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Columbia Generating Station back online after manual shutdown; FSEC opens 14‑day SEPA comment period on warehouse addendum

Energy Facility Site Evaluation Council · February 18, 2026
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Summary

Energy Northwest reported a manual shutdown of Columbia Generating Station on Feb. 12 to repair a glycol cooling filter that caused reactor recirculation pumps to trip; the plant returned to the grid Feb. 17. Separately, Energy Northwest asked FSEC to be SEPA lead for two warehouses; FSEC posted an addendum and opened a 14‑day public comment period.

Energy Northwest notified the Energy Facility Site Evaluation Council that Columbia Generating Station was taken offline on Feb. 12 after a cooling system fault in the glycol system caused both reactor recirculation pump drives to trip. Katie Hall, speaking for Energy Northwest, said operators performed repairs and testing while the…

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