EPA Rejects Colorado’s Regional Haze Plan, Including Coal Plant Retirement Dates - CleanTechnica

The Environmental Protection Agency (EPA) under the Trump administration has rejected Colorado’s Regional Haze Plan, which included voluntary retirement deadlines for coal-fired power plants proposed by utilities and supported by the state, industry, and environmental groups. The plan aimed to reduce air pollution and improve air quality in national parks and wilderness areas, in compliance with the Clean Air Act and the federal Regional Haze Rule. Despite this, the EPA disapproved the entire plan, citing concerns that retiring coal plants would harm grid reliability—a claim contested by Colorado officials and utilities who have planned to replace coal generation with cheaper, cleaner energy sources. The EPA’s rejection threatens to prevent the planned retirement of Unit 1 at Craig Station, potentially raising utility costs by tens of millions annually and worsening air quality in surrounding communities. Environmental advocates argue that the EPA’s decision is an illegal overreach that undermines state efforts to transition away from expensive, polluting coal plants toward cleaner energy, ultimately harming public health and the environment. Groups such as Earth