BILLINGS, MONT. – A judge canceled the air quality permit for a natural gas power plant that’s under construction along the Yellowstone River in Montana citing worries over climate change.
State District Judge Michael Moses ruled Thursday that Montana officials failed to adequately consider the 23 million tons of planet-warming greenhouse gases that the project would emit over several decades.
Many utilities across the U.S. have replaced coal power with less polluting natural gas plants in recent years. But the industry remains under pressure to abandon fossil fuels altogether as climate change worsens.
The $250 million Laurel Generating Station is being built by Sioux Falls, South Dakota-based NorthWestern Energy and would operate for at least 30 years.
Montana officials argued they had no authority to regulate greenhouse gas emissions. They also said that because climate change is a global phenomenon, state law prevented them from looking at its impacts.
But Moses said officials from the Montana Department of Environmental Quality had misinterpreted the law. He ordered them to conduct further environmental review and said they must gauge the climate change impacts within Montana in relation to the project. Major flooding on the Yellowstone last year wiped out bridges and triggered widespread evacuations following extreme rains, which scientists say are becoming more frequent as the climate changes.
“The emissions and impacts of the (Laurel Generating Station) are potentially significant,” Moses wrote. “Defendants do not dispute this.”
The judge also faulted officials for not considering how lights from the project could impact surrounding property owners. It’s on the outskirts of the town of Laurel across the river from a residential neighborhood.
The plant would produce up to 175 megawatts of electricity. Its air permit was challenged in a 2021 lawsuit from the Montana Environmental Information Center and Sierra Club.
A NorthWestern Energy representative did not immediately respond to a request for comment on whether the ruling would halt construction.
The ruling comes as the Montana Legislature weighs bills that would make it more difficult for organizations and individuals to sue state agencies over environmental decisions.
The state Senate passed a bill requiring anyone who wants to challenge an agency environmental review to have commented during the review process. They’d also have to pay for some of the agency’s court costs. The bill would also bar nonprofit organizations from using tax deductible donations to pay for lawsuits against state agencies.
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