South Dakota Natural Gas Regulatory Rate Review

The South Dakota Public Utilities Commission (SDPUC) recently approved the first natural gas base rate increase for our customers since 2011.
Since then, NorthWestern Energy has invested $82.1 million in our South Dakota natural gas infrastructure to continue our commitment to providing reliable, sustainable energy service at the most affordable rates possible to our customers.
The SDPUC authorized a rate increase of $4.6 million, which is a 7 % total bill increase.
How much will my bill increase?
For a residential customer using 100 therms of gas in a month, the rate increase means a monthly bill increase of:
$6.47
If you have questions about our natural gas service, please call our customer service number at 800-245-6977.
NorthWestern Energy is here to help
We recognize that our rate increase will impact our customers during a period when other prices are also increasing. NorthWestern Energy is committed to helping customers who may be struggling with their bills.
What can I do to manage my bill?
- Start preparing today.
- Apply for financial assistance.
- Sign up for Budget Billing.
- Implement energy efficiency tips.