Certificate under SEBI (Depositories and Participants) Regulations, 2018

07th July, 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: Submission of Disclosure as per Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018. Dear Sir, Please find enclosed herewith Certificates issued under Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018, by KFin Technologies Limited, the Registrar and Share Transfer Agent (RTA) of the Company, for the quarter ended 30th June, 2026. The letters from the RTA, confirming the above are enclosed for your reference please. 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 KFIN/PGC/CDSL/74(5) E/1 Date: 01‐07‐2026 CENTRAL DEPOSITORY SERVICES (INDIA) LIMITED REGD OFF: MARATHON FUTUREX, A WING 25TH FLOOR NM JOSHI MARG LOWER PAREL (EAST) MUMBAI ‐ 400 023 Dear Sir(s), Sub: Certificate under Regulation 74(5) for the quarter ended June 30,2026 We as Registrar to an Issue and Share Transfer Agent of the POWER GRID CORPORATION OF INDIA LIMITED, certify that the details of securities dematerialized/rematerialized during the aforesaid period, as required under Regulation 74(5) of SEBI (Depositories and participants) Regulations 2018 have been furnished to all the Stock Exchanges where the shares of the company are listed. Thanking You Yours faithfully, for KFIN TECHNOLOGIES LIMITED SASHIDHAR MANNAVA VICE PRESIDENT CC TO: POWER GRID CORPORATION OF INDIA LIMITED POWER GRID CORPORATION OF INDIA LIMITED B‐9 QUTAB INSTITUTIONAL AREA KATWARIA SARIA NEW DELHI 110116 KFIN/PGC/NSDL/74(5) E/1 Date: 01‐07‐2026 NATIONAL SECURITIES DEPOSITORY LIMITED TRADE WORLD 4TH FLOOR KAMALA MILLS COMPOUND SENAPATI BAPAT MARG LOWER PAREL MUMBAI ‐ 400 013 Dear Sir(s), Sub: Certificate under Regulation 74(5) for the quarter ended June 30,2026 We as Registrar to an Issue and Share Transfer Agent of the POWER GRID CORPORATION OF INDIA LIMITED, certify that the details of securities dematerialized/rematerialized during the aforesaid period, as required under Regulation 74(5) of SEBI (Depositories and participants) Regulations 2018 have been furnished to all the Stock Exchanges where the shares of the company are listed. Thanking You Yours faithfully, for KFIN TECHNOLOGIES LIMITED SASHIDHAR MANNAVA VICE PRESIDENT CC TO: POWER GRID CORPORATION OF INDIA LIMITED POWER GRID CORPORATION OF INDIA LIMITED B‐9 QUTAB INSTITUTIONAL AREA KATWARIA SARIA NEW DELHI 110116