The Hopi Tribe wants to use clean energy to replace the shuttered Navajo Generating Station. Those projects are now at risk.

Platte River Power Authority narrowly won support in a key round of scrutiny of its plans to build aeroderivative gas turbines north of Fort Collins.

It’s time to expand the generating capacity at the Tyee Lake hydroelectric station to handle growing demand — particularly from heat pumps — the plant’s operator said of its plans to line up $20 ...