The expected early retirement of a massive coal plant in Pueblo County, Colo., has the county commissioners mulling small modular reactors as a power source replacement.
The plant in question is Xcel Energy’s three-unit Comanche Generating Station, Colorado’s largest single source of greenhouse gas emissions. In 2018, Xcel received approval from the Colorado Public Utilities Commission (PUC) to retire Units 1 and 2 in 2023 and 2025, respectively. And earlier this year, the company filed a proposal to close the much newer Unit 3 in 2039—three decades earlier than expected. (Xcel also plans to run the unit at only 33 percent, beginning in 2030.) Meanwhile, environmental groups have been pushing for the closure of Unit 3 by the end of the decade.