As per the attachment.

E D C L H O U S E 1 A, ELGIN ROAD K O L K A T A – 7 0 0 0 2 0 TEL : 033-4041 1983 / 1990 FAX :033- 2290 3298 CIN: L85110KA1995PLC017003 e-mail:edclcal@edclgroup.com website : www.edclgroup.com Ref : EDCL/SE/Comp./2026-27/018 Date : 25th September, 2026 1. The Manager, 2. The Secretary, Department of Corporate Services National Stock Exchange of India Ltd. BSE Limited, “Exchange Plaza”, Phiroze Jeejeebhoy Towers, 25th Floor, Bandra – Kurla Complex, Bandra (E), Dalal Street, Mumbai – 400 001 Mumbai – 400 051 Dear Sir, Sub : Closure of Trading Window This is to inform you that pursuant to the SEBI (Prohibition of Insider Trading) Regulations, 2015 the ‘Trading Window’ for dealing in the securities of the Company will remain closed for all Designated Employees and their Immediate Relatives, Directors & Promoters from 01st October, 2026. The Trading Window will open 48 hours after the announcement of the Un-audited Standalone and Consolidated Financial Results of the Company for the quarter and half year ended on 30th September, 2026 to the Stock Exchanges. This is for your information and record. Thanking you, Yours faithfully, for Energy Development Company Limited SNEHA NAREDI (Company Secretary & Compliance Officer)