Montana ranks among the windiest states in the country, especially east of the Rocky Mountain Front. Whether that wind turns into power plants has long depended on two things: federal tax policy and transmission lines.
How the federal credit worked
The federal production tax credit (PTC) was created by the Energy Policy Act of 1992. It pays wind-farm owners a credit for each kilowatt-hour they generate during a project’s first ten years. Congress let it lapse and extended it many times, which made planning difficult for developers.
The Inflation Reduction Act of 2022 extended the credit and created new “technology-neutral” clean electricity credits starting in 2025. The July 4, 2025 budget law (Public Law 119-21, often called the One Big Beautiful Bill Act) ends those credits early for wind and solar. A wind project that began construction after July 4, 2026 qualifies only if it is placed in service by Dec. 31, 2027. Projects that began construction by July 4, 2026 keep a longer runway. IRS Notice 2025-42 requires developers to show “physical work of a significant nature” to prove construction began on time. Those rules will shape which Montana projects move ahead.
Montana projects
Montana’s wind fleet includes projects near Judith Gap, Great Falls and the Rocky Mountain Front, plus the large Clearwater Wind complex in southeastern Montana, which came online in phases in recent years. The U.S. Energy Information Administration publishes current state capacity and generation figures.
The transmission problem
Much of Montana’s best wind is far from population centers. Getting power to market depends on transmission capacity, including lines once tied to the Colstrip coal plant. Regulators at the Montana Public Service Commission and regional grid planners weigh those questions, along with what new generation means for customer rates.
What to watch
- Which Montana projects met the July 4, 2026 construction-start deadline, and whether others can be in service by the end of 2027.
- Transmission proposals connecting central and eastern Montana to western markets.
- Utility resource plans filed with the PSC.
For more background, see our explainers on federal clean-energy loans and grants and the Colstrip power plant. Find more stories in our Energy & Environment section.
Information for this story comes from U.S. EIA, Montana State Energy Profile; IRS, Clean Electricity Production Credit; Montana Public Service Commission; Public Law 119-21 (July 4, 2025), Sections 70512–70513; IRS Notice 2025-42 (Aug. 15, 2025).