Prior Intimation of Board Meeting of POWERGRID

23rd June, 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 Subject: Prior Intimation of Board Meeting of POWERGRID Dear Sir, In terms of Regulation 29(1) and 50(1) of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, this is to inform that a Meeting of “Board of Directors” of POWERGRID is scheduled to be held on Friday, 26th June, 2026 to inter-alia consider and approve “Raising foreign currency funds through External Commercial Borrowings (ECB) up to USD five hundred million ($500 mn) from Domestic / Foreign Banks.” As informed in our earlier letter of today i.e. 23rd June, 2026 (copy enclosed), the Trading Window’ of the Company will remain closed from Wednesday, 24th June, 2026 and shall continue to remain closed till 48 hours after the declaration of financial results of the Company for the quarter ending 30th June, 2026. Thanking You, Yours faithfully, (Anjana Luthra) Company Secretary & Compliance Officer Encl.: As above 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