Mark Jaffe

Duo behind two-decade push to build a sustainable power plant south of Buena Vista sues former partners, Colorado land board

Colorado Energy Office research was tailored to aid governor in dictating solar siting, much as he has done with housing, trade groups say

Mostly blue states, like Colorado, are losing $7.5 billion in federal clean energy grants. Democrats say it is an act of political revenge.

Colorado utility regulators will consider the request, but it could take up to 250 days to complete the review of Xcel's Power Pathways route

More than 300 lawsuits were consolidated into a case being heard in Boulder District Court. Jury selection starts Thursday.

Feds, the state, cities, counties, companies are looking at next-gen nuclear power. But no small modular reactors have been built in the US.

Colorado regulators will look again at a proposal to replace coal power with gas or small modular nuclear reactors at Comanche Station

Pueblo County to President Trump: Keep our coal-burning Comanche Station making power indefinitely

Xcel will issue a request for proposals for 4,500 megawatts of generating and battery projects, hoping Colorado regulators OK the projects

Electricity rates could double or even triple for Xcel Energy customers as the company launches an unprecedented spending plan.