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Interested in Installing Renewable Energy or Net Metering?

If you’re installing a renewable energy system and you are a NorthWestern Energy electric customer, you must have the system pre-approved before you can interconnect it to NorthWestern Energy’s system.  This pre-approval is required regardless of whether or not the system is going to be net metered.  For more information on the pre-approval process and for the application documents, visit

E+ Renewable Incentives for Non-profit or Government/Public Buildings

Each year a limited amount of Universal System Benefits (USB) funding is available through the E+ Renewable Energy Program for renewable energy installations on non-profit or government/public buildings. The projects receiving E+ Renewable Energy funding must provide civic value including education and visible representation of renewable energy technologies to a broad audience.

For project qualifications and proposal requirements, click here.  Proposals are considered twice a year with the Spring proposals due on May 1 and the Fall proposals due on November 1.   Projects receiving E+ Renewable Energy funding must be installed by a NorthWestern Energy Qualified Installer.  These installers meet our professional, safety and independent contractor standards for renewable energy installations. 

Interested in becoming a Qualified Installer?

If you are a contractor or consultant/designer or engineer/architect and would like to become a Qualified Solar PV or Small Wind Installer, click here  to learn about qualifications and training opportunities.

Do Your Homework

We’ve been working with our customers interested in installing renewable energy systems on their homes and businesses for more than 20 years.  We know that there can be many questions and decisions along the way as you consider whether a renewable energy system makes sense for your business.  

The resources below may have content useful to you in planning a renewable energy project on your building.  

The Montana Consumer Guide to Small Wind Generation Systems
The Montana Consumer Guide To Grid Interactive Solar PV Systems
The Montana Consumer Guide to Micro-Hydro Systems
The Montana Consumer Guide to Solar Heating Systems
NOTE:  The guides contain a number of pictures and may take a minute or two to download. 

E+ Green Program

NorthWestern Energy’s electricity supply mix for our Montana customers includes more than 60% clean energy from carbon-free hydro, wind, and some solar generation.  We offer our Montana electric customers an option to "green up" their electricity usage with green power. You don’t have to install anything or make a big investment. For more information on how you can participate in the E+ Green Program and reduce your electricity-based carbon footprint while supporting the development of new renewable generation, click --> "Green" power.

Renewable Energy Resources for Existing Solar
Do you have questions about the operation of your existing solar photovoltaic system? Review  the resource to help you learn more about the safe and productive operation of your solar electric system. 

The Montana Solar Electric System Owner's Manual
NOTE:The guides contain a number of pictures and may take a minute or two to download. 

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