Schedule of Webinar for Investors and Analysts on Financial Performance of POWERGRID for Q1 ended 30.06.2026.

03rd August, 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.: Schedule of Webinar for Investors’ & Analysts’ on Financial Performance of POWERGRID for 1st quarter ended 30th June, 2026 (FY 2026-27). Dear Sir, In terms of Regulation 30 of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended, we wish to inform that POWERGRID is organising a Webinar on Friday, 07th August, 2026 at 11:00 A.M. (IST) wherein Senior Management team will discuss the Company’s business and outlook post the declaration of financial results for the 1st quarter ended 30th June, 2026 (FY 2026-27) and interact with the Analysts and Investors. The details of Webinar are enclosed herewith. Kindly take the above information on record. 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 Webinar Friday, 7th August, 2026 at 11:00 hrs. (India Time) Webinar is being organized with the management of Power Grid Corporation of India Limited to discuss Company's business and outlook post the declaration of financial results for 1st Quarter ended 30th June, 2026 (FY 2026-27) Webinar Registration: Event Link Shri Burra Vamsi Rama Mohan, Chairman & Managing Director [with additional charge of Director (Projects)] Management Participants: Dr. Yatindra Dwivedi, Director (Personnel) [with additional charge of Director (Finance)] Shri Naveen Srivastava, Director (Operations) For further information, please contact: Mr. Mohit Kumar: Phone: +91 22 6807 7419, E-mail: kumar.mohit@icicisecurities.com Mr. Mahesh Patil: Phone: +91 22 6807 7230, Email: mahesh.patil@icicisecurities.com