Montana Rates & Tariffs

Understanding NorthWestern Energy's Tariffs and Rates in Montana

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 Rates, Tariffs, Rules and Regulations

NorthWestern Energy is committed to providing fair and transparent electric rates for Montana. Our rates are approved by the Montana Public Service Commission and are designed to ensure accessible and affordable energy for all. In addition, we adhere to strict rules and regulations governing electric services in Montana, ensuring responsible energy management and compliance with all regulatory requirements.

Natural Gas Rates, Tariffs, Rules and Regulations

NorthWestern Energy is committed to providing fair and transparent natural gas rates for Montana. Our rates are approved by the Montana Public Service Commission and are designed to ensure accessible and affordable energy for all. In addition, we adhere to strict rules and regulations governing electric services in Montana, ensuring responsible energy management and compliance with all regulatory requirements.

Propane Rates, Tariffs, Rules and Regulations