Mandatory Utility Green Power Option

August 30, 2021


In Montana, regulated electric utilities are required to offer customers the option of purchasing electricity generated by certified, environmentally-preferred resources that include, but are not limited to, wind, solar, geothermal and biomass. NorthWestern Energy implemented a green-power program ("E+ Green") in June 2003.

Program Overview

Implementing Sector: State
Category: Regulatory Policy
State: Montana
Incentive Type: Mandatory Utility Green Power Option
Web Site:
Start Date:
Eligible Renewable/Other Technologies:
  • Geothermal Electric
  • Solar Thermal Electric
  • Solar Photovoltaics
  • Wind (All)
  • Biomass
  • Wind (Small)


Name: MCA 69-8-210
Date Enacted: 5/5/2003


Name: Will Rosquist
Organization: Montana Public Service Commission
Address: 1701 Prospect Avenue
Helena MT 59620-2601
Phone: (406) 444-6359
Name: Public Information
Organization: NorthWestern Energy
Address: 40 East Broadway
Butte MT 59701
Phone: (888) 467-2669

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.