Energy

Colorado issues notices to companies in falsified data case over cleanup of 404 oil and gas sites

Regulators took the first enforcement steps against some of Colorado's largest oil and gas operators in an investigation into reports of falsified data on the cleanup of 404 sites in Weld County.

In this Friday, May 27, 2016, photo, a pump jack works off state highway 119 near Firestone, Colorado. (Photo by David Zalubowski/Associated Press)

GRID Alternatives employees Tony Chang (L) and Sal Miranda install solar panels on October 19, 2023 in Pomona, California. (Photo by Mario Tama/Getty Images)

The solar tax credit is ending: what that means for homeowners

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Xcel Energy’s coal-fired Comanche Generating Station in Pueblo, Colorado, on Nov. 12, 2024. (Photo by RJ Sangosti/The Denver Post)

Xcel’s plan for future energy generation raises concerns about a sizable impact on ratepayers

1 week ago

EPA signals opposition to Colorado’s plan to close coal power plants

By Noelle Phillips

July 17, 2025 at 6:00 a.m.

The EPA published a notice in the Federal Register that it intends to deny Colorado’s...

Calvert Cliffs Clean Energy Center Director of Operations John Phillippi explains the Unit 2 steam turbine behind him. A tour of the Calvert Cliffs Clean Energy Center nuclear power plant in Lusby, Maryland. (Paul W. Gillespie/Staff)

From ‘No Nukes’ to Nuclear Now: The progressive energy flip

By Lorraine Mirabella

July 15, 2025 at 12:23 p.m.

"It was just complete insanity and stupidity to try to close a large, reliable source...

Critics of President Donald Trump's budget bill fear the loss of incentives for renewable energy and advanced manufacturing will undermine Colorado's clean energy industry.
(Photo by Joe Amon/The Denver Post)

Two big renewable energy projects in Colorado not moving forward

By Judith Kohler

July 13, 2025 at 6:00 a.m.

Even before President Donald Trump signed his tax and spending bill on the Fourth of...

In this aerial view, the shuttered Three Mile Island nuclear power plant stands in the middle of the Susquehanna River on Oct. 10, 2024, near Middletown, Pennsylvania. (Chip Somodevilla/Getty Images North America/TNS)

Smaller nuclear reactors spark renewed interest in a once-shunned energy source

By Tribune News Service

July 8, 2025 at 12:08 p.m.

In the past 2 years, half the states have taken action to promote nuclear power.

Strong winds blow coal dust from a coal pile at the Comanche Generating Station in Pueblo on March 4, 2025. (Photo by RJ Sangosti/The Denver Post)

Xcel needs new air permit for Pueblo’s Comanche station even as it plans to shutter the coal-fired plant

By Noelle Phillips

July 6, 2025 at 6:00 a.m.

Colorado's utility companies have been planning for nearly two decades to shutter their coal-burning power...

Xcel Energy will weigh its options after Elbert County denied its requests for permits to build part of its $1.7 billion transmission project through the area. The utility said it might seek relief from the courts or the Colorado Public Utilities Commission.
(Photo by Helen H. Richardson/The Denver Post)

Elbert County nixes permits, short-circuiting part of Xcel Energy’s $1.7B transmission project

By Judith Kohler

June 30, 2025 at 6:00 a.m.

The status of part of a $1.7 billion project to boost Colorado's electric grid is...

Xcel Energy's Valmont Power Station site is seen from Legion Park in Boulder, Colorado, on June 17, 2025. The utlity is planning a major clean-up of coal ash buried at the plant after selenium and lithium was discovered to be leaking into groundwater. (Photo by RJ Sangosti/The Denver Post)

Millions of tons of coal ash are buried underground in Colorado, seeping toxic chemicals into groundwater

By Noelle Phillips

June 29, 2025 at 6:00 a.m.

When Xcel Energy stopped burning coal at its Valmont Power Station in 2017, it left...

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