance Sheets are as follows, net of tax (in thousands):

September 30, 2021December 31, 2020
Foreign currency translation$1,445 $1,501 
Derivative instruments designated as cash flow hedges(8,240)(8,579)
Postretirement medical plans1,476 1,952 
Accumulated other comprehensive income$(5,319)$(5,126)

The following tables display the changes in AOCI by component, net of tax (in thousands):


Three Months Ended September 30, 2021
Affected Line Item in the Statements of Income
Interest Rate Derivative Instruments
Designated as Cash Flow Hedges
Postretirement Medical Plans
Foreign
Currency
Translation
Total
Beginning balance$(8,353)$1,635 $1,446 $(5,272)
Other comprehensive income before reclassifications— — (1)(1)
Amounts reclassified from AOCIInterest on long-term debt113 — — 113 
Amounts reclassified from AOCI— (159)— (159)
Net current-period other comprehensive income113 (159)(1)(47)
Ending balance$(8,240)$1,476 $1,445 $(5,319)
Three Months Ended September 30, 2020
Affected Line Item in the Statements of Income
Interest Rate Derivative Instruments
Designated as Cash Flow Hedges
Postretirement Medical Plans
Foreign
Currency
Translation
Total
Beginning balance$(8,805)$113 $1,505 $(7,187)
Other comprehensive income before reclassifications— — (2)(2)
Amounts reclassified from AOCIInterest on long-term debt113 — — 113 
Net current-period other comprehensive income113 — (2)111 
Ending balance$(8,692)$113 $1,503 $(7,076)

Nine Months Ended September 30, 2021
Affected Line Item in the Statements of Income
Interest Rate Derivative Instruments
Designated as Cash Flow Hedges
Postretirement Medical Plans
Foreign
Currency
Translation
Total
Beginning balance$(8,579)$1,952 $1,501 $(5,126)
Other comprehensive income before reclassifications— — (56)(56)
Amounts reclassified from AOCIInterest on long-term debt339 — — 339 
Amounts reclassified from AOCI— (476)— (476)
Net current-period other comprehensive income339 (476)(56)(193)
Ending balance$(8,240)$1,476 $1,445 $(5,319)
Nine Months Ended September 30, 2020
Affected Line Item in the Statements of Income
Interest Rate Derivative Instruments
Designated as Cash Flow Hedges
Postretirement Medical Plans
Foreign
Currency
Translation
Total
Beginning balance$(9,031)$113 $1,413 $(7,505)
Other comprehensive income before reclassifications— — 90 90 
Amounts reclassified from AOCIInterest on long-term debt339 — — 339 
Net current-period other comprehensive income339 — 90 429 
Ending balance$(8,692)$113 $1,503 $(7,076)
(6) Financing Activities

In March 2021, we issued and sold $100.0 million aggregate principal amount of Montana First Mortgage Bonds (the bonds) at a fixed interest rate of 1.00% maturing on March 26, 2024. The net proceeds were used to repay in full our outstanding $100.0 million term loan that was due April 2, 2021. We may redeem some or all of the bonds at any time in whole, or from time to time in part, at our option, on or after March 26, 2022, at a redemption price equal to 100% of the principal amount of the bonds to be redeemed, plus accrued and unpaid interest on the principal amount of the bonds being redeemed to, but excluding, the redemption date. The bonds are secured by our electric and natural gas assets in Montana and Wyoming.

In April 2021, we entered into an Equity Distribution Agreement with BofA Securities, Inc., CIBC World Markets Corp, Credit Suisse Securities (USA) LLC, and J.P. Morgan Securities LLC, collectively the sales agents, pursuant to which we may offer and sell shares of our common stock from time to time, having an aggregate gross sales price of up to $200.0 million, through an At-the-Market (ATM) offering program, including an equity forward sales component. During the three months ended September 30, 2021, we issued 1,040,085 shares of our common stock under the ATM program at an average price of $63.13, for net proceeds of $64.8 million, which is net of sales commissions and other fees paid of approximately $0.9 million. During the nine months ended September 30, 2021, we issued 1,919,394 shares of our common stock under the ATM program at an average price of $63.94, for net proceeds of $121.1 million, which is net of sales commissions and other fees paid of approximately $1.7 million.

On November 17, 2021, we announced a registered public offering of 6,074,767 shares of our common stock at a public offering price of $53.50 per share, for an issuance amount of $325 million. In conjunction with this offering, we granted the underwriters an option to purchase up to 911,215 additional shares, which was subsequently exercised in full, for an additional issuance amount of $48.8 million. Of the total 6,985,982 shares of common stock offered, we initially sold 1,401,869 shares, $75 million in gross proceeds, directly to the underwriters in the offering, with cash proceeds received at closing. The remaining 5,584,113 shares were sold under forward sales agreements which provide for settlement on a settlement date or dates to be specified at our discretion, but which is expected to occur on or prior to February 28, 2023. The forward sales agreements will be physically settled with common shares issued by us, unless we elect to settle the agreements in cash or to net share settle the agreements, subject to certain conditions. On a settlement date or dates, if we decide to physically settle the forward sales agreement, we will issue shares of common stock to the forward purchaser at the then-applicable forward sale price and receive issuance proceeds at that time. The forward sale price will initially be $51.8950 per share, which is subject to certain adjustments as specified in the forward sales agreements.

In July 2021, our two loans totaling $27.0 million associated with the New Market Tax Credit (NMTC) financing agreement were extinguished. These loans were satisfied with our $18.2 million investment in the VIE, investor forgiveness of $7.9 million for substantially all of the benefits derived from the tax credits, and cash payment of $0.9 million. In
accordance with our last rate case filing in the state of Montana, the portion of the loan forgiven was recorded as a reduction to the cost of the office building associated with the NMTC financing agreement. This cash payment is reflected within the financing activities section of our Statement of Cash Flows for the nine months ended September 30, 2021; however, the remaining reduction to Long-term debt, Other investments, and Utility plant are non-cash financing activities that are not reflected within our Statement of Cash Flows for the nine months ended September 30, 2021.
(7) Related Party Transactions

Accounts receivable from and payables to associated companies primarily include intercompany billings for direct charges, overhead, and income tax obligations. The following table reflects our accounts receivable from and accounts payable to associated companies (in thousands):

September 30, 2021December 31, 2020
Accounts Receivable from Associated Companies:
Havre Pipeline Company, LLC$3,286 $1,673 
NorthWestern Energy Solutions, Inc.71 61 
Risk Partners Assurance, Ltd.18 18 
$3,375 $1,752 
Accounts Payable to Associated Companies:
NorthWestern Services, LLC$1,824 $1,846 
Canadian Montana Pipeline Corporation2,030 1,776 
$3,854 $3,622 
(8) Employee Benefit Plans

We sponsor and/or contribute to pension and postretirement health care and life insurance benefit plans for eligible employees. Net periodic benefit cost (credit) for our pension and other postretirement plans consists of the following (in thousands):

Pension BenefitsOther Postretirement Benefits
Three Months Ended September 30, Three Months Ended September 30,
2021202020212020
Components of Net Periodic Benefit Cost (Credit)
Service cost$3,263 $2,779 $99 $93 
Interest cost4,596 5,710 75 123 
Expected return on plan assets(6,843)(6,541)(230)(246)
Amortization of prior service credit— — (459)(471)
Recognized actuarial loss (gain)1,228 1,257 (11)(15)
Net periodic benefit cost (credit)$2,244 $3,205 $(526)$(516)
Pension BenefitsOther Postretirement Benefits
Nine Months Ended September 30, Nine Months Ended September 30,
2021202020212020
Components of Net Periodic Benefit Cost (Credit)
Service cost$3,263 $8,337 $99 $278 
Interest cost4,596 17,130 75 369 
Expected return on plan assets(6,843)(19,622)(230)(738)
Amortization of prior service credit— — (459)(1,412)
Recognized actuarial loss (gain)1,228 3,771 (11)(45)
Net periodic benefit cost (credit)$2,244 $9,616 $(526)$(1,548)

We contributed $10.2 million to our pension plans during the nine months ended September 30, 2021. We expect to contribute an additional $1.0 million to our pension plans during the remainder of 2021.
(9) Commitments and Contingencies

ENVIRONMENTAL LIABILITIES AND REGULATION

Environmental Matters

The operation of electric generating, transmission and distribution facilities, and gas gathering, storage, transportation and distribution facilities, along with the development (involving site selection, environmental assessments, and permitting) and construction of these assets, are subject to extensive federal, state, and local environmental and land use laws and regulations. Our activities involve compliance with diverse laws and regulations that address emissions and impacts to the environment, including air and water, protection of natural resources, avian and wildlife. We monitor federal, state, and local environmental initiatives to determine potential impacts on our financial results. As new laws or regulations are implemented, our policy is to assess their applicability and implement the necessary modifications to our facilities or their operation to maintain ongoing compliance.

Our environmental exposure includes a number of components, including remediation expenses related to the cleanup of current or former properties, and costs to comply with changing environmental regulations related to our operations. At present, our environmental reserve, which relates primarily to the remediation of former manufactured gas plant sites owned by us or for which we are responsible, is estimated to range between $24.7 million to $30.4 million. As of September 30, 2021, we had a reserve of approximately $27.1 million, which has not been discounted. Environmental costs are recorded when it is probable we are liable for the remediation and we can reasonably estimate the liability. We use a combination of site investigations and monitoring to formulate an estimate of environmental remediation costs for specific sites. Our monitoring procedures and development of actual remediation plans depend not only on site specific information but also on coordination with the different environmental regulatory agencies in our respective jurisdictions; therefore, while remediation exposure exists, it may be many years before costs are incurred.

Over time, as costs become determinable, we may seek authorization to recover such costs in rates or seek insurance reimbursement as available and applicable; therefore, although we cannot guarantee regulatory recovery, we do not expect these costs to have a material effect on our consolidated financial position or results of operations.

Manufactured Gas Plants - Approximately $20.9 million of our environmental reserve accrual is related to the following manufactured gas plants.

South Dakota - A formerly operated manufactured gas plant located in Aberdeen, South Dakota, has been identified on the Federal Comprehensive Environmental Response, Compensation, and Liability Information System list as contaminated with coal tar residue. We are currently conducting feasibility studies, implementing remedial actions pursuant to work plans approved by the South Dakota Department of Agriculture and Natural Resources, and conducting ongoing monitoring and
operation and maintenance activities. As of September 30, 2021, the reserve for remediation costs at this site was approximately $7.8 million, and we estimate that approximately $2.8 million of this amount will be incurred through 2025.

Nebraska - We own sites in North Platte, Kearney, and Grand Island, Nebraska on which former manufactured gas facilities were located. We are currently working independently to fully characterize the nature and extent of potential impacts associated with these Nebraska sites. Our reserve estimate includes assumptions for site assessment and remedial action work. At present, we cannot determine with a reasonable degree of certainty the nature and timing of any risk-based remedial action at our Nebraska locations.

Montana - We own or have responsibility for sites in Butte, Missoula, and Helena, Montana on which former manufactured gas plants were located. The Butte and Helena sites, both listed as high priority sites on Montana’s state superfund list, were placed into the Montana Department of Environmental Quality (MDEQ) voluntary remediation program for cleanup due to soil and groundwater impacts. Soil and coal tar were removed at the sites in accordance with the MDEQ requirements. Groundwater monitoring is conducted semiannually at both sites. At this time, we cannot estimate with a reasonable degree of certainty the nature and timing of additional remedial actions and/or investigations, if any, at the Butte site.

In August 2016, the MDEQ sent us a Notice of Potential Liability and Request for Remedial Action regarding the Helena site. In October 2019, we submitted a third revised Remedial Investigation Work Plan (RIWP) for the Helena site addressing MDEQ comments. The MDEQ approved the RIWP in March 2020 and we expect work at the Helena site to continue into 2022.

MDEQ has indicated it expects to proceed in listing the Missoula site as a Montana superfund site. After researching historical ownership, we have identified another potentially responsible party with whom we have entered into an agreement allocating third-party costs to be incurred in addressing the site. The other party has assumed the lead role at the site and has submitted a voluntary remediation plan for the Missoula site to MDEQ. At this time, we cannot estimate with a reasonable degree of certainty the nature and timing of risk-based remedial action, if any, at the Missoula site.

Global Climate Change - National and international actions have been initiated to address global climate change and the contribution of greenhouse gas (GHG) including, most significantly, carbon dioxide (CO2). These actions include legislative proposals, Executive and Environmental Protection Agency (EPA) actions at the federal level, state level activity, investor activism and private party litigation relating to GHG emissions. Coal-fired plants have come under particular scrutiny due to their level of GHG emissions. We have joint ownership interests in four coal-fired electric generating plants, all of which are operated by other companies. We are responsible for our proportionate share of the capital and operating costs while being entitled to our proportionate share of the power generated.

While numerous bills have been introduced that address climate change from different perspectives, Congress has not passed any federal climate change legislation regarding GHG emissions from coal fired plants, and we cannot predict the timing or form of any potential legislation. In 2019, the EPA finalized the Affordable Clean Energy Rule (ACE), which repealed the 2015 Clean Power Plan (CPP) in regulating GHG emissions from coal-fired plants. The U.S. Court of Appeals for the District of Columbia Circuit issued an opinion on January 19, 2021, vacating the ACE and remanding it to EPA for further action. It is widely expected that the Biden Administration will develop an alternative plan for reducing GHG emissions from coal-fired plants, and in a memorandum dated February 12, 2021, EPA stated its belief that the January 19, 2021 opinion left neither the ACE nor the CPP rules in place.

We cannot predict whether or how GHG emission regulations will be applied to our plants, including any actions taken by the relevant state authorities. In addition, it is unclear how pending or future litigation relating to GHG matters will impact us. As GHG regulations are implemented, it could result in additional compliance costs impacting our future results of operations and financial position if such costs are not recovered through regulated rates. We will continue working with federal and state regulatory authorities, other utilities, and stakeholders to seek relief from any GHG regulations that, in our view, disproportionately impact customers in our region.
Future additional environmental requirements could cause us to incur material costs of compliance, increase our costs of procuring electricity, decrease transmission revenue and impact cost recovery. Technology to efficiently capture, remove and/or sequester such GHG emissions may not be available within a timeframe consistent with the implementation of any such requirements. Physical impacts of climate change also may present potential risks for severe weather, such as droughts, fires,
floods, ice storms and tornadoes, in the locations where we operate or have interests. These potential risks may impact costs for electric and natural gas supply and maintenance of generation, distribution, and transmission facilities.

Clean Air Act Rules and Associated Emission Control Equipment Expenditures - The EPA has proposed or issued a number of rules under different provisions of the Clean Air Act (CAA) that could require the installation of emission control equipment at the generation plants in which we have joint ownership. Air emissions at our thermal generating plants are managed by the use of emissions and combustion controls and monitoring, and sulfur dioxide allowances. These measures are anticipated to be sufficient to permit the facilities to continue to meet current air emissions compliance requirements.

Regional Haze Rules - In January 2017, the EPA published amendments to the requirements under the CAA for state plans for protection of visibility - regional haze rules. Among other things, these amendments revised the process and requirements for the state implementation plans and extended the due date for the next periodic comprehensive regional haze state implementation plan revisions from 2018 to 2021. In March 2017, we filed a Petition for Review of these amendments with the D.C. Circuit, which was consolidated with other petitions challenging the final rule. The D.C. Circuit has granted the EPA's request to hold the case in abeyance while the EPA considers further administrative action to revisit the rule.

The states of Montana, North Dakota and South Dakota are expected to develop and submit to EPA, for its approval, their respective State Implementation Plans (SIP) for Regional Haze compliance. While these states, among others, did not meet the EPA’s July 31, 2021 submission deadline, we still expect each state to submit its SIP in 2021. While no draft is available publicly, the Montana SIP could impact our interest in Colstrip Unit 4, by requiring additional controls. The draft North Dakota SIP does not require any additional controls at the Coyote generating facility. Similarly, the draft South Dakota SIP does not require any additional controls at the Big Stone generating facility. Until these SIPs are submitted and approved by EPA, the potential remains that installation of additional emissions controls might be required at these facilities.

Jointly Owned Plants - We have joint ownership in generation plants located in South Dakota, North Dakota, Iowa, and Montana that are or may become subject to the various regulations discussed above that have been or may be issued or proposed.

Other - We continue to manage equipment containing polychlorinated biphenyl (PCB) oil in accordance with the EPA's Toxic Substance Control Act regulations. We will continue to use certain PCB-contaminated equipment for its remaining useful life and will, thereafter, dispose of the equipment according to pertinent regulations that govern the use and disposal of such equipment.

We routinely engage the services of a third-party environmental consulting firm to assist in performing a comprehensive evaluation of our environmental reserve. Based upon information available at this time, we believe that the current environmental reserve properly reflects our remediation exposure for the sites currently and previously owned by us. The portion of our environmental reserve applicable to site remediation may be subject to change as a result of the following uncertainties:

We may not know all sites for which we are alleged or will be found to be responsible for remediation; and
Absent performance of certain testing at sites where we have been identified as responsible for remediation, we cannot estimate with a reasonable degree of certainty the total costs of remediation.

LEGAL PROCEEDINGS

Pacific Northwest Solar Litigation

Pacific Northwest Solar, LLC (PNWS) is a solar QF developer seeking to construct small solar facilities in Montana. We began negotiating with PNWS in early 2016 to purchase the output from 21 of its proposed facilities pursuant to our standard QF-1 Tariff, which is applicable to projects no larger than 3 MWs.

On June 16, 2016, however, the MPSC suspended the availability of the QF-1 Tariff standard rates for that category of solar projects, which included the projects proposed by PNWS. The MPSC exempted from the suspension any projects for which a QF had both submitted a signed power purchase agreement and had executed an interconnection agreement with us by June 16, 2016. Although we had signed four power purchase agreements with PNWS as of that date, we had not entered
into interconnection agreements with PNWS for any of those projects. As a result, none of the PNWS projects in Montana qualified for the exemption.

In November 2016, PNWS sued us in state court seeking unspecified damages for breach of contract and a judicial declaration that some or all of the 21 proposed power purchase agreements it had proposed to us were in effect despite the MPSC's Order. We removed the state lawsuit to the United States District Court for the District of Montana (Court).

PNWS also requested the MPSC to exempt its projects from the tariff suspension and allow those projects to receive the QF-1 tariff rate that had been in effect prior to the suspension. We joined in PNWS’s request for relief with respect to four of the projects, but the MPSC did not grant any of the relief requested by PNWS or us.

In August 2017, we entered into a non-monetary, partial settlement with PNWS in which PNWS amended its original complaint to limit its claims for enforcement and/or damages to only four of the 21 power purchase agreements. As a result, the damages sought by the plaintiff was reduced to approximately $8.0 million for the alleged breach of the four power purchase agreements. We participated in an unsuccessful mediation on January 24, 2019 and subsequent settlement efforts also have been unsuccessful.

After reviewing briefs submitted by the parties addressing key liability issues in the case, on August 31, 2021, the Court ruled that the four agreements are valid and enforceable contracts and that NorthWestern breached the agreements on June 16, 2016 by refusing to go forward with the projects in view of the MPSC's Orders. The Court has scheduled a jury trial to determine damages to begin on December 13, 2021.

Although damages could be as high as approximately $8.0 million, we believe the damages are significantly less than that amount due to the very early stage of development when NorthWestern advised PNWS that it could not go forward with the four projects. We may appeal the trial court's liability determinations to the U.S. Court of Appeals for the Ninth Circuit after the jury trial on damages has been concluded.

State of Montana - Riverbed Rents

On April 1, 2016, the State of Montana (State) filed a complaint on remand (the State’s Complaint) with the Montana First Judicial District Court (State District Court), naming us, along with Talen Montana, LLC (Talen) as defendants. The State claimed it owns the riverbeds underlying 10 of our, and formerly Talen’s, hydroelectric facilities (dams, along with reservoirs and tailraces) on the Missouri, Madison and Clark Fork Rivers, and seeks rents for Talen’s and our use and occupancy of such lands. The facilities at issue include the Hebgen, Madison, Hauser, Holter, Black Eagle, Rainbow, Cochrane, Ryan, and Morony facilities on the Missouri and Madison Rivers and the Thompson Falls facility on the Clark Fork River. We acquired these facilities from Talen in November 2014.

The litigation has a long prior history. In 2012, the United States Supreme Court issued a decision holding that the Montana Supreme Court erred in not considering a segment-by-segment approach to determine navigability and relying on present day recreational use of the rivers. It also held that what it referred to as the Great Falls Reach “at least from the head of the first waterfall to the foot of the last” was not navigable for title purposes, and thus the State did not own the riverbeds in that segment. The United States Supreme Court remanded the case to the Montana Supreme Court for further proceedings not inconsistent with its opinion. Following the 2012 remand, the case laid dormant for four years until the State’s Complaint was filed with the State District Court. On April 20, 2016, we removed the case from State District Court to the United States District Court for the District of Montana (Federal District Court). The State filed a motion to remand. Following briefing and argument, on October 10, 2017, the Federal District Court entered an order denying the State’s motion.

Because the State’s Complaint included a claim that the State owned the riverbeds in the Great Falls Reach, on October 16, 2017, we and Talen renewed our earlier-filed motions seeking to dismiss the portion of the State’s Complaint concerning the Great Falls Reach in light of the United States Supreme Court’s decision. On August 1, 2018, the Federal District Court granted the motions to dismiss the State’s Complaint as it pertains to approximately 8.2 miles of riverbed from “the head of the Black Eagle Falls to the foot of the Great Falls.” In particular, the dismissal pertained to the Black Eagle Dam, Rainbow Dam and reservoir, Cochrane Dam and reservoir, and Ryan Dam and reservoir. While the dismissal of these four facilities may be subject to appeal, that appeal would not likely occur until after judgment in the case. On February 12, 2019, the Federal District Court granted our motion to join the United States as a defendant to the litigation. As a result, on October 31, 2019, the State filed and served an Amended Complaint including the United States as a defendant and removing claims of ownership for the hydroelectric facilities on the Great Falls Reach, except for the Morony and the Black Eagle Developments.
We and Talen filed answers to the Amended Complaint on December 13, 2019, and the United States answered on February 5, 2020. The Federal District Court reset the trial date on the issue of navigability to January 4, 2022. The parties have filed various motions, including motions in limine and for partial summary judgment. Those motions are currently in the process of being briefed. Damages were bifurcated by agreement and will be tried separately, should the Federal District Court find any segments navigable.

We dispute the State’s claims and intend to vigorously defend the lawsuit. At this time, we cannot predict an outcome. If the Federal District Court determines the riverbeds are navigable under the remaining six facilities that were not dismissed and if it calculates damages as the State District Court did in 2008, we estimate the annual rents could be approximately $3.8 million commencing when we acquired the facilities in November 2014. We anticipate that any obligation to pay the State rent for use and occupancy of the riverbeds would be recoverable in rates from customers, although there can be no assurances that the MPSC would approve any such recovery.

Colstrip Arbitration and Litigation

As part of the settlement of litigation brought by the Sierra Club and the Montana Environmental Information Center against the owners and operator of Colstrip, the owners of Units 1 and 2 agreed to shut down those units no later than July 2022. In January 2020, the owners of Units 1 and 2 closed those two units. We do not have ownership in Units 1 and 2, and decisions regarding those units, including their shut down, were made by their respective owners. The six owners of Units 3 and 4 currently share the operating costs pursuant to the terms of an operating agreement among them, the Ownership and Operation Agreement (O&O Agreement). Costs of common facilities were historically shared among the owners of all four units. With the closure of Units 1 and 2, we have incurred additional operating costs with respect to our interest in Unit 4 and expect to experience a negative impact on our transmission revenue due to reduced amounts of energy transmitted across our transmission lines. We expect to incorporate any reduction in revenue in our next general electric rate filing, resulting in lower revenue credits to certain customers.

The remaining depreciable life of our investment in Colstrip Unit 4 is through 2042. Recovery of costs associated with the closure of the facility is subject to MPSC approval. Three of the joint owners of Units 3 and 4 are subject to regulation in Washington and in May 2019, the Washington state legislature enacted a statute mandating Washington electric utilities to “eliminate coal-fired resources from [their] allocation of electricity” on or before December 31, 2025, after which date they may no longer include their share of coal-fired resources in their regulated electric supply portfolio. As a result of the Washington legislation, four of the six joint owners of Units 3 and 4 requested the operator prepare a 2021 budget reflecting closure of Units 3 and 4 by 2025, and alternately a closure of Unit 3 by 2025 and a closure of Unit 4 by 2027. Differing viewpoints on closure dates delayed approval of the 2021 budget, until it was approved on March 22, 2021. We anticipate the annual budgeting process for Units 3 and 4 may raise similar efforts to tie budgeting to a closure date, resulting in future budgets that may not be sufficient to maintain the reliability of Units 3 and 4.

While we believe closure requires each owner’s consent, there are differences among the owners as to this issue under the O&O Agreement. On March 12, 2021, we initiated an arbitration under the O&O Agreement (the “Arbitration”), which seeks to resolve the primary issue of whether closure of Units 3 and 4 can be accomplished without each joint owner's consent and to clarify the obligations of the joint owners to continue to fund operations until all joint owners agree on closure.

The Arbitration has given rise to three lawsuits concerning the number of arbitrators, the venue and the applicable arbitration laws. The four joint owners from the Pacific Northwest assert the Arbitration must be conducted under the O&O Agreement, with one arbitrator, in Spokane County, Washington, and pursuant to the Washington Arbitration Act. The fifth joint owner asserts the Arbitration must be conducted per the terms of Montana Senate Bill 265 (SB 265), which requires the Arbitration be conducted, with three arbitrators, in Montana and pursuant to the Montana Uniform Arbitration Act. The three initiated lawsuits do not make direct financial demands, and instead, are intended to address issues related to process for the Arbitration.

Since the Arbitration was initiated, and despite the litigation, we have worked and continue to work with the other joint owners to arrive at an agreed upon process for the Arbitration.
Other Legal Proceedings

We are also subject to various other legal proceedings, governmental audits and claims that arise in the ordinary course of business. In the opinion of management, the amount of ultimate liability with respect to these other actions will not materially affect our financial position, results of operations, or cash flows.


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
STATEMENTS OF ACCUMULATED COMPREHENSIVE INCOME, COMPREHENSIVE INCOME, AND HEDGING ACTIVITIES
  1. Report in columns (b),(c),(d) and (e) the amounts of accumulated other comprehensive income items, on a net-of-tax basis, where appropriate.
  2. Report in columns (f) and (g) the amounts of other categories of other cash flow hedges.
  3. For each category of hedges that have been accounted for as "fair value hedges", report the accounts affected and the related amounts in a footnote.
  4. Report data on a year-to-date basis.
Line No.
Item
(a)
Unrealized Gains and Losses on Available-For-Sale Securities
(b)
Minimum Pension Liability Adjustment (net amount)
(c)
Foreign Currency Hedges
(d)
Other Adjustments
(e)
Other Cash Flow Hedges Interest Rate Swaps
(f)
Other Cash Flow Hedges [Specify]
(g)
Totals for each category of items recorded in Account 219
(h)
Net Income (Carried Forward from Page 116, Line 78)
(i)
Total Comprehensive Income
(j)
1
Balance of Account 219 at Beginning of Preceding Year
115,624
1,411,575
9,032,298
7,505,099
2
Preceding Quarter/Year to Date Reclassifications from Account 219 to Net Income
(d)
339,097
339,097
3
Preceding Quarter/Year to Date Changes in Fair Value
(b)
89,888
89,888
4
Total (lines 2 and 3)
89,888
339,097
428,985
101,664,427
102,093,412
5
Balance of Account 219 at End of Preceding Quarter/Year
115,624
1,501,463
8,693,201
7,076,114
6
Balance of Account 219 at Beginning of Current Year
1,954,756
1,499,267
8,580,168
5,126,145
7
Current Quarter/Year to Date Reclassifications from Account 219 to Net Income
(a)
476,230
(e)
339,098
137,132
8
Current Quarter/Year to Date Changes in Fair Value
(c)
56,025
56,025
9
Total (lines 7 and 8)
476,230
56,025
339,098
193,157
135,504,034
135,310,877
10
Balance of Account 219 at End of Current Quarter/Year
1,478,526
1,443,242
8,241,070
5,319,302


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: AccumulatedOtherComprehensiveIncomeLossMinimumPensionLiabilityAdjustmentReclassificationsToNetIncomeLoss
Postretirement medical liability adjustment.
(b) Concept: AccumulatedOtherComprehensiveIncomeLossOtherAdjustmentsToComprehensiveIncomeLossChangesInFairValue
Foreign currency translation adjustment.
(c) Concept: AccumulatedOtherComprehensiveIncomeLossOtherAdjustmentsToComprehensiveIncomeLossChangesInFairValue
Foreign currency translation adjustment.
(d) Concept: AccumulatedOtherComprehensiveIncomeLossOtherCashFlowHedgesInterestRateSwapsReclassificationsToNetIncomeLoss
Reclassification of net losses on derivative instruments.
(e) Concept: AccumulatedOtherComprehensiveIncomeLossOtherCashFlowHedgesInterestRateSwapsReclassificationsToNetIncomeLoss
Reclassification of net losses on derivative instruments.

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
SUMMARY OF UTILITY PLANT AND ACCUMULATED PROVISIONS FOR DEPRECIATION. AMORTIZATION AND DEPLETION

Report in Column (c) the amount for electric function, in column (d) the amount for gas function, in column (e), (f), and (g) report other (specify) and in column (h) common function.

Line No.
Classification
(a)
Total Company For the Current Year/Quarter Ended
(b)
Electric
(c)
Gas
(d)
Other (Specify)
(e)
Other (Specify)
(f)
Other (Specify)
(g)
Common
(h)
1
UtilityPlantAbstract
UTILITY PLANT
2
UtilityPlantInServiceAbstract
In Service
3
UtilityPlantInServiceClassified
Plant in Service (Classified)
6,201,471,422
4,800,589,380
1,159,610,902
(a)
1,523,174
239,747,966
4
UtilityPlantInServicePropertyUnderCapitalLeases
Property Under Capital Leases
42,525,576
(b)
40,209,537
(c)
2,316,039
5
UtilityPlantInServicePlantPurchasedOrSold
Plant Purchased or Sold
6
UtilityPlantInServiceCompletedConstructionNotClassified
Completed Construction not Classified
7
UtilityPlantInServiceExperimentalPlantUnclassified
Experimental Plant Unclassified
1,631,264
1,631,264
8
UtilityPlantInServiceClassifiedAndUnclassified
Total (3 thru 7)
6,245,628,262
4,802,220,644
1,159,610,902
1,523,174
40,209,537
2,316,039
239,747,966
9
UtilityPlantLeasedToOthers
Leased to Others
10
UtilityPlantHeldForFutureUse
Held for Future Use
5,492,985
5,463,119
29,866
11
ConstructionWorkInProgress
Construction Work in Progress
332,964,376
258,734,264
47,417,976
26,812,136
12
UtilityPlantAcquisitionAdjustment
Acquisition Adjustments
686,328,435
686,328,435
13
UtilityPlantAndConstructionWorkInProgress
Total Utility Plant (8 thru 12)
7,270,414,058
5,752,746,462
1,207,058,744
1,523,174
40,209,537
2,316,039
266,560,102
14
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
Accumulated Provisions for Depreciation, Amortization, & Depletion
2,639,723,924
2,029,491,115
503,934,316
1,037,038
30,659,752
74,601,703
15
UtilityPlantNet
Net Utility Plant (13 less 14)
4,630,690,134
3,723,255,347
703,124,428
486,136
9,549,785
2,316,039
191,958,399
16
DetailOfAccumulatedProvisionsForDepreciationAmortizationAndDepletionAbstract
DETAIL OF ACCUMULATED PROVISIONS FOR DEPRECIATION, AMORTIZATION AND DEPLETION
17
AccumulatedProvisionForDepreciationAmortizationAndDepletionUtilityPlantInServiceAbstract
In Service:
18
DepreciationUtilityPlantInService
Depreciation
2,387,334,621
1,853,906,296
453,087,379
1,037,038
30,659,752
48,644,156
19
AmortizationAndDepletionOfProducingNaturalGasLandAndLandRightsutilityPlantInService
Amortization and Depletion of Producing Natural Gas Land and Land Rights
44,115,960
44,115,960
20
AmortizationOfUndergroundStorageLandAndLandRightsutilityPlantInService
Amortization of Underground Storage Land and Land Rights
21
AmortizationOfOtherUtilityPlantUtilityPlantInService
Amortization of Other Utility Plant
55,293,427
22,604,903
6,730,977
25,957,547
22
DepreciationAmortizationAndDepletionUtilityPlantInService
Total in Service (18 thru 21)
2,486,744,008
1,876,511,199
503,934,316
1,037,038
30,659,752
74,601,703
23
DepreciationAmortizationAndDepletionUtilityPlantLeasedToOthersAbstract
Leased to Others
24
DepreciationUtilityPlantLeasedToOthers
Depreciation
25
AmortizationAndDepletionUtilityPlantLeasedToOthers
Amortization and Depletion
26
DepreciationAmortizationAndDepletionUtilityPlantLeasedToOthers
Total Leased to Others (24 & 25)
27
DepreciationAndAmortizationUtilityPlantHeldForFutureUseAbstract
Held for Future Use
28
DepreciationUtilityPlantHeldForFutureUse
Depreciation
29
AmortizationUtilityPlantHeldForFutureUse
Amortization
30
DepreciationAndAmortizationUtilityPlantHeldForFutureUse
Total Held for Future Use (28 & 29)
31
AbandonmentOfLeases
Abandonment of Leases (Natural Gas)
32
AmortizationOfPlantAcquisitionAdjustment
Amortization of Plant Acquisition Adjustment
152,979,916
152,979,916
33
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
Total Accum Prov (equals 14) (22,26,30,31,32)
2,639,723,924
2,029,491,115
503,934,316
1,037,038
30,659,752
74,601,703


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: UtilityPlantInServiceClassified
This column represents regulated propane.
(b) Concept: UtilityPlantInServicePropertyUnderCapitalLeases
This column represents the write-down of plant values associated with the 2002 acquistion of Montana Operations, and the reduction from fair value to regulated basis associated with the transfer of Colstrip Unit 4 to the regulated utility in 2009.
(c) Concept: UtilityPlantInServicePropertyUnderCapitalLeases
This column represents an electric default supply capacity and energy sales agreement classified as a capital lease.

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
Electric Plant In Service and Accum Provision For Depr by Function
  1. Report below the original cost of plant in service by function. In addition to Account 101, include Account 102, and Account 106. Report in column (b) the original cost of plant in service and in column(c) the accumulated provision for depreciation and amortization by function.
Line No.
Item
(a)
Plant in Service Balance at End of Quarter
(b)
Accumulated Depreciation And Amortization Balance at End of Quarter
(c)
1
Intangible Plant
27,043,932
9,334,645
2
Steam Production Plant
403,470,282
143,367,099
3
Nuclear Production Plant
4
Hydraulic Production - Conventional
565,681,348
143,756,500
5
Hydraulic Production - Pumped Storage
6
Other Production
489,849,695
134,249,021
7
Transmission
1,180,194,685
475,564,182
8
Distribution
1,968,371,789
875,759,028
9
Regional Transmission and Market Operation
10
General
167,608,913
94,480,724
11
TOTAL (Total of lines 1 through 10)
4,802,220,644
1,876,511,199


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
Transmission Service and Generation Interconnection Study Costs
  1. Report the particulars (details) called for concerning the costs incurred and the reimbursements received for performing transmission service and generator interconnection studies.
  2. List each study separately.
  3. In column (a) provide the name of the study.
  4. In column (b) report the cost incurred to perform the study at the end of period.
  5. In column (c) report the account charged with the cost of the study.
  6. In column (d) report the amounts received for reimbursement of the study costs at end of period.
  7. In column (e) report the account credited with the reimbursement received for performing the study.
Line No.
DescriptionOfStudyPerformed
Description
(a)
StudyCostsIncurred
Costs Incurred During Period
(b)
StudyCostsAccountCharged
Account Charged
(c)
StudyCostsReimbursements
Reimbursements Received During the Period
(d)
StudyCostsAccountReimbursed
Account Credited With Reimbursement
(e)
1
Transmission Studies
2
FAC Studies
36,243
219,077
3
SIS Studies
116,822
204,580
4
Line Interconnection Studies
19,368
48,195
20
Total
172,433
471,852
21
Generation Studies
22
FAC Studies
221,842
1,840,691
23
SIS Studies
190,989
1,097,097
24
FEA Studies
291,339
311,068
25
Optional Studies
78,605
176,440
39
Total
782,775
3,425,296
40 Grand Total
955,208
3,897,148


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
OTHER REGULATORY ASSETS (Account 182.3)
  1. Report below the particulars (details) called for concerning other regulatory assets, including rate order docket number, if applicable.
  2. Minor items (5% of the Balance in Account 182.3 at end of period, or amounts less than $100,000 which ever is less), may be grouped by classes.
  3. For Regulatory Assets being amortized, show period of amortization.
CREDITS
Line No.
DescriptionAndPurposeOfOtherRegulatoryAssets
Description and Purpose of Other Regulatory Assets
(a)
OtherRegulatoryAssets
Balance at Beginning of Current Quarter/Year
(b)
IncreaseDecreaseInOtherRegulatoryAssets
Debits
(c)
OtherRegulatoryAssetsWrittenOffAccountCharged
Written off During Quarter/Year Account Charged
(d)
OtherRegulatoryAssetsWrittenOffRecovered
Written off During the Period Amount
(e)
OtherRegulatoryAssets
Balance at end of Current Quarter/Year
(f)
1
Flow-through Income Taxes (Montana)
389,041,407
4,751,917
393,793,324
2
Excess Deferred Income Taxes (Montana)
56,460,168
1,000,676
55,459,492
3
Basin Creek Capital Lease (Montana)
6,102,756
189,259
5,913,497
4
BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization
1,028,101
2,296,036
1,792,461
1,531,676
5
Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization
8,258,474
1,326,465
2,514,111
7,070,828
6
FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129
4,708,040
177,447
4,530,593
7
FAS 112 (Montana) - Docket 93.6.24 and Docket 2009.9.129
5,532,753
5,532,753
8
CTC QF Over/Under Collections (Montana) - Docket 97.7.90 and Docket 2001.1.5; Annual Amortization
104,460
32,388
136,848
9
Compensated Absences (Montana) - Docket 97.11.219
12,957,652
879,731
12,077,921
10
Pension Plan (Montana)
133,613,969
329,175
133,943,144
11
Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637
538,458
8
538,466
12
Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568
4,509,979
279,878
290,157
4,499,700
13
Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88
1,438,859
143,886
1,294,973
14
Study of the Costs & Benefits of Customer Generators (Montana)
92,106
13,056
79,050
15
Asset Retirement Obligation (Montana)
11,922,582
549,468
12,472,050
16
Flow-through Income Taxes (South Dakota)
56,157,633
1,781,117
57,938,750
17
Excess Deferred Income Taxes (South Dakota)
7,163,755
36,441
7,127,314
18
Pension Plan (South Dakota)
5,611,370
5,611,370
19
Manufactured Gas Plants (South Dakota) - Docket NG 11-003
10,973,501
132,733
10,840,768
20
Field Inventory (South Dakota) - Docket EL 14-106
397,065
22,479
374,586
21
Asset Retirement Obligation (South Dakota)
635,801
71,896
707,697
22
Current Ad Valorem True-Up (South Dakota) - Docket GE 98-001
111,181
111,181
44
TOTAL
717,360,070
11,418,348
7,440,466
721,337,952


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
OTHER REGULATORY LIABILITIES (Account 254)
  1. Report below the particulars (details) called for concerning other regulatory liabilities, including rate order docket number, if applicable.
  2. Minor items (5% of the Balance in Account 254 at end of period, or amounts less than $100,000 which ever is less), may be grouped by classes.
  3. For Regulatory Liabilities being amortized, show period of amortization.
DEBITS
Line No.
Description and Purpose of Other Regulatory Liabilities
(a)
Balance at Beginning of Current Quarter/Year
(b)
Account Credited
(c)
Amount
(d)
Credits
(e)
Balance at End of Current Quarter/Year
(f)
1
Excess Deferred Income Taxes (Montana)
139,435,665
1,271,392
299,704
138,463,977
2
Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039
7,676,719
105,129
7,571,590
3
Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67
1,639,004
21,264
21,800
1,639,540
4
CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization
445,141
445,141
5
Excess Deferred Income Taxes (South Dakota)
21,688,287
251,644
21,436,643
6
Current Ad Valorem True-Up (South Dakota) - Docket GE98-001
72,571
155,773
394,088
310,886
7
Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003
591,342
99,965
491,377
8
Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003
155,000
155,000
9
Unbilled Revenues (South Dakota)
10,660,714
36,217,410
35,300,031
9,743,335
41 TOTAL
181,919,302
38,122,577
36,460,764
180,257,489


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
Electric Operating Revenues
  1. The following instructions generally apply to the annual version of these pages. Do not report quarterly data in columns (c), (e), (f), and (g). Unbilled revenues and MWH related to unbilled revenues need not be reported separately as required in the annual version of these pages.
  2. Report below operating revenues for each prescribed account, and manufactured gas revenues in total.
  3. Report number of customers, columns (f) and (g), on the basis of meters, in addition to the number of flat rate accounts; except that where separate meter readings are added for billing purposes, one customer should be counted for each group of meters added. The -average number of customers means the average of twelve figures at the close of each month.
  4. If increases or decreases from previous period (columns (c),(e), and (g)), are not derived from previously reported figures, explain any inconsistencies in a footnote.
  5. Disclose amounts of $250,000 or greater in a footnote for accounts 451, 456, and 457.2.
  6. Commercial and industrial Sales, Account 442, may be classified according to the basis of classification (Small or Commercial, and Large or Industrial) regularly used by the respondent if such basis of classification is not generally greater than 1000 Kw of demand. (See Account 442 of the Uniform System of Accounts. Explain basis of classification in a footnote.)
  7. See pages 108-109, Important Changes During Period, for important new territory added and important rate increase or decreases.
  8. For Lines 2,4,5,and 6, see Page 304 for amounts relating to unbilled revenue by accounts.
  9. Include unmetered sales. Provide details of such Sales in a footnote.
Line No.
Title of Account
(a)
Operating Revenues Year to Date Quarterly/Annual
(b)
Operating Revenues Previous year (no Quarterly)
(c)
MEGAWATT HOURS SOLD Year to Date Quarterly/Annual
(d)
MEGAWATT HOURS SOLD Amount Previous year (no Quarterly)
(e)
AVG.NO. CUSTOMERS PER MONTH Current Year (no Quarterly)
(f)
AVG.NO. CUSTOMERS PER MONTH Previous Year (no Quarterly)
(g)
1
SalesOfElectricityHeadingAbstract
Sales of Electricity
2
ResidentialSalesAbstract
(440) Residential Sales
300,017,778
2,520,184
3
CommercialAndIndustrialSalesAbstract
(442) Commercial and Industrial Sales
4
CommercialSalesAbstract
Small (or Comm.) (See Instr. 4)
330,240,716
2,892,937
5
IndustrialSalesAbstract
Large (or Ind.) (See Instr. 4)
51,870,063
537,613
6
PublicStreetAndHighwayLightingAbstract
(444) Public Street and Highway Lighting
12,425,311
34,694
7
OtherSalesToPublicAuthoritiesAbstract
(445) Other Sales to Public Authorities
626,631
5,265
8
SalesToRailroadsAndRailwaysAbstract
(446) Sales to Railroads and Railways
9
InterdepartmentalSalesAbstract
(448) Interdepartmental Sales
638,683
5,623
10
SalesToUltimateConsumersAbstract
TOTAL Sales to Ultimate Consumers
695,819,182
5,996,316
11
SalesForResaleAbstract
(447) Sales for Resale
17,877,192
673,562
12
SalesOfElectricityAbstract
TOTAL Sales of Electricity
713,696,374
6,669,878
13
ProvisionForRateRefundsAbstract
(Less) (449.1) Provision for Rate Refunds
3,234,161
14
RevenuesNetOfProvisionForRefundsAbstract
TOTAL Revenues Before Prov. for Refunds
716,930,535
6,669,878
15
OtherOperatingRevenuesAbstract
Other Operating Revenues
16
ForfeitedDiscounts
(450) Forfeited Discounts
323,233
17
MiscellaneousServiceRevenues
(451) Miscellaneous Service Revenues
166,678
18
SalesOfWaterAndWaterPower
(453) Sales of Water and Water Power
19
RentFromElectricProperty
(454) Rent from Electric Property
3,150,615
20
InterdepartmentalRents
(455) Interdepartmental Rents
21
OtherElectricRevenue
(456) Other Electric Revenues
(a)
10,660,218
22
RevenuesFromTransmissionOfElectricityOfOthers
(456.1) Revenues from Transmission of Electricity of Others
61,894,783
23
RegionalTransmissionServiceRevenues
(457.1) Regional Control Service Revenues
24
MiscellaneousRevenue
(457.2) Miscellaneous Revenues
25
OtherMiscellaneousOperatingRevenues
Other Miscellaneous Operating Revenues
25.1
OtherMiscellaneousOperatingRevenues
(Less) (449.1) Provision for Rate Refunds
4,711,242
26
OtherOperatingRevenues
TOTAL Other Operating Revenues
80,906,769
27
ElectricOperatingRevenues
TOTAL Electric Operating Revenues
797,837,304
Line12, column (b) includes $
of unbilled revenues.
Line12, column (d) includes $
MWH relating to unbilled revenues


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: OtherElectricRevenue
Q3
Other Electric Revenue
(456)
2021
Ancillary Services:
Scheduling, System Control and Dispatch $ 1,327,526 
Regulation and Frequency Response 885,355 
Energy Imbalance 5,447,113 
Other Transmission Revenue 813,563 
Low Income Housing 1,836,770 
Steam Sales 299,195 
Sale of Materials 49,281 
Miscellaneous 1,415 
$ 10,660,218  

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
REGIONAL TRANSMISSION SERVICE REVENUES (Account 457.1)
  1. The respondent shall report below the revenue collected for each service (i.e., control area administration, market administration, etc.) performed pursuant to a Commission approved tariff. All amounts separately billed must be detailed below.
Line No.
Description of Service
(a)
Balance at End of Quarter 1
(b)
Balance at End of Quarter 2
(c)
Balance at End of Quarter 3
(d)
Balance at End of Year
(e)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
TOTAL


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
ELECTRIC PRODUCTION, OTHER POWER SUPPLY EXPENSES, TRANSMISSION AND DISTRIBUTION EXPENSES

Report Electric production, other power supply expenses, transmission, regional market, and distribution expenses through the reporting period.

Line No.
Account
(a)
Year to Date Quarter
(b)
1
PowerProductionExpensesAbstract
1. POWER PRODUCTION AND OTHER SUPPLY EXPENSES
2
SteamPowerGenerationOperationsExpense
Steam Power Generation - Operation (500-509)
39,838,268
3
SteamPowerGenerationMaintenanceExpense
Steam Power Generation – Maintenance (510-515)
10,917,747
4
PowerProductionExpensesSteamPower
Total Power Production Expenses - Steam Power
50,756,015
5
NuclearPowerGenerationOperationsExpense
Nuclear Power Generation – Operation (517-525)
6
NuclearPowerGenerationMaintenanceExpense
Nuclear Power Generation – Maintenance (528-532)
7
PowerProductionExpensesNuclearPower
Total Power Production Expenses - Nuclear Power
8
HydraulicPowerGenerationOperationsExpense
Hydraulic Power Generation – Operation (535-540.1)
8,916,342
9
HydraulicPowerGenerationMaintenanceExpense
Hydraulic Power Generation – Maintenance (541-545.1)
2,009,540
10
PowerProductionExpensesHydraulicPower
Total Power Production Expenses - Hydraulic Power
10,925,882
11
RentsOtherPowerGeneration
Other Power Generation – Operation (546-550.1)
23,569,958
12
MaintenanceOfEnergyStorageEquipmentOtherPowerGeneration
Other Power Generation – Maintenance (551-554.1)
1,273,089
13
MaintenanceOfMiscellaneousOtherPowerGenerationPlant
Total Power Production Expenses - Other Power
24,843,047
14
OtherPowerSuplyExpensesAbstract
Other Power Supply Expenses
15
PurchasedPower
(555) Purchased Power
188,674,775
15.1
PowerPurchasedForStorageOperations
(555.1) Power Purchased for Storage Operations
16
SystemControlAndLoadDispatchingElectric
(556) System Control and Load Dispatching
164,739
17
OtherExpensesOtherPowerSupplyExpenses
(557) Other Expenses
42,334,594
18
OtherPowerSupplyExpense
Total Other Power Supply Expenses (line 15-17)
146,504,920
19
PowerProductionExpenses
Total Power Production Expenses (Total of lines 4, 7, 10, 13 and 18)
233,029,864
20
TransmissionExpensesAbstract
2. TRANSMISSION EXPENSES
21
TransmissionExpensesOperationAbstract
Transmission Operation Expenses
22
OperationSupervisionAndEngineeringElectricTransmissionExpenses
(560) Operation Supervision and Engineering
2,283,019
24
LoadDispatchReliability
(561.1) Load Dispatch-Reliability
574,812
25
LoadDispatchMonitorAndOperateTransmissionSystem
(561.2) Load Dispatch-Monitor and Operate Transmission System
669,948
26
LoadDispatchTransmissionServiceAndScheduling
(561.3) Load Dispatch-Transmission Service and Scheduling
862,458
27
SchedulingSystemControlAndDispatchServices
(561.4) Scheduling, System Control and Dispatch Services
28
ReliabilityPlanningAndStandardsDevelopment
(561.5) Reliability, Planning and Standards Development
65,232
29
TransmissionServiceStudies
(561.6) Transmission Service Studies
30
GenerationInterconnectionStudies
(561.7) Generation Interconnection Studies
31
ReliabilityPlanningAndStandardsDevelopmentServices
(561.8) Reliability, Planning and Standards Development Services
32
StationExpensesTransmissionExpense
(562) Station Expenses
1,098,543
32.1
OperationOfEnergyStorageEquipmentTransmissionExpense
(562.1) Operation of Energy Storage Equipment
33
OverheadLineExpense
(563) Overhead Lines Expenses
1,172,083
34
UndergroundLineExpensesTransmissionExpense
(564) Underground Lines Expenses
35
TransmissionOfElectricityByOthers
(565) Transmission of Electricity by Others
20,890,992
36
MiscellaneousTransmissionExpenses
(566) Miscellaneous Transmission Expenses
187,985
37
RentsTransmissionElectricExpense
(567) Rents
651,542
38
OperationSuppliesAndExpensesTransmissionExpense
(567.1) Operation Supplies and Expenses (Non-Major)
39
TransmissionOperationExpense
TOTAL Transmission Operation Expenses (Lines 22 - 38)
28,456,614
40
TransmissionMaintenanceAbstract
Transmission Maintenance Expenses
41
MaintenanceSupervisionAndEngineeringElectricTransmissionExpenses
(568) Maintenance Supervision and Engineering
412,428
42
MaintenanceOfStructuresTransmissionExpense
(569) Maintenance of Structures
19,665
43
MaintenanceOfComputerHardwareTransmission
(569.1) Maintenance of Computer Hardware
888,801
44
MaintenanceOfComputerSoftwareTransmission
(569.2) Maintenance of Computer Software
1,994
45
MaintenanceOfCommunicationEquipmentElectricTransmission
(569.3) Maintenance of Communication Equipment
70,467
46
MaintenanceOfMiscellaneousRegionalTransmissionPlant
(569.4) Maintenance of Miscellaneous Regional Transmission Plant
47
MaintenanceOfStationEquipmentTransmission
(570) Maintenance of Station Equipment
523,109
47.1
MaintenanceOfEnergyStorageEquipmentTransmission
(570.1) Maintenance of Energy Storage Equipment
48
MaintenanceOfOverheadLinesTransmission
(571) Maintenance of Overhead Lines
2,832,628
49
MaintenanceOfUndergroundLinesTransmission
(572) Maintenance of Underground Lines
50
MaintenanceOfMiscellaneousTransmissionPlant
(573) Maintenance of Miscellaneous Transmission Plant
51
MaintenanceOfTransmissionPlant
(574) Maintenance of Transmission Plant
52
TransmissionMaintenanceExpenseElectric
TOTAL Transmission Maintenance Expenses (Lines 41 – 51)
4,749,092
53
TransmissionExpenses
Total Transmission Expenses (Lines 39 and 52)
33,205,706
54
RegionalMarketExpensesAbstract
3. REGIONAL MARKET EXPENSES
55
RegionalMarketExpensesOperationAbstract
Regional Market Operation Expenses
56
OperationSupervision
(575.1) Operation Supervision
57
DayAheadAndRealTimeMarketAdministration
(575.2) Day-Ahead and Real-Time Market Facilitation
298,703
58
TransmissionRightsMarketAdministration
(575.3) Transmission Rights Market Facilitation
59
CapacityMarketAdministration
(575.4) Capacity Market Facilitation
60
AncillaryServicesMarketAdministration
(575.5) Ancillary Services Market Facilitation
85,343
61
MarketMonitoringAndCompliance
(575.6) Market Monitoring and Compliance
42,672
62
MarketFacilitationMonitoringAndComplianceServices
(575.7) Market Facilitation, Monitoring and Compliance Services
63
RegionalMarketOperationExpense
Regional Market Operation Expenses (Lines 55 - 62)
426,718
64
RegionalMarketExpensesMaintenanceAbstract
Regional Market Maintenance Expenses
65
MaintenanceOfStructuresAndImprovementsRegionalMarketExpenses
(576.1) Maintenance of Structures and Improvements
66
MaintenanceOfComputerHardware
(576.2) Maintenance of Computer Hardware
67
MaintenanceOfComputerSoftware
(576.3) Maintenance of Computer Software
68
MaintenanceOfCommunicationEquipmentRegionalMarketExpenses
(576.4) Maintenance of Communication Equipment
69
MaintenanceOfMiscellaneousMarketOperationPlant
(576.5) Maintenance of Miscellaneous Market Operation Plant
70
RegionalMarketMaintenanceExpense
Regional Market Maintenance Expenses (Lines 65-69)
71
RegionalMarketExpenses
TOTAL Regional Control and Market Operation Expenses (Lines 63,70)
426,718
72
DistributionExpensesAbstract
4. DISTRIBUTION EXPENSES
73
DistributionOperationExpensesElectric
Distribution Operation Expenses (580-589)
12,157,435
74
DistributionMaintenanceExpenseElectric
Distribution Maintenance Expenses (590-598)
13,869,627
75
DistributionExpenses
Total Distribution Expenses (Lines 73 and 74)
26,027,062


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
Electric Customer Accts, Service, Sales, Admin and General Expenses

Report the amount of expenses for customer accounts, service, sales, and administrative and general expenses year to date.

Line No.
Account
(a)
Year to Date Quarter
(b)
-
CustomerAccountsExpensesOperationsAbstract
Operation
1
CustomerAccountExpenses
(901-905) Customer Accounts Expenses
6,823,309
2
CustomerServiceAndInformationExpenses
(907-910) Customer Service and Information Expenses
3,872,154
3
SalesExpenses
(911-917) Sales Expenses
217,050
4
AdministrativeAndGeneralExpensesAbstract
8. ADMINISTRATIVE AND GENERAL EXPENSES
5
AdministrativeAndGeneralExpensesOperationAbstract
Operation
6
AdministrativeAndGeneralSalaries
(920) Administrative and General Salaries
25,823,936
7
OfficeSuppliesAndExpenses
(921) Office Supplies and Expenses
8,947,690
8
AdministrativeExpensesTransferredCredit
(Less) (922) Administrative Expenses Transferred-Credit
4,736,037
9
OutsideServicesEmployed
(923) Outside Services Employed
6,464,280
10
PropertyInsurance
(924) Property Insurance
2,331,962
11
InjuriesAndDamages
(925) Injuries and Damages
7,950,324
12
EmployeePensionsAndBenefits
(926) Employee Pensions and Benefits
16,043,099
13
FranchiseRequirements
(927) Franchise Requirements
14
RegulatoryCommissionExpenses
(928) Regulatory Commission Expenses
1,969,620
15
DuplicateChargesCredit
(929) (Less) Duplicate Charges-Cr.
16
GeneralAdvertisingExpenses
(930.1) General Advertising Expenses
20,346
17
MiscellaneousGeneralExpenses
(930.2) Miscellaneous General Expenses
10,666,863
18
RentsAdministrativeAndGeneralExpense
(931) Rents
1,135,711
19
AdministrativeAndGeneralOperationExpense
TOTAL Operation (Total of lines 6 thru 18)
76,617,794
20
AdministrativeAndGeneralExpensesMaintenanceAbstract
Maintenance
21
MaintenanceOfGeneralPlant
(935) Maintenance of General Plant
1,427,372
22
AdministrativeAndGeneralExpenses
TOTAL Administrative and General Expenses (Total of lines 19 and 21)
78,045,166


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
TRANSMISSION OF ELECTRICITY FOR OTHERS (Account 456.1) (Including transactions referred to as "wheeling")
  1. Report all transmission of electricity, i.e., wheeling, provided for other electric utilities, cooperatives, other public authorities, qualifying facilities, non-traditional utility suppliers and ultimate customers for the quarter.
  2. Use a separate line of data for each distinct type of transmission service involving the entities listed in column (a), (b) and (c).
  3. Report in column (a) the company or public authority that paid for the transmission service. Report in column (b) the company or public authority that the energy was received from and in column (c) the company or public authority that the energy was delivered to. Provide the full name of each company or public authority. Do not abbreviate or truncate name or use acronyms. Explain in a footnote any ownership interest in or affiliation the respondent has with the entities listed in columns (a), (b) or (c).
  4. In column (d) enter a Statistical Classification code based on the original contractual terms and conditions of the service as follows: FNO - Firm Network Service for Others, FNS - Firm Network Transmission Service for Self, LFP - "Long-Term Firm Point to Point Transmission Service, OLF - Other Long-Term Firm Transmission Service, SFP - Short-Term Firm Point to Point Transmission Reservation, NF - non-firm transmission service, OS - Other Transmission Service and AD - Out-of-Period Adjustments. Use this code for any accounting adjustments or "true-ups" for service provided in prior reporting periods. Provide an explanation in a footnote for each adjustment. See General Instruction for definitions of codes.
  5. In column (e), identify the FERC Rate Schedule or Tariff Number, On separate lines, list all FERC rate schedules or contract designations under which service, as identified in column (d), is provided.
  6. Report receipt and delivery locations for all single contract path, "point to point" transmission service. In column (f), report the designation for the substation, or other appropriate identification for where energy was received as specified in the contract. In column (g) report the designation for the substation, or other appropriate identification for where energy was delivered as specified in the contract.
  7. Report in column (h) the number of megawatts of billing demand that is specified in the firm transmission service contract. Demand reported in column (h) must be in megawatts. Footnote any demand not stated on a megawatts basis and explain.
  8. Report in column (i) and (j) the total megawatthours received and delivered.
  9. In column (k) through (n), report the revenue amounts as shown on bills or vouchers. In column (k), provide revenues from demand charges related to the billing demand reported in column (h). In column (I), provide revenues from energy charges related to the amount of energy transferred. In column (m), provide the total revenues from all other charges on bills or vouchers rendered, including out of period adjustments. Explain in a footnote all components of the amount shown in column (m). Report in column (n) the total charge shown on bills rendered to the entity Listed in column (a). If no monetary settlement was made, enter zero (11011) in column (n). Provide a footnote explaining the nature of the non-monetary settlement, including the amount and type of energy or service rendered.
  10. The total amounts in columns (i) and (j) must be reported as Transmission Received and Transmission Delivered for annual report purposes only on Page 401, Lines 16 and 17, respectively.
  11. Footnote entries and provide explanations following all required data.
TRANSFER OF ENERGY REVENUE FROM TRANSMISSION OF ELECTRICITY FOR OTHERS
Line No.
PaymentByCompanyOrPublicAuthority
Payment By (Company of Public Authority) (Footnote Affiliation)
(a)
TransmissionEnergyReceivedFromCompanyOrPublicAuthorityName
Energy Received From (Company of Public Authority) (Footnote Affiliation)
(b)
TransmissionEnergyDeliveredToCompanyOrPublicAuthorityName
Energy Delivered To (Company of Public Authority) (Footnote Affiliation)
(c)
StatisticalClassificationCode
Statistical Classification
(d)
RateScheduleTariffNumber
Ferc Rate Schedule of Tariff Number
(e)
TransmissionPointOfReceipt
Point of Receipt (Substation or Other Designation)
(f)
TransmissionPointOfDelivery
Point of Delivery (Substation or Other Designation)
(g)
BillingDemand
Billing Demand (MW)
(h)
TransmissionOfElectricityForOthersEnergyReceived
Megawatt Hours Received
(i)
TransmissionOfElectricityForOthersEnergyDelivered
Megawatt Hours Delivered
(j)
Demand Charges ($)
(k)
Energy Charges ($)
(l)
Other Charges ($)
(m)
RevenuesFromTransmissionOfElectricityForOthers
Total Revenues ($) (k+l+m)
(n)
1
MONTANA CHOICE TRANSMISSION
2
Ash Grove Cement
Energy Keepers Inc.
Ash Grove Cement
Kerr
Clancy, MT
7
11,077
11,077
53,238
53,238
3
Aspen Air U.S., LLC
Talen Energy
Aspen Air Corporation
Colstrip
Billings, MT
11
13,372
13,372
59,188
59,188
4
Barretts Minerals, Inc.
Energy Keepers inc.
Barretts Minerals, Inc.
Kerr
Dillon, MT
6
7,370
7,370
45,008
45,008
5
Beartooth Electric Cooperative, Inc.
WAPA
Beartooth Electric Cooperative, Inc.
Fort Peck
Various in Montana
18
22,003
22,003
170,778
170,778
6
Benefis Health Systems
Energy Keepers inc.
Benefis Health Systems
Kerr
Various in Montana
7
9,844
9,844
60,598
60,598
7
Big Horn County Electric Coop. Inc.
WAPA
Big Horn County Electric Coop. Inc.
Various & Great Falls
Various in Montana
18
21,450
21,450
146,127
146,127
8
Bonneville Power Administration
BPA
Bonneville Power Administration
BPAT.NWMT
Various in Montana
185
239,599
239,599
1,726,946
1,726,946
9
Basin Electric Power Cooperative
Morgan Stanley, Talen & WAPA
Basin Electric Power Cooperative
Various in Montana
Various NWMT & WAUW
181
229,340
229,340
1,604,220
1,604,220
10
Basin Electric Power Cooperative
Basin Electric & WAPA
Basin Electric Power Cooperative
Crossover
Various NWMT & WAUW
15
20,138
20,138
144,816
144,816
11
CHS, Inc.
Morgan Stanley
CHS, Inc.
MATL.NWMT
Various in Montana
58
91,077
91,077
519,593
519,593
12
City of Great Falls
Energy Keepers Inc.
City of Great Falls
Kerr
Various in Montana
6
6,734
6,734
34,170
34,170
13
Talen Montana, LLC
Avista Energy
Colstrip Steam Electric Station
Colstrip
Nichols Pump Sub
10
10,435
10,435
45,828
45,828
14
Atlas Power, LLC
Tenaska
Atlas Power, LLC
BPAT.NWMT
Butte, MT
75
33,619
33,619
168,113
168,113
15
Phillips 66 Company
Shell Energy
Phillips 66 Company
BPAT.NWMT
Various in Montana
70
120,442
120,442
727,610
727,610
16
ExxonMobil Corporation
Talen Energy
ExxonMobil Corporation
Colstrip
Billings, MT
35
62,448
62,448
368,893
368,893
17
General Mills Operations, LLC
Talen Energy
General Mills Operations, LLC
Colstrip
Great Falls, MT
4
4,833
4,833
27,849
27,849
18
Great Falls Public Schools
Energy Keepers Inc.
Great Falls Public Schools
Kerr
Great Falls, MT
3
2,008
2,008
16,860
16,860
19
GCC Three Forks, LLC
Energy Keepers Inc.
GCC Three Forks, LLC
Kerr
Three Forks, MT
8
11,483
11,483
59,063
59,063
20
Magris Talc USA, Inc.
Energy Keepers Inc.
Imerys Talc America, Inc.
Kerr
Three Forks, MT
6
7,197
7,197
51,523
51,523
21
Suiza Dairy Group, LLC
Talen Energy
Suiza Dairy Group, LLC
Colstrip
Various in Montana
2
1,773
1,773
10,695
10,695
22
Calumet Refining, LLC
Talen Energy
Calumet Montana Refining Company, Inc.
Colstrip
Great Falls, MT
25
29,863
29,863
166,548
166,548
23
Montana Resources
Talen Energy & Energy Keepers, Inc.
Montana Resources
Colstrip & Kerr
Butte, MT
50
92,106
92,106
554,912
554,912
24
REC Silicon Company
Morgan Stanley
REC Silicon Company
Hardin
Butte, MT
117
93,462
93,462
735,627
735,627
25
Roseburg Forest Products Company
Talen Energy
Roseburg Forest Products Company
Colstrip
Missoula, MT
8
11,037
11,037
81,639
81,639
26
Sibanye-Stillwater
Energy Keepers Inc.
Stillwater Mining Company
Kerr
Various in Montana
46
70,965
70,965
409,746
409,746
27
Town of Philipsburg
Town of Philipsburg
Town of Philipsburg
Philipsburg Substation
Philipsburg, MT
0
112
112
1,219
1,219
28
Western Area Power Administration
WAPA
Western Area Power Administration
Crossover
Various NWMT & WAUW
4
2
2
8,222
8,222
29
Montana State University - Bozeman
WAPA
Montana State University - Bozeman
Fort Peck West
Great Falls, MT
4
3,491
3,491
27,431
27,431
30
Western Area Power Administration
WAPA
Malmstrom Air Force Base
Fort Peck West
Great Falls, MT
4
2,418
2,418
12,825
12,825
31
MONTANA POINT-TO-POINT
32
Avista Corporation
AVISTA
AVISTA
COLSTRIP
AVAT.NMWT
0
18,328
18,328
107,769
107,769
33
Avista Corporation
AVISTA
AVISTA
COLSTRIP
AVAT.NMWT
0
16,896
16,896
99,264
99,264
34
Avista Corporation
AVISTA
NWMT
AVAT.NWMT
COLSTRIP
0
190
190
1,117
1,117
35
Avista Corporation
AVISTA
NWMT
AVAT.NWMT
NWMT.SYSTEM
0
270
270
1,588
1,588
36
Avista Corporation
NWMT
BPA
COLSTRIP
BPAT.NWMT
0
2,323
2,323
13,659
13,659
37
Avista Corporation
NWMT
Pacificorp
COLSTRIP
BRDY
0
680
680
3,998
3,998
38
Basin Electric Power Cooperative
NWMT
Pacificorp
COLSTRIP
YTP
0
71
71
417
417
39
Basin Electric Power Cooperative
NWMT
WAPA
COLSTRIP
GREATFALLS
0
22
22
129
129
40
Basin Electric Power Cooperative
Pacificorp
NWMT
YTP
NWMT.SYSTEM
0
118
118
694
694
41
Basin Electric Power Cooperative
Pacificorp
WAPA
YTP
CROSSOVER
0
400
400
2,352
2,352
42
Basin Electric Power Cooperative
Pacificorp
WAPA
YTP
GREATFALLS
0
795
795
4,675
4,675
43
Basin Electric Power Cooperative
WAPA
NWMT
CROSSOVER
NWMT.SYSTEM
0
648
648
3,807
3,807
44
Basin Electric Power Cooperative
WAPA
Pacificorp
CROSSOVER
YTP
0
5
5
29
29
45
Basin Electric Power Cooperative
WAPA
WAPA
CROSSOVER
GREATFALLS
31
68,448
68,448
397,529
397,529
46
Basin Electric Power Cooperative
WAPA
WAPA
CROSSOVER
GREATFALLS
0
332
332
1,952
1,952
47
Bonneville Power Administration
BPA
NWMT
BPAT.NWMT
NWMT.SYSTEM
0
24,521
24,521
144,183
144,183
48
Bonneville Power Administration
BPA
Pacificorp
BPAT.NWMT
YTP
0
6
6
35
35
49
Bonneville Power Administration
BPA
WAPA
BPAT.NWMT
GREATFALLS
0
739
739
4,345
4,345
50
Brookfield Energy Marketing LP
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
75
75
441
441
51
Brookfield Energy Marketing LP
NWMT
WAPA
COLSTRIP
CROSSOVER
0
25
25
147
147
52
Brookfield Energy Marketing LP
Pacificorp
BPA
YTP
BPAT.NWMT
0
104
104
612
612
53
Capital Power Energy Marketing, Inc.
BPA
MATL
BPAT.NWMT
MATL.NWMT
0
630
630
3,704
3,704
54
Capital Power Energy Marketing, Inc.
BPA
NWMT
BPAT.NWMT
NWMT.SYSTEM
0
35
35
206
206
55
Capital Power Energy Marketing, Inc.
MATL
BPAT
MATL.NWMT
BPAT.NWMT
0
2,020
2,020
11,878
11,878
56
Cycle Power Partners LLC
NWMT
Pacificorp
HORSESHOE
BRDY
0
18
18
106
106
57
Cycle Power Partners LLC
NWMT
Pacificorp
HORSESHOE
JEFF
0
2,193
2,193
12,895
12,895
58
Dynasty Power Inc.
AVISTA
Pacificorp
AVAT.NWMT
YTP
0
140
140
823
823
59
Dynasty Power Inc.
BPA
NWMT
BPAT.NWMT
MATL.NWMT
0
405
405
2,381
2,381
60
Dynasty Power Inc.
BPA
Pacificorp
BPAT.NWMT
JEFF
0
415
415
2,440
2,440
61
Dynasty Power Inc.
BPA
Pacificorp
BPAT.NWMT
YTP
0
942
942
5,536
5,536
62
Dynasty Power Inc.
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
1,662
1,662
9,773
9,773
63
Dynasty Power Inc.
NWMT
BPAT
MATL.NWMT
BPAT.NWMT
0
200
200
1,176
1,176
64
Dynasty Power Inc.
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
235
235
1,382
1,382
65
Dynasty Power Inc.
Pacificorp
BPA
BRDY
BPAT.NWMT
0
155
155
911
911
66
Dynasty Power Inc.
Pacificorp
BPA
YTP
BPAT.NWMT
0
7,881
7,881
46,340
46,340
67
Dynasty Power Inc.
Pacificorp
NWMT
BRDY
MATL.NWMT
0
522
522
3,069
3,069
68
Dynasty Power Inc.
Pacificorp
Pacificorp
YTP
BRDY
0
1,425
1,425
8,379
8,379
69
Dynasty Power Inc.
Pacificorp
Pacificorp
YTP
JEFF
0
138
138
811
811
70
Dynasty Power Inc.
Pacificorp
WAPA
YTP
CROSSOVER
0
52
52
306
306
71
Dynasty Power Inc.
WAPA
AVISTA
CROSSOVER
AVAT.NWMT
0
919
919
5,404
5,404
72
Dynasty Power Inc.
WAPA
AVISTA
CROSSOVER
AVAT.NWMT
0
1,800
1,800
10,575
10,575
73
Dynasty Power Inc.
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
175
175
1,029
1,029
74
Dynasty Power Inc.
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
600
600
3,525
3,525
75
Dynasty Power Inc.
WAPA
Pacificorp
CROSSOVER
YTP
0
34
34
200
200
76
EDF Trading North America, LLC
AVISTA
AVISTA
COLSTRIP
AVAT.NWMT
0
57
57
335
335
77
EDF Trading North America, LLC
AVISTA
BPA
AVAT,NWMT
BPAT.NWMT
0
9
9
53
53
78
EDF Trading North America, LLC
AVISTA
NWMT
AVAT,NWMT
COLSTRIP
0
934
934
5,492
5,492
79
EDF Trading North America, LLC
AVISTA
NWMT
AVAT,NWMT
GTFALLSNWMT
0
42
42
247
247
80
EDF Trading North America, LLC
AVISTA
NWMT
AVAT,NWMT
NWMT.SYSTEM
0
641
641
3,769
3,769
81
EDF Trading North America, LLC
AVISTA
Pacificorp
AVAT,NWMT
YTP
0
165,600
165,600
961,875
961,875
82
EDF Trading North America, LLC
BPA
NWMT
BPAT.NWMT
COLSTRIP
0
1,070
1,070
6,292
6,292
83
EDF Trading North America, LLC
BPA
Pacificorp
BPAT.NWMT
BRDY
0
25
25
147
147
84
EDF Trading North America, LLC
NWMT
BPAT
COLSTRIP
BPAT.NWMT
0
4,944
4,944
29,071
29,071
85
EDF Trading North America, LLC
NWMT
MATL.NWMT
COLSTRIP
MATL.NWMT
0
120
120
706
706
86
EDF Trading North America, LLC
NWMT
NWMT
COLSTRIP
COLSTRIP
0
144
144
847
847
87
EDF Trading North America, LLC
NWMT
Pacificorp
COLSTRIP
YTP
0
55,200
55,200
320,625
320,625
88
EDF Trading North America, LLC
Pacificcorp
NWMT
BRDY
COLSTRIP
0
63
63
370
370
89
Energy Keepers, Inc
BPA
NWMT
BPAT.NWMT
NWMT.SYSTEM
0
4
4
24
24
90
Energy Keepers, Inc
BPA
Pacificorp
BPAT.NWMT
YTP
0
110,400
110,400
641,250
641,250
91
Energy Keepers, Inc
NWMT
AVA
COLSTRIP
AVAT.NWMT
0
384
384
2,256
2,256
92
Energy Keepers, Inc
NWMT
BPA
KERR
BPAT.NWMT
40
88,320
88,320
512,940
512,940
93
Energy Keepers, Inc
NWMT
BPA
KERR
BPAT.NWMT
0
24
24
141
141
94
Energy Keepers, Inc
NWMT
BPA
KERR
BPAT.NWMT
12
26,496
26,496
66,414
66,414
95
Energy Keepers, Inc
NWMT
Pacificorp
KERR
BRDY
0
25
25
96
Energy Keepers, Inc
NWMT
Pacificorp
COLSTRIP
BRDY
0
1,171
1,171
6,885
6,885
97
Guzman Energy, LLC
AVISTA
Pacificorp
AVAT.NWMT
YTP
0
5
5
29
29
98
Guzman Energy, LLC
AVISTA
Pacificorp
AVAT.NWMT
YTP
0
110,400
110,400
641,250
641,250
99
Guzman Energy, LLC
BPA
Pacificorp
BPAT.NWMT
YTP
0
167
167
982
982
100
Guzman Energy, LLC
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
95
95
559
559
101
Guzman Energy, LLC
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
18,650
18,650
109,175
109,175
102
Guzman Energy, LLC
Pacificorp
BPA
YTP
BPAT.NWMT
0
1,135
1,135
6,672
6,672
103
Guzman Energy, LLC
Pacificorp
BPA
YTP
BPAT.NWMT
0
22,775
22,775
135,075
135,075
104
Guzman Energy, LLC
Pacificorp
Pacificorp
YTP
BRDY
0
80
80
470
470
105
Idaho Power Company
Pacificorp
Idaho
JEFF
TNDY
0
383
383
2,252
2,252
106
Idaho Power Company
Pacificorp
Idaho
JEFF
TNDY
0
2,870
2,870
16,920
16,920
107
Macquarie Energy LLC
AVISTA
Pacificorp
AVAT.NWMT
JEFF
0
150
150
882
882
108
Macquarie Energy LLC
BPA
NWMT
BPAT.NWMT
NWMT.SYSTEM
0
74,400
74,400
427,500
427,500
109
Macquarie Energy LLC
BPA
Pacificorp
BPAT.NWMT
JEFF
0
3,124
3,124
18,369
18,369
110
Macquarie Energy LLC
BPA
Pacificorp
BPAT.NWMT
JEFF
0
156,768
156,768
910,575
910,575
111
Macquarie Energy LLC
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
275
275
1,617
1,617
112
Macquarie Energy LLC
NWMT
AVISTA
MATL.NWMT
AVAT.NWMT
0
219
219
1,288
1,288
113
Macquarie Energy LLC
NWMT
AVISTA
MATL.NWMT
AVAT.NWMT
0
1,680
1,680
9,870
9,870
114
Macquarie Energy LLC
NWMT
BPA
MATL.NWMT
BPAT.NWMT
0
728
728
4,281
4,281
115
Macquarie Energy LLC
NWMT
BPA
COLSTRIP
BPAT.NWMT
0
576
576
3,384
3,384
116
Macquarie Energy LLC
NWMT
BPA
MATL.NWMT
BPAT.NWMT
0
11,760
11,760
69,090
69,090
117
Macquarie Energy LLC
NWMT
Pacificorp
BGI
JEFF
0
280
280
1,646
1,646
118
Macquarie Energy LLC
NWMT
Pacificorp
COLSTRIP
BRDY
0
8
8
47
47
119
Macquarie Energy LLC
NWMT
Pacificorp
COLSTRIP
JEFF
0
937
937
5,509
5,509
120
Macquarie Energy LLC
NWMT
Pacificorp
JUDITHGAP
JEFF
0
360
360
2,117
2,117
121
Macquarie Energy LLC
NWMT
Pacificorp
MATL.NWMT
JEFF
0
560
560
3,293
3,293
122
Macquarie Energy LLC
NWMT
Pacificorp
STILLWIND
JEFF
0
280
280
1,646
1,646
123
Macquarie Energy LLC
NWMT
Pacificorp
COLSTRIP
JEFF
0
96
96
564
564
124
Macquarie Energy LLC
Pacifcorp
NWMT
YTP
MATL.NWMT
0
25
25
147
147
125
Macquarie Energy LLC
Pacifcorp
Pacificorp
YTP
JEFF
0
930
930
5,467
5,467
126
Macquarie Energy LLC
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
319
319
1,876
1,876
127
Macquarie Energy LLC
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
768
768
4,512
4,512
128
Macquarie Energy LLC
Pacificorp
BPA
YTP
BPAT.NWMT
0
1,421
1,421
8,349
8,349
129
Macquarie Energy LLC
Pacificorp
BPA
YTP
BPAT.NWMT
0
648
648
3,807
3,807
130
Macquarie Energy LLC
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
4,227
4,227
24,836
24,836
131
Macquarie Energy LLC
WAPA
Pacificorp
CROSSOVER
YTP
0
491
491
2,887
2,887
132
MAG Energy Solutions
NWMT
MATL
MATL.NWMT
BPAT.NWMT
0
44
44
259
259
133
MAG Energy Solutions
NWMT
Pacificorp
MATL.NWMT
JEFF
0
154
154
906
906
134
MAG Energy Solutions
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
75
75
441
441
135
MAG Energy Solutions
WAPA
MATL
CROSSOVER
MATL.NWMT
0
30
30
176
176
136
MAG Energy Solutions
WAPA
Pacificorp
CROSSOVER
BRDY
0
111
111
653
653
137
MAG Energy Solutions
WAPA
Pacificorp
CROSSOVER
JEFF
0
218
218
1,282
1,282
138
Mercuria Energy America, LLC
AVISTA
Pacificorp
AVAT.NWMT
BRDY
0
77,280
77,280
448,875
448,875
139
Mercuria Energy America, LLC
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
3,864
3,864
22,678
22,678
140
Mercuria Energy America, LLC
Pacificorp
BPA
YTP
BPAT.NWMT
0
210
210
1,235
1,235
141
Mercuria Energy America, LLC
Pacificorp
BPA
YTP
BPAT.NWMT
0
532
532
2,538
2,538
142
Mercuria Energy America, LLC
Pacificorp
NWMT
YTP
NWMT.SYSTEM
0
1,560
1,560
9,165
9,165
143
Mercuria Energy America, LLC
Pacificorp
Pacificorp
YTP
BRDY
0
18,625
18,625
106,875
106,875
144
Mercuria Energy America, LLC
Pacificorp
WAPA
YTP
CROSSOVER
0
42
42
247
247
145
Mercuria Energy America, LLC
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
1,008
1,008
5,922
5,922
146
Mercuria Energy America, LLC
WAPA
Pacificorp
CROSSOVER
BRDY
0
30
30
147
Mercuria Energy America, LLC
WAPA
Pacificorp
CROSSOVER
YTP
0
22,320
22,320
128,250
128,250
148
Mercuria Energy America, LLC
WAPA
Pacificorp
CROSSOVER
YTP
0
696
696
4,089
4,089
149
Morgan Stanley Capital  Group
AVISTA
Glacier Wind
AVAT.NWMT
GLWND1
0
6
6
35
35
150
Morgan Stanley Capital  Group
AVISTA
MATL
AVAT.NWMT
MATL.NWMT
0
4,476
4,476
26,319
26,319
151
Morgan Stanley Capital  Group
AVISTA
MATL
AVAT.NWMT
MATL.NWMT
0
176,589
176,589
1,026,435
1,026,435
152
Morgan Stanley Capital  Group
AVISTA
Pacificorp
AVAT.NWMT
JEFF
0
16
16
94
94
153
Morgan Stanley Capital  Group
BPA
Glacier Wind
BPAT.NWMT
GLWND1
0
198
198
1,164
1,164
154
Morgan Stanley Capital  Group
BPA
MATL
BPAT.NWMT
MATL.NWMT
0
24,041
24,041
141,361
141,361
155
Morgan Stanley Capital  Group
BPA
MATL
BPAT.NWMT
MATL.NWMT
0
195,119
195,119
1,132,875
1,132,875
156
Morgan Stanley Capital  Group
BPA
NWMT
BPAT.NWMT
NWMT.SYSTEM
0
50
50
294
294
157
Morgan Stanley Capital  Group
BPA
Pacificorp
BPAT.NWMT
JEFF
0
1,278
1,278
7,515
7,515
158
Morgan Stanley Capital  Group
BPA
Pacificorp
BPAT.NWMT
YTP
0
29
29
171
171
159
Morgan Stanley Capital  Group
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
161
161
947
947
160
Morgan Stanley Capital  Group
CNTP
BPA
HARDIN
BPAT.NWMT
0
430
430
2,528
2,528
161
Morgan Stanley Capital  Group
CNTP
Glacier Wind
HARDIN
GLWND1
0
37
37
218
218
162
Morgan Stanley Capital  Group
CNTP
MATL
HARDIN
MATL.NWMT
0
95
95
559
559
163
Morgan Stanley Capital  Group
CNTP
MATL
HARDIN
MATL.NWMT
0
2,208
2,208
12,825
12,825
164
Morgan Stanley Capital  Group
Colstrip Partners
BPA
COLSTRIP
BPAT.NWMT
0
1,000
1,000
5,880
5,880
165
Morgan Stanley Capital  Group
Colstrip Partners
BPA
COLSTRIP
BPAT.NWMT
0
240
240
1,410
1,410
166
Morgan Stanley Capital  Group
Glacier Wind
AVISTA
GLWND1
AVAT.NWMT
0
1,392
1,392
8,185
8,185
167
Morgan Stanley Capital  Group
Glacier Wind
AVISTA
GLWND2
AVAT.NWMT
0
689
689
4,051
4,051
168
Morgan Stanley Capital  Group
Glacier Wind
AVISTA
GLWND1
AVAT.NWMT
0
3,720
3,720
21,855
21,855
169
Morgan Stanley Capital  Group
Glacier Wind
AVISTA
GLWND2
AVAT.NWMT
0
3,552
3,552
20,868
20,868
170
Morgan Stanley Capital  Group
Glacier Wind
BPA
GLWND1
BPAT.NWMT
0
7,418
7,418
43,614
43,614
171
Morgan Stanley Capital  Group
Glacier Wind
BPA
GLWND2
BPAT.NWMT
0
6,916
6,916
40,660
40,660
172
Morgan Stanley Capital  Group
Glacier Wind
BPA
GLWND1
BPAT.NWMT
0
8,199
8,199
48,081
48,081
173
Morgan Stanley Capital  Group
Glacier Wind
BPA
GLWND2
BPAT.NWMT
0
4,714
4,714
27,636
27,636
174
Morgan Stanley Capital  Group
Glacier Wind
Glacier Wind
GLWND1
GLWND2
0
2
2
12
12
175
Morgan Stanley Capital  Group
Glacier Wind
MATL
GLWND1
MATL.NWMT
0
2,342
2,342
13,771
13,771
176
Morgan Stanley Capital  Group
Glacier Wind
MATL
GLWND2
MATL.NWMT
0
712
712
4,187
4,187
177
Morgan Stanley Capital  Group
Glacier Wind
NWMT
GLWND2
NWMT.SYSTEM
0
5,208
5,208
29,925
29,925
178
Morgan Stanley Capital  Group
Glacier Wind
NWMT
GLWND2
GREATFALLS
0
192
192
1,128
1,128
179
Morgan Stanley Capital  Group
Glacier Wind
NWMT
GLWND2
NWMT.SYSTEM
0
10,248
10,248
59,850
59,850
180
Morgan Stanley Capital  Group
Glacier Wind
Pacificorp
GLWND1
BRDY
0
191
191
1,123
1,123
181
Morgan Stanley Capital  Group
Glacier Wind
Pacificorp
GLWND1
JEFF
0
926
926
5,445
5,445
182
Morgan Stanley Capital  Group
Glacier Wind
Pacificorp
GLWND2
BRDY
0
11
11
65
65
183
Morgan Stanley Capital  Group
Glacier Wind
Pacificorp
GLWND2
JEFF
0
259
259
1,523
1,523
184
Morgan Stanley Capital  Group
MATL
AVISTA
MATL.NWMT
AVAT.NWMT
0
2,880
2,880
16,928
16,928
185
Morgan Stanley Capital  Group
MATL
AVISTA
MATL.NWMT
AVAT.NWMT
0
15,480
15,480
90,504
90,504
186
Morgan Stanley Capital  Group
MATL
BPA
MATL.NWMT
BPAT.NWMT
0
17,833
17,833
104,824
104,824
187
Morgan Stanley Capital  Group
MATL
BPA
MATL.NWMT
BPAT.NWMT
0
11,257
11,257
65,988
65,988
188
Morgan Stanley Capital  Group
MATL
Glacier Wind
MATL.NWMT
GLWND1
0
118
118
694
694
189
Morgan Stanley Capital  Group
MATL
Pacificorp
MATL.NWMT
BRDY
0
146
146
858
858
190
Morgan Stanley Capital  Group
MATL
Pacificorp
MATL.NWMT
JEFF
0
842
842
4,951
4,951
191
Morgan Stanley Capital  Group
MATL
Pacificorp
MATL.NWMT
JEFF
0
1,200
1,200
7,050
7,050
192
Morgan Stanley Capital  Group
NWMT
BPA
KERR
BPAT.NWMT
0
4
4
24
24
193
Morgan Stanley Capital  Group
NWMT
MATL
COLSTRIP
MATL.NWMT
0
1,158
1,158
6,809
6,809
194
Morgan Stanley Capital  Group
Pacificorp
MATL
BRDY
MATL.NWMT
0
152
152
894
894
195
Morgan Stanley Capital  Group
WAPA
AVISTA
GREATFALLS
AVAT.NWMT
0
196
196
1,152
1,152
196
Morgan Stanley Capital  Group
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
150
150
882
882
197
Morgan Stanley Capital  Group
WAPA
BPA
GREATFALLS
BPAT.NWMT
0
2,898
2,898
17,040
17,040
198
Morgan Stanley Capital  Group
WAPA
MATL
CROSSOVER
MATL.NWMT
0
466
466
2,740
2,740
199
Morgan Stanley Capital  Group
WAPA
MATL
GREATFALLS
MATL.NWMT
0
1,961
1,961
11,531
11,531
200
Morgan Stanley Capital  Group
WAPA
Pacificorp
GREATFALLS
BRDY
0
37
37
218
218
201
Morgan Stanley Capital  Group
WAPA
Pacificorp
GREATFALLS
JEFF
0
42
42
247
247
202
Naturener Power Watch, LLC
Glacier Wind
Glacier Wind
GLWND1
GLWND2
0
11,040
11,040
64,126
64,126
203
PacifiCorp
BPA
NWMT
BPAT.NWMT
COLSTRIP
0
48
48
282
282
204
PacifiCorp
BPA
Pacificorp
BPAT.NWMT
YTP
0
187,595
187,595
1,090,125
1,090,125
205
PacifiCorp
Colstrip Partners
Pacificorp
COLSTRIP
YTP
0
9,408
9,408
55,216
55,216
206
PacifiCorp
NWMT
NWMT
COLSTRIP
NWMT.SYSTEM
0
34
34
200
200
207
PacifiCorp
NWMT
NWMT
COLSTRIP
NWMT.SYSTEM
0
672
672
3,944
3,944
208
PacifiCorp
Pacificorp
BPA
YTP
BPAT.NWMT
0
2,694
2,694
15,841
15,841
209
PacifiCorp
Pacificorp
NWMT
YTP
COLSTRIP
0
12
12
71
71
210
Phillips 66 Company
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
241
241
1,417
1,417
211
Portland General Electric Company
AVISTA
AVISTA
COLSTRIP
AVAT.NWMT
0
2,818
2,818
16,570
16,570
212
Portland General Electric Company
AVISTA
NWMT
AVAT.NWMT
COLSTRIP
0
21
21
123
123
213
Portland General Electric Company
AVISTA
NWMT
AVAT.NWMT
NWMT.SYSTEM
0
192
192
1,129
1,129
214
Portland General Electric Company
AVISTA
Pacificorp
AVAT.NWMT
YTP
0
8
8
47
47
215
Portland General Electric Company
BPA
NWMT
BPAT.NWMT
COLSTRIP
0
447
447
2,628
2,628
216
Portland General Electric Company
BPA
NWMT
BPAT.NWMT
NWMT.SYSTEM
0
400
400
2,352
2,352
217
Portland General Electric Company
BPA
Pacificorp
BPAT.NWMT
YTP
0
54
54
318
318
218
Portland General Electric Company
Colstrip Partners
AVISTA
COLSTRIP
AVAT.NWMT
0
423
423
2,487
2,487
219
Portland General Electric Company
Colstrip Partners
BPA
COLSTRIP
BPAT.NWMT
0
19,040
19,040
111,955
111,955
220
Portland General Electric Company
Colstrip Partners
NWMT
COLSTRIP
TOWNSEND
0
40
40
235
235
221
Portland General Electric Company
Colstrip Partners
Pacificorp
COLSTRIP
BRDY
0
1,130
1,130
6,644
6,644
222
Portland General Electric Company
Pacificorp
BPA
YTP
BPAT.NWMT
0
240
240
1,411
1,411
223
Powerex  Corporation
AVISTA
Pacificorp
AVAT.NWMT
YTP
0
470
470
2,764
2,764
224
Powerex  Corporation
AVISTA
WAPA
AVAT.NWMT
CROSSOVER
0
50
50
294
294
225
Powerex  Corporation
BPA
AVISTA
BPAT.NWMT
AVAT.NWMT
0
1
1
6
6
226
Powerex  Corporation
BPA
Pacificorp
BPAT.NWMT
JEFF
0
16
16
94
94
227
Powerex  Corporation
BPA
Pacificorp
BPAT.NWMT
YTP
0
1,668
1,668
9,808
9,808
228
Powerex  Corporation
BPA
Pacificorp
BPAT.NWMT
BRDY
0
222,289
222,289
1,291,050
1,291,050
229
Powerex  Corporation
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
425
425
2,499
2,499
230
Powerex  Corporation
MATL
BPA
MATL.NWMT
BPAT.NWMT
0
200
200
1,176
1,176
231
Powerex  Corporation
Pacificorp
BPA
YTP
BPAT.NWMT
0
705
705
4,145
4,145
232
Powerex  Corporation
Pacificorp
Pacificorp
BRDY
YTP
0
50
50
294
294
233
Powerex  Corporation
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
533
533
3,134
3,134
234
Puget Sound Energy Marketing
BPA
NWMT
BPAT.NWMT
COLSTRIP
0
288
288
1,693
1,693
235
Puget Sound Energy Marketing
Colstrip Partners
BPA
COLSTRIP
BPAT.NWMT
0
1,200
1,200
7,050
7,050
236
Puget Sound Energy Marketing
Colstrip Partners
BPA
COLSTRIP
BPAT.NWMT
0
25,560
25,560
150,020
150,020
237
Rainbow Energy Marketing Corp
BPA
Pacificorp
BPAT.NWMT
JEFF
0
19
19
112
112
238
Rainbow Energy Marketing Corp
BPA
Pacificorp
BPAT.NWMT
YTP
0
926
926
5,445
5,445
239
Rainbow Energy Marketing Corp
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
50
50
294
294
240
Rainbow Energy Marketing Corp
Pacificorp
BPA
YTP
BPAT
0
250
250
1,470
1,470
241
Rainbow Energy Marketing Corp
Pacificorp
NWMT
BRDY
NWMT.SYSTEM
0
600
600
3,525
3,525
242
Rainbow Energy Marketing Corp
Pacificorp
WAPA
YTP
CROSSOVER
0
87
87
512
512
243
Rainbow Energy Marketing Corp
WAPA
AVISTA
CROSSOVER
AVAT.NWMT
0
600
600
3,525
3,525
244
Rainbow Energy Marketing Corp
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
720
720
4,230
4,230
245
Rainbow Energy Marketing Corp
WAPA
NWMT
CROSSOVER
NWMT.SYSTEM
0
1,320
1,320
7,755
7,755
246
Rainbow Energy Marketing Corp
WAPA
Pacificorp
CROSSOVER
JEFF
0
116
116
682
682
247
Rainbow Energy Marketing Corp
WAPA
Pacificorp
CROSSOVER
YTP
0
104
104
612
612
248
Shell Energy North America
AVISTA
Pacificorp
AVAT.NWMT
YTP
0
38
38
223
223
249
Shell Energy North America
BPA
Pacificorp
BPAT.NWMT
BRDY
0
259
259
1,523
1,523
250
Shell Energy North America
BPA
Pacificorp
BPAT.NWMT
JEFF
0
9
9
53
53
251
Shell Energy North America
BPA
Pacificorp
BPAT.NWMT
YTP
0
1,844
1,844
10,843
10,843
252
Shell Energy North America
NWMT
BPA
CROOKEDFALLS
BPAT.NWMT
0
180
180
1,058
1,058
253
Shell Energy North America
Pacificorp
AVISTA
BRDY
AVAT.NWMT
0
12,600
12,600
73,950
73,950
254
Shell Energy North America
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
1,567
1,567
9,210
9,210
255
Shell Energy North America
Pacificorp
AVISTA
YTP
AVAT.NWMT
0
108,550
108,550
635,275
635,275
256
Shell Energy North America
Pacificorp
BPA
YTP
BPAT.NWMT
0
37,931
37,931
222,900
222,900
257
Shell Energy North America
Pacificorp
BPA
YTP
BPAT.NWMT
0
42,506
42,506
249,329
249,329
258
Shell Energy North America
Pacificorp
Pacificorp
YTP
BRDY
0
60
60
353
353
259
Shell Energy North America
WAPA
AVISTA
CROSSOVER
AVAT.NWMT
0
327
327
1,923
1,923
260
Shell Energy North America
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
21,669
21,669
127,402
127,402
261
Shell Energy North America
WAPA
Pacificorp
CROSSOVER
JEFF
0
239
239
1,405
1,405
262
Shell Energy North America
WAPA
Pacificorp
CROSSOVER
YTP
0
81
81
476
476
263
Talen Energy Marketing, LLC
NWMT
BPAT
GTFALLSNWMT
BPAT.NWMT
25
55,200
55,200
320,588
320,588
264
The Energy Authority
BPA
Pacificorp
BPAT.NWMT
BRDY
0
783
783
4,604
4,604
265
The Energy Authority
BPA
Pacificorp
BPAT.NWMT
JEFF
0
227
227
1,335
1,335
266
The Energy Authority
BPA
Pacificorp
BPAT.NWMT
YTP
0
303
303
1,782
1,782
267
The Energy Authority
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
1,102
1,102
6,480
6,480
268
The Energy Authority
Pacificorp
AVA
YTP
AVAT.NWMT
0
25
25
147
147
269
The Energy Authority
Pacificorp
BPAT
BRDY
BPAT.NWMT
0
101
101
594
594
270
The Energy Authority
Pacificorp
BPAT
YTP
BPAT.NWMT
0
5,619
5,619
33,040
33,040
271
The Energy Authority
Pacificorp
Pacificorp
YTP
BRDY
0
145
145
853
853
272
The Energy Authority
Pacificorp
Pacificorp
YTP
JEFF
0
397
397
2,334
2,334
273
The Energy Authority
Pacificorp
WAPA
BRDY
CROSSOVER
0
42
42
247
247
274
The Energy Authority
Pacificorp
WAPA
YTP
CROSSOVER
0
6
6
35
35
275
The Energy Authority
WAPA
AVA
CROSSOVER
AVAT.NWMT
0
35
35
206
206
276
The Energy Authority
WAPA
BPAT
CROSSOVER
BPAT.NWMT
0
467
467
2,746
2,746
277
The Energy Authority
WAPA
Pacificorp
CROSSOVER
BRDY
0
75
75
441
441
278
The Energy Authority
WAPA
Pacificorp
CROSSOVER
YTP
0
30
30
176
176
279
TransAlta Energy Marketing
AVISTA
NWMT
AVAT.NWMT
NWMT.SYSTEM
0
42
42
247
247
280
TransAlta Energy Marketing
BPA
Pacificorp
BPAT.NWMT
BRDY
0
44,140
44,140
256,500
256,500
281
TransAlta Energy Marketing
BPA
WAPA
BPAT.NWMT
CROSSOVER
0
912
912
5,363
5,363
282
TransAlta Energy Marketing
MATL
BPA
MATL.NWMT
BPAT.NWMT
0
505
505
2,969
2,969
283
TransAlta Energy Marketing
Pacificorp
BPA
YTP
BPAT.NWMT
0
2,144
2,144
12,607
12,607
284
TransAlta Energy Marketing
WAPA
AVISTA
CROSSOVER
AVAT.NWMT
0
158
158
929
929
285
TransAlta Energy Marketing
WAPA
BPA
CROSSOVER
BPAT.NWMT
0
9,830
9,830
57,800
57,800
286
TransAlta Energy Marketing
WAPA
Pacificorp
CROSSOVER
BRDY
0
194
194
1,141
1,141
287
Uniper Global Commodities North America LLC
Pacificorp
BPA
YTP
BPAT.NWMT
0
150
150
882
882
288
Western Area Power Admin
WAPA
NWMT
CROSSOVER
NWMT.SYSTEM
0
138
138
811
811
289
Western Area Power Admin
WAPA
NWMT
GREATFALLS
NWMT.SYSTEM
0
4,416
4,416
25,650
25,650
290
Western Area Power Admin
WAPA
WAPA
CANYONFERRY
CROSSOVER
0
29,303
29,303
172,302
172,302
291
Western Area Power Admin
WAPA
WAPA
CANYONFERRY
GREATFALLS
0
24,528
24,528
144,225
144,225
292
Western Area Power Admin
WAPA
WAPA
CROSSOVER
GREATFALLS
0
33,120
33,120
192,375
192,375
293
Western Area Power Admin
WAPA
WAPA
GREATFALLS
CROSSOVER
0
44,160
44,160
256,500
256,500
294
SOUTH DAKOTA
295
BRYANT, CITY OF
WAPA
BRYANT
HURON 115 KV BUS
BRYANT 25 KV
1,076
1,076
8,343
8,343
296
GROTON, CITY OF
WAPA
GROTON
HURON 115 KV BUS
GROTON 69 KV
3,939
3,939
263
263
297
LANGFORD, CITY OF
WAPA
LANGFORD
HURON 115 KV BUS
LANGFORD 12.5 KV
782
782
6,334
6,334
298
Southwest Power Pool (SPP)
SPP
Various
Various
Various
0
0
76,607
(a)
76,607
299
Southwest Power Pool (SPP)
SPP
Various
Various
Various
0
0
24,696
(b)
24,696
300
Southwest Power Pool (SPP)
SPP
Various
Various
Various
0
0
1,629,154
(c)
1,629,154
35 TOTAL
1,091
3,893,594
3,893,594
9,353,965
14,089,209
1,730,457
25,173,631


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: RevenuesFromTransmissionOfElectricityForOthers
Firm and Non-Firm Point to Point Transmission Service
(b) Concept: RevenuesFromTransmissionOfElectricityForOthers
Non-Firm Point to Point Transmission Service
(c) Concept: RevenuesFromTransmissionOfElectricityForOthers
Network Integration Transmission Service

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
TRANSMISSION OF ELECTRICITY BY ISO/RTOs
  1. Report in Column (a) the Transmission Owner receiving revenue for the transmission of electricity by the ISO/RTO.
  2. Use a separate line of data for each distinct type of transmission service involving the entities listed in Column (a).
  3. In Column (b) enter a Statistical Classification code based on the original contractual terms and conditions of the service as follows: FNO – Firm Network Service for Others, FNS – Firm Network Transmission Service for Self, LFP – Long-Term Firm Point-to-Point Transmission Service, OLF – Other Long-Term Firm Transmission Service, SFP – Short-Term Firm Point-to-Point Transmission Reservation, NF – Non-Firm Transmission Service, OS – Other Transmission Service and AD- Out-of-Period Adjustments. Use this code for any accounting adjustments or “true-ups” for service provided in prior reporting periods. Provide an explanation in a footnote for each adjustment. See General Instruction for definitions of codes.
  4. In column (c) identify the FERC Rate Schedule or tariff Number, on separate lines, list all FERC rate schedules or contract designations under which service, as identified in column (b) was provided.
  5. In column (d) report the revenue amounts as shown on bills or vouchers.
  6. Report in column (e) the total revenues distributed to the entity listed in column (a).
Line No.
Payment Received by (Transmission Owner Name)
(a)
Statistical Classification
(b)
FERC Rate Schedule or Tariff Number
(c)
Total Revenue by Rate Schedule or Tariff
(d)
Total Revenue
(e)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
40
TOTAL


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
TRANSMISSION OF ELECTRICITY BY OTHERS (Account 565)
  1. Report all transmission, i.e. wheeling or electricity provided by other electric utilities, cooperatives, municipalities, other public authorities, qualifying facilities, and others for the quarter.
  2. In column (a) report each company or public authority that provided transmission service. Provide the full name of the company, abbreviate if necessary, but do not truncate name or use acronyms. Explain in a footnote any ownership interest in or affiliation with the transmission service provider. Use additional columns as necessary to report all companies or public authorities that provided transmission service for the quarter reported.
  3. In column (b) enter a Statistical Classification code based on the original contractual terms and conditions of the service as follows:
    FNS - Firm Network Transmission Service for Self, LFP - Long-Term Firm Point-to-Point Transmission Reservations. OLF - Other Long-Term Firm Transmission Service, SFP - Short-Term Firm Point-to- Point Transmission Reservations, NF - Non-Firm Transmission Service, and OS - Other Transmission Service. See General Instructions for definitions of statistical classifications.
  4. Report in column (c) and (d) the total megawatt hours received and delivered by the provider of the transmission service.
  5. Report in column (e), (f) and (g) expenses as shown on bills or vouchers rendered to the respondent. In column (e) report the demand charges and in column (f) energy charges related to the amount of energy transferred. On column (g) report the total of all other charges on bills or vouchers rendered to the respondent, including any out of period adjustments. Explain in a footnote all components of the amount shown in column (g). Report in column (h) the total charge shown on bills rendered to the respondent. If no monetary settlement was made, enter zero in column (h). Provide a footnote explaining the nature of the non-monetary settlement, including the amount and type of energy or service rendered.
  6. Enter ""TOTAL"" in column (a) as the last line.
  7. Footnote entries and provide explanations following all required data.
TRANSFER OF ENERGY EXPENSES FOR TRANSMISSION OF ELECTRICITY BY OTHERS
Line No.
NameOfCompanyOrPublicAuthorityTransmissionOfElectricityByOthers
Name of Company or Public Authority (Footnote Affiliations)
(a)
StatisticalClassificationCode
Statistical Classification
(b)
TransmissionOfElectricityByOthersEnergyReceived
MegaWatt Hours Received
(c)
TransmissionOfElectricityByOthersEnergyDelivered
MegaWatt Hours Delivered
(d)
DemandChargesTransmissionOfElectricityByOthers
Demand Charges ($)
(e)
EnergyChargesTransmissionOfElectricityByOthers
Energy Charges ($)
(f)
OtherChargesTransmissionOfElectricityByOthers
Other Charges ($)
(g)
ChargesForTransmissionOfElectricityByOthers
Total Cost of Transmission ($)
(h)
1
MONTANA
2
Vigilante Elec. Coop
7484
7,484
14,040
14,040
3
Bonneville Power Admin
(a)
913,713
913,713
4
Glacier Electric Coop
1529
1,529
4,832
4,832
5
Southwest Power Pool
28494
28,494
816,056
816,056
6
Supply:
7
Avista
4755
4,755
31,209
31,209
8
Bonneville Power Admin
111534
111,534
336,153
336,153
9
Idaho Power Company
0
0
13
13
10
Seattle City Light
2719
2,719
3,931
3,931
11
SOUTH DAKOTA
12
East River
825
825
13
Southwest Power Pool
5,148,914
5,148,914
TOTAL
156,515
156,515
5,984,667
371,306
913,713
7,269,685


FOOTNOTE DATA

(a) Concept: OtherChargesTransmissionOfElectricityByOthers
Monthly system usage fee

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
Deprec, Depl and Amort of Elec Plant (403,403.1,404,and 405) (except Amortization of Acquisition Adjustments)
  1. Report the year to date amounts of depreciation expense, asset retirement cost depreciation, depletion and amortization, except amortization of acquisition adjustments for the accounts indicated and classified according to the plant functional groups described.
Line No.
FunctionalClassificationAxis
Functional Classification
(a)
DepreciationExpenseExcludingAmortizationOfAcquisitionAdjustments
Depreciation Expense (Account 403)
(b)
DepreciationExpenseForAssetRetirementCostsExcludingAmortizationgOfAcquisitionAdjustments
Depreciation Expense for Asset Retirement Costs (Account 403.1)
(c)
AmortizationOfLimitedTermPlantOrProperty
Amortization of Limited Term Electric Plant (Account 404)
(d)
AmortizationOfOtherElectricPlant
Amortization of Other Electric Plant (Acc 405)
(e)
DepreciationAndAmortization
Total
(f)
1
Intangible Plant
325,963
325,963
2
Steam Production Plant
5,246,611
5,246,611
3
Nuclear Production Plant
4
Hydraulic Production Plant-Conventional
7,384,535
7,384,535
5
Hydraulic Production Plant-Pumped Storage
6
Other Production Plant
12,994,648
4,204
12,998,852
7
Transmission Plant
19,270,545
368,815
19,639,360
8
Distribution Plant
42,598,025
19,051
42,578,974
9
General Plant
7,570,965
7,570,965
10
Common Plant-Electric
3,965,228
4,184,032
8,149,260
11
TOTAL
99,030,557
4,863,963
103,894,520


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
AMOUNTS INCLUDED IN ISO/RTO SETTLEMENT STATEMENTS
  1. The respondent shall report below the details called for concerning amounts it recorded in Account 555, Purchase Power, and Account 447, Sales for Resale, for items shown on ISO/RTO Settlement Statements. Transactions should be separately netted for each ISO/RTO administered energy market for purposes of determining whether an entity is a net seller or purchaser in a given hour. Net megawatt hours are to be used as the basis for determining whether a net purchase or sale has occurred. In each monthly reporting period, the hourly sale and purchase net amounts are to be aggregated and separately reported in Account 447, Sales for Resale, or Account 555, Purchased Power, respectively.
Line No.
Description of Item(s)
(a)
Balance at End of Quarter 1
(b)
Balance at End of Quarter 2
(c)
Balance at End of Quarter 3
(d)
Balance at End of Year
(e)
1 Energy
2 Net Purchases (Account 555)
161,804,268
20,662,038
37,820,834
2.1 Net Purchases (Account 555.1)
152,844,256
20,129,835
35,700,300
3 Net Sales (Account 447)
4 Transmission Rights
5 Ancillary Services
28,694
27,390
29,259
6 Other Items (list separately)
7
Day Ahead & Real Time Admin
100,429
95,864
102,410
8
Market Monitoring & Compliance
14,347
13,695
14,630
46 TOTAL
314,791,994
40,928,822
73,667,433


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
Monthly Peak Loads and Energy Output
  1. Report the monthly peak load and energy output. If the respondent has two or more power which are not physically integrated, furnish the required information for each non- integrated system.
  2. Report in column (b) by month the system’s output in Megawatt hours for each month.
  3. Report in column (c) by month the non-requirements sales for resale. Include in the monthly amounts any energy losses associated with the sales.
  4. Report in column (d) by month the system’s monthly maximum megawatt load (60 minute integration) associated with the system.
  5. Report in column (e) and (f) the specified information for each monthly peak load reported in column (d).
Line No.
MonthAxis
Month
(a)
Total Monthly Energy (MWH)
(b)
Monthly Non-Requirements Sales for Resale & Associated Losses
(c)
MonthlyPeakLoad
Monthly Peak Megawatts (See Instr. 4)
(d)
DayOfMonthlyPeak
Monthly Peak Day of Month
(e)
HourOfMonthlyPeak
Monthly Peak Hour
(f)
NAME OF SYSTEM: 0
1
January
2
February
3
March
4
Total for Quarter 1
5
April
6
May
7
June
8
Total for Quarter 2
9
July
10
August
11
September
12
Total for Quarter 3
41
Total
NAME OF SYSTEM: Montana Operations
1
January
2
February
3
March
4
Total for Quarter 1
5
April
6
May
7
June
8
Total for Quarter 2
9
July
10
August
11
September
12
Total for Quarter 3
41
Total
NAME OF SYSTEM: South Dakota Operations
1
January
2
February
3
March
4
Total for Quarter 1
5
April
6
May
7
June
8
Total for Quarter 2
9
July
10
August
11
September
12
Total for Quarter 3
41
Total


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
FOOTNOTE DATA

(a) Concept: EnergyActivity
MONTANA OPERATIONS

Line
No
Month Total Monthly Energy (MWH) Monthly Non-Requirements Sales for Resale & Associated Losses Monthly Peak Megawatts Monthly Peak Day of Month Monthly Peak Hour
(a) (b) (c ) (d) (e) (f)
1 July 598,928  52,598  2,115  27  1800 
2 August 695,165  44,287  1,977  16  1700 
3 September 643,503  66,747  1,703  1800 
4 Total for Quarter 1,937,596  163,632  5,795 


SOUTH DAKOTA OPERATIONS

Line
No
Month Total Monthly Energy (MWH) Monthly Non-Requirements Sales for Resale & Associated Losses Monthly Peak Megawatts Monthly Peak Day of Month Monthly Peak Hour
(a) (b) (c ) (d) (e) (f)
1 July 135,883  —  322  28  1500 
2 August 180,670  —  333  18  1700 
3 September 149,225  —  282  28  1700 
4 Total for Quarter 465,778  —  937 

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
MONTHLY TRANSMISSION SYSTEM PEAK LOAD
  1. Report the monthly peak load on the respondent's transmission system. If the respondent has two or more power systems which are not physically integrated, furnish the required information for each non-integrated system.
  2. Report on Column (b) by month the transmission system's peak load.
  3. Report on Columns (c ) and (d) the specified information for each monthly transmission - system peak load reported on Column (b).
  4. Report on Columns (e) through (j) by month the system' monthly maximum megawatt load by statistical classifications. See General Instruction for the definition of each statistical classification.
Line No.
Month
(a)
Monthly Peak MW - Total
(b)
Day of Monthly Peak
(c)
Hour of Monthly Peak
(d)
Firm Network Service for Self
(e)
Firm Network Service for Others
(f)
Long-Term Firm Point-to-point Reservations
(g)
Other Long-Term Firm Service
(h)
Short-Term Firm Point-to-point Reservation
(i)
Other Service
(j)
NAME OF SYSTEM: Montana Operations
1
January
1,685
27
9
991
647
158
12
3,075
2
February
1,908
11
20
1,190
714
128
12
5,277
3
March
1,564
1
8
895
624
128
12
3,666
4
Total for Quarter 1
3,076
1,985
414
36
12,018
5
April
1,615
1
9
823
598
128
12
2,356
6
May
1,612
17
19
855
599
128
12
1,288
7
June
2,113
30
18
1,222
669
128
12
4,603
8
Total for Quarter 2
2,900
1,866
384
36
8,247
9
July
2,000
27
18
1,247
655
103
12
2,690
10
August
1,862
16
17
1,124
607
103
12
2,163
11
September
1,588
7
18
987
570
103
12
3,326
12
Total for Quarter 3
3,358
1,832
309
36
8,179
13
October
14
November
15
December
16
Total for Quarter 4
0
0
0
0
0
17
Total
9,334
5,683
1,107
108
28,444
0
NAME OF SYSTEM: South Dakota Operations
1
January
2
February
3
March
4
Total for Quarter 1
5
April
6
May
7
June
8
Total for Quarter 2
9
July
10
August
11
September
12
Total for Quarter 3
13
October
14
November
15
December
16
Total for Quarter 4
17
Total


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2021
Year/Period of Report

End of:
2021
/
Q3
Monthly ISO/RTO Transmission System Peak Load
  1. Report the monthly peak load on the respondent's transmission system. If the Respondent has two or more power systems which are not physically integrated, furnish the required information for each non-integrated system.
  2. Report on Column (b) by month the transmission system's peak load.
  3. Report on Column (c) and (d) the specified information for each monthly transmission - system peak load reported on Column (b).
  4. Report on Columns (e) through (i) by month the system’s transmission usage by classification. Amounts reported as Through and Out Service in Column (g) are to be excluded from those amounts reported in Columns (e) and (f).
  5. Amounts reported in Column (j) for Total Usage is the sum of Columns (h) and (i).
Line No.
Month
(a)
Monthly Peak MW - Total
(b)
Day of Monthly Peak
(c)
Hour of Monthly Peak
(d)
Import into ISO/RTO
(e)
Exports from ISO/RTO
(f)
Through and Out Service
(g)
Network Service Usage
(h)
Point-to-Point Service Usage
(i)
Total Usage
(j)
NAME OF SYSTEM: South Dakota Operations
1
January
283
28
8
296
13
2
February
314
12
9
329
15
3
March
249
1
9
261
12
4
Total for Quarter 1
886
40
5
April
230
14
10
241
11
6
May
242
24
16
252
10
7
June
328
10
17
343
15
8
Total for Quarter 2
836
36
9
July
322
28
15
337
15
10
August
333
18
17
348
15
11
September
282
28
17
294
12
12
Total for Quarter 3
979
42
13
October
14
November
15
December
16
Total for Quarter 4
17
Total Year to Date/Year
2,701
118