Environmentalists lamented the agency’s decision, but Colorado officials said it would have little impact on its planned ...

The proposed rejection doesn’t stop Colorado from enforcing the plan, but it signals the federal government no longer ...

The EPA published a notice in the Federal Register that it intends to deny Colorado’s plan to shutter coal-fired power plants ...

Trump is challenging Colorado’s plan to shutter coal-fired power plants, showing a rift between federal and state priorities.

Xcel will be the first utility company in Colorado to initiate a large-scale coal-ash cleanup at the Valmont Power Station in Boulder County after lithium and selenium leaked into groundwater.

A union representative for the employees is objecting to a survey in which the workers must now disclose if they signed the ...

Environmentalists want the Colorado Department of Public Health and Environment to put Xcel Energy's closure date for its Comanche Unit 3 power plant in writing in its latest Title V air permit.

WASHINGTON (AP) — One of the nation’s oldest civil rights organizations on Thursday declared a “state of emergency” for ...

Mexico president says 14 Mexicans held in US detention center 'Alligator Alcatraz' ...

Agency plans to revise wastewater limits for power plants, potentially easing costly upgrades and shifting project timelines, with final rules expected by mid-2026.

Northwest Colorado entities are pushing for introduction of a federal bill to let coal miners who lose their jobs immediately access retirement benefits without tax penalties.