POWERGRID declared as successful bidder under TBCB.

03rd September, 2026 To To The General Manager (Listing), The General Manager (Listing), National Stock Exchange of India Limited, BSE Limited, Exchange Plaza, C 1/G Block, Phiroze Jeejeebhoy Towers, Bandra-Kurla Complex, Dalal Street, Mumbai. Bandra (East), Mumbai Reference: NSE-SCRIP ID: POWERGRID; BSE Scrip Code: 532898 EQ – ISIN: INE752E01010 Sub.: POWERGRID declared as successful bidder under TBCB Dear Sir, In terms of Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended, this is to inform that Power Grid Corporation of India Limited (“POWERGRID”) has been declared as successful bidder under Tariff Based Competitive Bidding to establish Inter-State Transmission System for the project namely “Transmission system for Integration of Power from RE Projects in Lakadia REZ in Gujarat-Phase II (7500MW)” on Build, Own, Operate and Transfer (BOOT) basis, at quoted Annual Transmission Charges of Rs. 1,152.49 Crore. The Letter of Intent (LoI) has been received by POWERGRID on 03rd September, 2026. The project comprises establishment of new 765/400kV Lakadia-II Sub-station in the state of Gujarat. Further, the project involves construction of 765kV transmission lines traversing through the state of Gujarat along with the associated equipment and bays. The project also involves installation & commissioning of Synchronous condenser at Lakadia-II Sub-station. Thanking You, Yours faithfully, (Anjana Luthra) Company Secretary & Compliance Officer Corporate Office: “Saudamini”, Plot No. 2, Sector-29, Gurugram-122001, (Haryana) Tel.: 0124-2822999 & 2822000 Registered Office: B-9, Qutab Institutional Area, Katwaria Sarai, New Delhi-110 016. Tel: 011-26560112, 26560115 & 26560193, CIN : L40101DL1989GOI0381 21 Website: www.powergrid.in