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US EPA Rejects Colorado Haze Plan to Retire Coal Plants Early

EPA says Colorado unlawfully sought to close coal plants risking grid reliability and requires a revised plan or federal takeover within two years.

  • On Friday, the U.S. Environmental Protection Agency disapproved Colorado's 2022 Regional Haze SIP after acting on its Jan. 9 deadline and returned it for revision.
  • Because the state included forced retirements in its SIP, Colorado's haze plan sought to shut multiple coal plants, but EPA said closures without utility consent risked a 'taking' and cited DOE emergency orders and grid reliability concerns.
  • Specific examples include Nixon Unit 1 and Craig Unit 1, where Colorado Springs Utilities and Tri-State Generation and Transmission Association face costly repairs and $80,000,000 annual running costs in 2026.
  • As a result, Colorado must now submit a revised plan or face an EPA federal implementation plan finalized within two years, affecting timelines to close six remaining coal-fired plants and meet the 80% reduction by 2030.
  • Environmental groups condemned the EPA move Friday as undermining air-quality and park protections, while EPA Region 8 argued Colorado can meet regional haze 'glide path' requirements without forced coal plant closures amid the Trump administration's backing of coal operations.
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17 Articles

Denver PostDenver Post
+9 Reposted by 9 other sources
Center

EPA opposes Colorado plan to close coal-fired power plants

The Environmental Protection Agency on Friday determined Colorado cannot order the closure of coal-fired power plants under the Clean Air Act, and therefore, the agency will deny the state’s plan to reduce the haze that clouds views at Rocky Mountain National Park and other federal lands.

·Denver, United States
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Reuters broke the news in United Kingdom on Friday, January 9, 2026.
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