Intimation is attached herewith.

DOC:SEC:1956/2026-27/217 September 14, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor, Plot No. C/1, Phiroze Jeejeebhoy Towers, G- Block, Bandra – Kurla Complex, Dalal Street, Bandra (East), Mumbai – 400 001 Mumbai – 400 051 SCRIP CODE: 500084 SCRIP CODE: CESC Dear Sir/Madam, Sub: Voluntary Intimation – Fire Incident at Panihati Distribution Sub-station The Company would like to inform that a fire incident occurred at its Panihati Distribution Sub-station in the afternoon of September 13, 2026. The incident was promptly attended to by the Company’s emergency response and operations teams. There were no casualties or injuries. Demonstrating the Company’s strong commitment to continuity and quality of power supply, approximately 80% of the affected supply was restored within two hours and 100% within approximately three and a half hours. The Company has insurance coverage on the plant and machinery and the insurers have been informed about the incident. The Company continues to accord the highest priority to safety, reliability and quality of service and has taken necessary measures to ascertain the cause of the incident and strengthen preventive measures, as appropriate. This intimation is being made voluntarily in the interest of transparency. Yours faithfully, For CESC Limited Jagdish Patra Company Secretary & Compliance Officer