Tri-State Generation and Transmission Association this week said it will close the coal-fired Nucla Station as soon as its on-site fuel supply is spent, likely in early 2020. The massive power company also plans to retire a coal-fired electric generation unit at Craig Station by the end of 2025. (William Woody, Special to The Colorado Sun)

Colorado co-op’s fight for renewable energy could upend how rural communities are powered

As fight with Delta-Montrose Electric Association heads to court -- and PUC hearing -- Tri-State announces new wind, solar projects

Energy Primary category in which blog post is published

Nicolais: Don’t be shocked by a drawn-out Democratic primary in Colorado Senate race

Despite the entry of two-term Gov. John Hickenlooper, prepare for 10 months of infighting with progressive candidates

Opinion