TransAlta receives DOE order to keep Centralia Unit 2 operational

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Department of Energy Mandates Centralia Unit 2 Remain Available for Operation for Additional 90 Days

June 15, 2026 7:00 AM EDT

CALGARY, Alberta, June 15, 2026 (GLOBE NEWSWIRE) -- TransAlta Corporation (TransAlta or the Company) (TSX: TA) (NYSE: TAC) confirms that its subsidiary, TransAlta Centralia Generation LLC, has received an order (The Order) from the United States Department of Energy. The Order mandates that Centralia Unit 2 in Washington State remain available for operation, for a period of 90 days, until September 13, 2026.

Once in effect, TransAlta will continue to comply with the Order and to work with the U.S. Department of Energy and Washington state government in relation thereto.

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