Disclosure attached.

Ref. No.: 01:SEC:LA:1 Dated: 30th October 2026 BSE Limited National Stock Exchange of India Limited Department of Corporate Services, Listing Department, Floor 25, PJ Towers, Dalal Street, Exchange Plaza, Bandra-Kurla Complex, Bandra (E), Mumbai-400 001 Mumbai-400 051 25वी ंमंिजल, पी. जे. टावस(cid:330), दलाल (cid:720)(cid:332)ीट, मुंबई – 400001 ए(cid:411)च(cid:336)ज (cid:600)ाज़ा, बां(cid:363)ा-कु ला(cid:330) कॉ(cid:817)(cid:600)े(cid:411), बां(cid:363)ा (पूव(cid:330)), मुंबई-400 051 Scrip Code: 532555 Symbol: NTPC ISIN: INE733E01010 Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/ Madam, Please find attached herewith disclosure dated 29th October 2026 made by our subsidiary NTPC Green Energy Limited (NGEL) regarding declaration of Commercial Operation of fifth part capacity of 95.6 MW of Kalasar Solar Energy Project, Bikaner, Rajasthan, out of 650 MW of Solar component under 500 MW REMCL RTC Project of NTPC Renewable Energy Limited, a step-down subsidiary of NTPC Limited through NGEL w.e.f. 00:00 hrs of 30th October 2026. With this, the total installed capacity of NTPC group stands at 91,668 MW and commercial capacity at 90,588 MW. This is for your information and record. Thanking you/ ध(cid:586)वाद, Yours faithfully/ भवदीया, (Ritu Arora)/ ((cid:303)रतु अरोड़ा) Company Secretary & Compliance Officer/ Encl.: as above