NorthWestern Energy
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Technology
Advanced Weather Forecasting: How Sub-Kilometer Models Are Reshaping Utility Risk and Wildfire Decisions
As fire-weather risk expands beyond California, utilities are turning to sub-kilometer, asset-level forecasts to support public safety power shutoff decisions they can defend in front of regulators. When the National Weather Service (NWS) issued routine convective outlooks on the morning of May 27, 2025, public guidance for the Houston metro called for widespread 30 to […]
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Gas
Judge Rules Montana Gas-Fired Plant Can Move Forward, While Landmark Climate Case Begins
A judge has ruled that construction of natural gas-fired power plant in Montana can resume, two months after the same judge ordered the project halted due to environmental concerns. The 175-MW Yellowstone County Generating Station, a $283 million facility sited near Laurel, has been dogged by legal actions after its air permit was challenged in […]
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Gas
Montana Judge Cancels Air Permit for Gas-Fired Power Plant
A judge in Montana has canceled the air quality permit for a natural gas-fired power plant under construction in the state, citing concerns about emissions of greenhouse gases from the facility. State District Judge Michael Moses on April 6 said government officials needed to more adequately consider the plant’s emissions during its lifecycle. The judge […]
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Coal
Ownership Shakeup at Colstrip Coal Power Plant
NorthWestern Energy said it will file an application with the Montana Public Service Commission for pre-approval to acquire Puget Sound Energy’s (PSE’s) 25% interest in Colstrip Unit 4, which is a 740-MW coal-fired boiler. The price? $1. “Securing more capacity for only a $1 investment is a unique opportunity that helps give us the time […]
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Coal
Operator Reverses Course, Will Keep Running Montana Coal Plant
The operator of one of the largest coal-fired power plants in the Western U.S. will continue to run the facility, changing course about a year after a company executive said the plant was not economically viable. A spokesman for Talen Energy confirmed to POWER on August 9 that the company will continue to operate the […]