Indigrid Infrastructure Trust has informed the Exchange regarding Disclosure of material issue

INDIGRID INVESTMENT MANAGERS LIMITED Date: October 28, 2026 B S E Limited National Stock Exchange of India Ltd Department of Corporate Services Listing Department Phiroze Jeejeebhoy Towers Exchange Plaza, C/1, Block G, Bandra-Kurla Dalal Street, Mumbai — 400 001 Complex, Bandra (East), Mumbai — 400 051 Security Code- 540565 Symbol- INDIGRID Sub: Updates on Rajasthan BESS Private Limited Dear Sir/ Madam, Pursuant to Regulation 23 and/ or any other applicable provisions of the Securities and Exchange Board of India (Infrastructure Investment Trusts) Regulations, 2014, as amended from time to time read with applicable circulars and guidelines issued thereunder (“InvIT Regulations”), other applicable laws and regulations, we hereby inform you that Rajasthan BESS Private Limited ("RBPL"), a special purpose vehicle of IndiGrid Infrastructure Trust, has successfully achieved Commercial Operation Date ("COD") on October 27, 2026. RBPL project involves setting up of a 250 MW / 500 MWh Standalone Battery Energy Storage System in Rajasthan. The project is under Build Own Operate (“BOO”) model and shall have an annual revenue of over INR 71 Crore with a concession tenure of 12 years. RBPL has been developed in partnership with British International Investment Plc. (“BII”) and KNI India AS (“KNI”), a joint investment vehicle of Norfund and KLP. BII and KNI presently hold minority stakes in RBPL. Following the achievement of COD, IndiGrid Infrastructure Trust shall provide an exit to BII and KNI in accordance with the terms of the Share Purchase Agreement and the InvIT Regulations, and the same shall be intimated to the stock exchanges in due course. You are requested to take the same on your record. Yours sincerely, For and on behalf of IndiGrid Investment Managers Limited Representing IndiGrid Infrastructure Trust as its Investment Manager Urmil Shah Company Secretary & Compliance Officer ACS-23423 Axis Trustee Services Limited The Ruby, 2nd Floor, SW 29 Senapati Bapat Marg Dadar West, Mumbai 400 028 Maharashtra, India IndiGrid Investment Managers Limited Registered & Corporate Office: Unit No. 101, First Floor, Windsor, Village KoleKalyan, off CST Road, Vidyanagari Marg, Kalina, Santacruz (East), Mumbai – 400 098, Maharashtra, India CIN: U28113MH2010PLC308857 Ph: +91 72084 93885 | Email: complianceofficer@indigrid.com | www.indigrid.co.in