Update on Commissioning of Captive Solar Power Project and supply of Solar Power to the Company.

MCL/SEC/2026-27 6th August, 2026 The Corporate Relations Department The Corporate Relations Department The National Stock Exchange of India Ltd. Department of Corporate Services Exchange Plaza, 5th Floor, BSE Limited Plot No. C/1, G-Block 25th Floor Bandra-Kurla Complex Phiroze Jeejeebhoy Towers Bandra (E), Mumbai 400 051 Dalal Street, Mumbai – 400 001 Security Code : MANGLMCEM Scrip Code: 502157 Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Update on Commissioning of Captive Solar Power Project and supply of Solar Power to the Company. Dear Sir/Madam, This has reference to our earlier intimation dated 5th September, 2024, whereby the Company had informed the Stock Exchanges regarding the execution of a Power Purchase Agreement (PPA) and Share Subscription and Shareholders' Agreement (SSSHA) for acquiring a captive equity stake in Suryadeep RJ-1 Projects Private Limited to procure solar power under the Captive Open Access model. Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we are pleased to inform you that Suryadeep RJ-1 Projects Private Limited has successfully commissioned its 15.17 MW (AC) / 22 MW (DC) Solar Power Plant located at Barmer District, Rajasthan, under the Group Captive Generation Mechanism through an Open Access Solar Photovoltaic (PV) Plant developed on a Build-Own-Operate (BOO) basis. We further wish to inform you that the Short-Term Open Access (STOA) for evacuation of power became effective from 6th August, 2026, and the supply of solar power to the Company has commenced from the same date. You are requested to take the above information on your records. Thanking You, Yours faithfully, For Mangalam Cement Limited Pawan Kumar Thakur Company Secretary & Compliance Officer Annexure-A Disclosure of Information pursuant to Regulation 30 of SEBI (LODR) Regulations, 2015 Sl. Particulars Details 1 Name of the Entity Suryadeep RJ-1 Projects Private Limited 2 Nature of Contract/Arrangement Power Purchase Agreement (PPA) under Captive Open Access 3 Product/Service Involved Solar Power Generation and Supply 4 Date of Original Intimation 5th September, 2024 5 Current Status / Milestone Achieved Short-Term Open Access (STOA) for evacuation of power became effective from 6th August, 2026, and the supply of solar power to the Company has commenced from the same date. 6 Date of Commissioning 6th August, 2026 7 Expected Financial/Operational Reduction in power costs and increased Impact share of renewable energy in the total power mix of the Company.