Disclosure attached.

Ref. No.: 01:SEC:LA:1 Dated: 22nd September 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 Scrip Code: 532555 Symbol: NTPC ISIN: INE733E01010 Sub: Intimation of ESG rating by CRISIL ESG Ratings & Analytics Limited Dear Sir/Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that the Company has received an Environmental, Social and Governance (ESG) rating/score from CRISIL ESG Ratings & Analytics Limited, a SEBI registered Category-I Subscriber-Pays ESG Rating Provider. NTPC has been assigned ESG Rating “Crisil ESG 62 [Category: Strong] ” by the aforesaid rating agency. The Company further clarifies that CRISIL ESG Ratings & Analytics Limited was not engaged by the Company for the aforesaid rating, and that the report was prepared independently by the said agency on the basis of information available in the public domain. This is for your information and record. Thanking you/ ध�वाद, Yours faithfully/ भवदीया, (Ritu Arora)/ (�रतु अरोड़ा) Company Secretary & Compliance Officer/ काप�रेट पहचान नम्बर : L40101DL1975GOI007966, टेल�फोन नं. : 011-24387333 फैक्स नं. : 011-24361018, ईमले : ntpccc@ntpc.co.in वेबसाइट: www.ntpc.co.in Registered Office: NTPC Bhawan, SCOPE Complex, 7 Institutional Area, Lodi Road, New Delhi – 110003 Corporate Identification Number: L40101DL1975GOI007966, Telephone No.: 011-24387333, Fax No.: 011-24361018, E-Mail: ntpccc@ntpc.co.in Website: www.ntpc.co.in