Press Release

Regd. Office: P.O. Duliajan, Dist. Dibrugarh, Assam-786602 Corp Office: Plot No. 19, Sector 16-A, Noida-201301, Uttar Pradesh CIN: L11101AS1959GOI001148 Website: www.oil-india.com Ref. No. OIL/SEC/32-33/NSE-BSE Dated: 30.08.2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, Department of Corporate Service Plot No. C/1, G Block, Phiroze Jeejeebhoy Towers Bandra Kurla Complex, Dalal Street Bandra (E), Mumbai - 400 051 Mumbai - 400 001 Symbol: OIL Security Code: 533106 Sub: Press Release – OIL Green Energy Limited signs MoUs with Government of Haryana for four Integrated Waste-to-Clean-Energy Projects Ref : Regulation 30 of the SEBI (LODR) Regulations, 2015 Sir / Madam, Pursuant to Regulation 30 of the SEBI (LODR) Regulations, 2015, Press Release dated 30.08.2026 on the captioned subject, is submitted herewith for your information & records please. Thanking you, Yours faithfully, For Oil India Limited A.K. Sahoo Company Secretary & Compliance Officer Encl: As above Date: August 30, 2026 OIL Green Energy Limited signs MoUs with Government of Haryana for four Integrated Waste-to-Clean-Energy Projects OIL Green Energy Limited (OGEL), a wholly owned subsidiary of Maharatna CPSE Oil India Limited (OIL), signed Memoranda of Understanding (MoUs) with four Municipalities of Haryana — Gurugram, Faridabad, Hisar and Ambala — for development of Integrated CBG and Waste-to-Energy Projects across the respective clusters. The MoUs were signed in the presence of Hon'ble Chief Minister of Haryana, Shri Nayab Singh Saini, along with senior Ministers, Members of Parliament and senior officials of the Government of Haryana and OIL/OGEL. The four projects are proposed across the Hisar (500 TPD), Ambala (900 TPD), Faridabad (1,600 TPD) and Gurugram (2,000 TPD) clusters. Together, the facilities will have the capacity to scientifically process 5,000 tonnes of municipal solid waste per day and are expected to produce 70–75 TPD of Compressed Biogas (CBG) along with 50 MW of green power. The projects envisage an integrated waste processing and resource-recovery approach, wherein municipal solid waste will undergo scientific pre-processing and segregation to maximise resource recovery. Recyclable material will be recovered, the wet and biodegradable fraction will be utilised for production of CBG, while only the non- recyclable dry fraction will be utilised for generation of electricity through Waste-to- Energy facilities. This integrated approach is aimed at maximising resource recovery, optimising energy recovery from non-recyclable waste and reducing dependence on landfilling, while converting different fractions of municipal waste into valuable clean energy in the form of CBG and green electricity. The initiative will support Haryana's efforts towards scientific and sustainable municipal waste management while contributing to the national objectives of Waste-to-Wealth, circular economy and clean energy transition. The projects are also aligned with the Government of India’s GOBARdhan – National Circular Bioenergy Scheme 2026, which seeks to promote scientific waste management and accelerate the conversion of organic waste into CBG and other forms of clean energy. For OIL, the collaboration marks an important step in expanding its low-carbon energy portfolio through OGEL and advancing integrated waste-to-clean-energy solutions at scale. Issued by -Public Relations Department, Noida