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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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Corporate Property Tax Reduction for New/Expanded Generating Facilities   

Last DSIRE Review: 10/22/2014
Program Overview:
State: Montana
Incentive Type: Property Tax Incentive
Eligible Renewable/Other Technologies: Solar Thermal Electric, Photovoltaics, Landfill Gas, Wind, Biomass, Geothermal Electric, Small Hydroelectric, Fuel Cells using Renewable Fuels
Applicable Sectors: Commercial, Industrial
Amount:Taxable value reduced by 50% for 5 years; reduction in taxable value declines each year thereafter until there is no reduction in tenth year.
Eligible System Size:Minimum size: 1 MW
Expiration Date:none
Web Site:
Authority 1:
Date Enacted:
MCA ยง 15-24-1401 et seq

Montana generating plants producing one megawatt (MW) or more with an alternative renewable energy source are eligible for the new or expanded industry property tax reduction. This incentive reduces the local mill levy during the first nine years of operation, subject to approval by the local government. If approved, the facility is taxed at 50% of its taxable value in the first five years following the issuance of the construction permit. Each year thereafter, the tax reduction decreases and the taxable value percentage is increased in equal increments until the full taxable value is attained in the tenth year. The tax reduction applies only to taxes levied for the local high schools and elementary schools and for the local government offering the reduction.

The taxable value varies, depending on the property ownership. If owned by a utility, an exempt wholesale generator or certain other electricity producers, the property is class 13 property and would otherwise be taxed at 6% of assessed value. If owned by an electric cooperative, the property is class 5 and would otherwise be taxed at 3% of assessed value. Certain electric cooperatives fall under class 7 or class 9 and property owned by those cooperatives is taxed at 8% of assessed value and 12% of assessed value, respectively.  If owned by any other business, the real property is class 4 and would otherwise be taxed at 2.47% of assessed value. Personal property is class 8 with a tax rate of up to 3% of assessed value. The assessed value of class 4 property is adjusted every six years, and the assessed value of the other classes is adjusted yearly.


  Information Specialist - MT Dept. of Rev.
Montana Department of Revenue
P.O. Box 5805
Helena, MT 59604-5805
Phone: (406) 444-6900
Web Site:
  Garrett Martin
Montana Department of Environmental Quality
Energy Planning & Renewable Energy
1520 East Sixth Ave
PO Box 200901
Helena, MT 59620-0901
Phone: (406) 444-6582
Fax: (406) 444-6836
Web Site:
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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.