TAC ▲ +0.1% - TransAlta Corporation $TAC - Department of Energy Mandates Centralia Unit 2 Remain Available for Operation for Additional 90 Days TransAlta rose 0.1% after the Department of Energy mandated that its Centralia Unit 2 power plant remain available for operation for an additional 90 days, extending its operational timeline beyond previously planned retirement. The extension preserves near-term generation capacity and revenue from the facility during the mandated period. 14-SEP-2026 07:01 AM ET