As of May 2016
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 summaries, tariffs and rates, rules and regulatory filings. The blue buttons to the left are links to our Fuel Heating Cost Comparison and Rate Comparison Tools.
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.
The rate schedules and service rules are in format. If you do not have Adobe Acrobat Reader installed on your computer, you will need to download it free from the Adobe Site to view the documents.
NorthWestern Energy's FERC electric Open Access Transmission Tariff is provided online in WORD format. If you would like to print or read either of these documents, we recommend you download them. If you do not have access to Microsoft Word, you can download the Microsoft Word Viewer free from Microsoft.