Solar energy

The utility’s plan to generate electricity using molten salt could serve as a template for other towns facing the end of the age of coal.

The environmentally friendly homes would make up just a tiny portion of the North Vista Highlands neighborhood. Developers think they will lure buyers looking for solar-ready homes built from nontoxic materials.

The payback would be 6-to-1, and would save Coloradans billions in energy costs

Internship program hones lessons taught by parents and grandparents as students learn the role food, housing, language and ritual play in contemporary human rights struggles. 

Arvada’s Geos community neighbors are all-electric and don’t want the next new homes to burn fossil fuels. But is there anything they can do to stop it?

Nine members of Tri-State asked what they’d have to pay to leave the association. Now they want to know the formula used to calculate the bills.

Nine members of the association, including United Power, asked more than a year ago how much it would cost to break contracts running to 2050. Federal regulators gave Tri-State 30 days to clear the air.

Looking at the cost of closing Colorado’s coal-fired power plants is a bit like considering the replacement of an old car.

The challenge started on a lark during the Solar Decathlon hosted in Denver in 2017. University of Colorado students persisted with novice crew -- and through COVID-19 -- to build a sustainable option to the lack of affordable housing in resort communities.

Shuttering plants to meet the state’s greenhouse gas emissions goals carries a hefty price tag, including costs of bonds to finance the wind down

Tri-State is cleaning up the way it generates electricity, but 7 members, including United Power in Colorado, want to know if they can afford a greener deal outside the partnership.

Big new solar and wind projects are planned to get Xcel Energy to 80% renewable generation in Colorado, but fossil fuels still will be needed to balance the system.

Colorado’s largest electricity provider expects to have 4,400 MW of wind power by the end of the year. Details are expected in Xcel’s resource plan Wednesday.

Northern Colorado had its own cold-weather challenge Sunday, making it through despite a notice to customers to turn down their thermostats

After 16 years of working for the oil giant, Dar-Lon Chang said Exxon would not address climate change. So he quit the sector for good, and began a new low-carbon life.

Teleworking may have reduced emissions from automobiles, but researchers say working from home increased household energy consumption by as much as 40%.

Installing solar utility generation is now cheaper than wind or natural gas-fired plants, and far cheaper than new coal generation.

Hayden Generating Station units 1 and 2 will be closed without layoffs of 75 people who work there, utility giant says as it moves toward 100% carbon-free electricity by 2050.

The state’s second largest electric provider plans to spend $21 billion to add renewable sources and battery storage. Natural gas is in the mix.