Billings Gazette

13 of Colstrip co-owner PacifiCorp's 22 coal power plants are uneconomical

Colstrip power plant co-owner PacifiCorp reported this week that 13 of its 22 coal-fired power plants were uneconomical; Colstrip wasn’t among them, but its performance was marginal.

The Oregon-based utility issued the report in advance of its 2019 integrated resource plan, which lays out where the utility will (and won’t) be getting its power to service customer demand. Closing its uneconomical plants and looking elsewhere for power, such as renewable energy, would save PacifiCorp customers about $300 million, according to the report.

Colstrip Units 3 and 4 were part of the study. PacifiCorp has a 10 percent ownership share in those generators. The power station’s two other generators, Units 1 and 2, which are scheduled to close no later than 2022, are not part of PacifiCorp’s portfolio.

The report isn’t a road map for power plant closures, said David Eskelsen, a PacifiCorp spokesman.

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