Montana 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 summaries, tariffs and rates, and rules. Additionally, there are links to our Fuel Heating Cost Comparison (PDF) and Rate Comparison Information.

To Find Out More About Our Tariffs
NorthWestern Energy provides natural gas and electricity services through tariffs filed with and approved by the Montana Public Service Commission (MPSC). 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.

Electric Monthly Supply Rates

Natural Gas Transportation Rate Summary

Natural Gas Monthly Supply Rates

Rates and Tariffs

Rules

Electric Service Rules