Exhibit 99.1 ReNew Announces Results for the First Quarter of Fiscal Year 2026 (Q1 FY26) August 13, 2025: ReNew Energy Global Plc ("ReNew" or "the Company") (Nasdaq: RNW, RNWWW), a leading decarbonization solutions company, today announced its unaudited consolidated IFRS results for Q1 FY26. Operating Highlights: Note: the translation of Indian rupees into U.S. dollars has been made at INR 85.74 to US$ 1.00. See note below for more information. Key Operating Metrics As of June 30, 2025, our total portfolio ...