Update - Acquisition of additional equity shares of Toshiba JSW Power Systems Private Limited from Toshiba Corporation

Energy Limited Regd. Office : JSW Centre Bandra Kurla Complex Bandra (East), Mumbai - 400 051 CIN: L74999MH1994PLC077041 Phone: 022 – 4286 1000 Fax: 022 – 4286 3000 Website: www.jsw.in SEC / JSWEL 21st July 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza Dalal Street Bandra - Kurla Complex, Bandra (East) Mumbai - 400 001 Mumbai - 400 051 Scrip Code: 533148 Symbol: JSWENERGY- EQ Sub: Update - Acquisition of additional equity shares of Toshiba JSW Power Systems Private Limited from Toshiba Corporation Ref: Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Madam / Sir, We refer to our earlier intimation dated 19th May 2026 regarding the execution of definitive agreements by the Company to acquire an additional equity stake in Toshiba JSW Power Systems Private Limited (“TJPS”), by way of a secondary purchase of equity shares from Toshiba Corporation, Japan, subject to fulfilment of the conditions under the definitive agreements. Further to the aforesaid intimation, this is to inform you that the Company has completed the acquisition of the additional equity shares of TJPS from Toshiba Corporation. Consequent to the completion of the transaction, the Company’s shareholding in TJPS has increased to 20.7% on a non-diluted basis and 10.7% on a fully diluted basis. A Press Release in this regard is also attached. The above is for your information and record. Yours faithfully, For JSW Energy Limited Monica Chopra Company Secretary Part of O. P. Jindal Group Media Release July 21, 2026 JSW Energy completes acquisition of additional equity stake in Toshiba JSW Power Systems Private Limited Mumbai, India — July 21, 2026 – JSW Energy Limited (“the Company”) has completed the acquisition of additional equity shares of Toshiba JSW Power Systems Private Limited (“TJPS”) from Toshiba Corporation, Japan, by way of a secondary purchase of equity shares, for a total cash consideration of INR 150 Cr. Pursuant to the completion of the aforesaid transaction, the Company’s shareholding in TJPS has increased to 20.7% from 4.6% on a non-diluted basis, and to 10.7% from 2.4% on a fully diluted basis, thereby strengthening its ownership position in TJPS. TJPS is a joint venture between the Company, Toshiba Corporation and JSW Steel Limited. TJPS operates a state-of-the-art, Chennai-based manufacturing facility which can manufacture large-sized supercritical / ultra-supercritical steam turbine generators ranging up to 1,000 MW. The acquisition is a strategic step towards strengthening the Company’s access to steam turbine generators, enhancing supply chain resilience, and supporting its thermal capacity expansion plans. The Company has already placed orders for 1,600 MW of ultra-supercritical turbine-generators with TJPS, which enhances the Company’s visibility and access over a critical equipment supply chain. For more information/ queries: Investor Relations Team ir.jswenergy@jsw.in Page 1 of 1