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The U.S. Department of Energy and the North Carolina Clean Energy Technology Center are excited to announce that a new, modernized DSIRE is under construction. The new version of DSIRE will offer significant improvements over the current version, including expanded data accessibility and an array of new tools for site users. The new DSIRE site will be available in December 2014. Staff are currently working hard on the new version of DSIRE but are also maintaining the content of the current version of DSIRE. Thank you for your continued support and patience during this transition. We hope you are as excited for December as we are!

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Incentives/Policies for Renewables & Efficiency

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NorthWestern Energy (Gas) - Residential Energy Efficiency Rebate Program   

Last DSIRE Review: 08/08/2012
Program Overview:
State: Montana
Incentive Type: Utility Rebate Program
Eligible Efficiency Technologies: Equipment Insulation, Water Heaters, Furnaces , Boilers, Heat recovery, Programmable Thermostats, Building Insulation, Comprehensive Measures/Whole Building
Applicable Sectors: Residential, Construction, Installer/Contractor
Amount:Programmable Thermostats: $30/unit; maximum of 2 per account
Gas Heating Equipment Diagnostics, Repair, & Maintenance: $60 - $75
Boiler: $160-$200
Furnace: $108-$135
Water Heater: $80-$100
Water Tank Insulation: $7/unit
Room Heater: $120-$150/unit
Boiler Controls: $232-$290/unit
Pipe Insulation: $1.13-$1.41/ln. ft.
Building Insulation: $0.22 - $0.62 per sq. ft.
Northwest Energy Star Manufactured Home (Gas): $0.25/sq. ft.
Maximum Incentive:Lighting: Maximum of fifteen CFLs and five lighting fixtures per calendar year
Programmable Thermostat: Two units per household
Equipment Requirements:Gas fired technology rebates are to replace standard technologies with efficiencies specified on the program application
Diagnostics, Repair, & Maintenance rebates can only be collected once every 5 years
Installation Requirements:All rebate amounts shown apply to preferred contractors; rebates for most equipment are less if Self-Installing or using Non-Preferred Contractors
Funding Source:Montana natural gas and electric supply rates.
Start Date:1/1/2009
Expiration Date:11/30/2012
Web Site:

NorthWestern Energy offers a variety of rebates for residential customers to make energy efficiency improvements in their existing homes. Customers who purchase an Energy Star programmable thermostat from a local retailer and install it in an eligible home can receive a $30 mail-in rebate.  Details are located in the Programmable Thermostat Rebate Application.

The utility sponsored Insulation Rebate program is also offered for Montana's NorthWestern Energy customers. In addition, Northwestern Energy's E+ program offers rebates for a variety of gas heating equipment improvements including the installation of boilers, furnaces, and equipment insulation through the Natural Gas Savings for the Home Program. There are also many rebates available for different types of water measures and insulation improvements, for both electric and natural gas space and water-heating. Customers building a new home are only eligible for boiler, furnace, boiler controls, and manufactured home incentives.

  Customer Service - NorthWestern
Northwestern Energy
P.O. Box 1167
Helena, MT 59624
Phone: (800) 823-5995
Fax: (800) 823-5885
NCSU - home
Disclaimer: The information presented on the DSIRE web site provides an unofficial overview of financial incentives and other policies. It does not constitute professional tax advice or other professional financial guidance, and it should not be used as the only source of information when making purchasing decisions, investment decisions or tax decisions, or when executing other binding agreements. Please refer to the individual contact provided below each summary to verify that a specific financial incentive or other policy applies to your project.

While the DSIRE staff strives to provide the best information possible, the DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. make no representations or warranties, either express or implied, concerning the accuracy, completeness, reliability or suitability of the information. The DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. disclaim all liability of any kind arising out of your use or misuse of the information contained or referenced on DSIRE Web pages.

Copyright 2014 - 2015 North Carolina State University, under NREL Subcontract No. XEU-0-99515-01. Permission granted only for personal or educational use, or for use by or on behalf of the U.S. government. North Carolina State University prohibits the unauthorized display, reproduction, sale, and/or distribution of all or portions of the content of the Database of State Incentives for Renewables and Efficiency (DSIRE) without prior, written consent.