Algoma Steel Group Inc. Reports Unplanned Outage at Lake Superior Power Plant

SAULT STE. MARIE, Ontario, Aug. 17, 2026 (GLOBE NEWSWIRE) -- Algoma Steel Group Inc. (NASDAQ: ASTL; TSX: ASTL) (“Algoma” or “the Company”), a leading Canadian producer of steel plate and hot-rolled sheet products, today announced that it has experienced an unplanned outage at its Lake Superior Power (LSP) generating facility. One of the LSP turbine units detected an abnormal condition and was automatically taken offline. The remaining LSP units were not affected.

The Company’s technical teams, together with external specialists, are onsite assessing the condition of the affected equipment and evaluating various alternatives available to the Company and developing an appropriate plan to facilitate timely repairs. The Company is also bringing forward previously scheduled LSP and other operating maintenance during this period in order to reduce future planned downtime.