Closure of Trading Window.

September 28, 2026 Scrip Code- 533122 RTNPOWER BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, Bandra Kurla Complex Dalal Street, Bandra (East), MUMBAI– 400 001 MUMBAI-400 051 Dear Sir/Madam, Sub: Closure of Trading Window Ref: Regulation 9 of Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015 read with Schedule B thereof. In compliance with the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended, upto date, we wish to inform that the Trading Window of RattanIndia Power Limited (the “Company”) will be closed from October 01, 2026, in terms of the Company’s Code of Conduct for Regulating, Monitoring and Reporting Trading by designated persons & their immediate relatives and shall open, 48 hours after the declaration of the Un-audited Financial Results of the Company for the quarter and half year ending on September 30, 2026. The date of the Board meeting of the Company for approval of the aforesaid Un-audited Financial Results shall be intimated in due course. You are requested to take the above information on records. Thanking you, Yours faithfully, For RattanIndia Power Limited Lalit Narayan Mathpati Company Secretary & Compliance Officer RattanIndia Power Limited CIN: L40102DL2007PLC169082 Registered Address: A-49, Ground Floor, Road No. 4, Mahipalpur, New Delhi - 110037 Website: www.rattanindiapower.com; Email ID: ir_rpl@rattanindia.com; Phone: 011 46611666; Fax: 011 46611777