South Dakota Rates & Tariffs

NorthWestern Energy tariffs are provided online for both electric and natural gas services. In the sections below you can find links to the online rates, tariffs and Rate Comparison Information.

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.