South Dakota Rates & Tariffs


Northwestern Energy tariffs are provided online for both electric and natural gas services. By selecting the tabs at the bottom of page you can find links to the online Rates. The blue buttons to the left are links to our Fuel Heating Cost Comparison and Rate Comparison Tools.

Note:  NorthWestern Energy provides natural gas and electricity services through tariffs filed with and approved by the South Dakota Public Utilities Commission. Users of electronic tariffs should note that such tariffs are not the official documents, and users assume responsibility for reliance upon tariffs in electronic format.

If you have a question about our electric or natural gas rates, you may contact us.

South Dakota Rate Review

We’re committed to being a responsible steward of South Dakota's energy resources. We recognize that our rate request will impact customers, and we’re committed to helping customers who may be struggling with their bills.

South Dakota Rate Review Filing

NorthWestern Energy is seeking a regulatory electric rate review in South Dakota to support the continued strengthening of our electric system. Learn more about our request for a regulatory electric rate review at NorthWestern Energy.