<div id="readability-page-1"><div> <div> , /PRNewswire/ -- CNOOC Limited (&#34;the Company&#34;, SEHK: 00883 (HKD counter) and 80883 (RMB counter), SSE: 600938) released its 2025 Environmental, Social and Governance (ESG) Report in Hong Kong today. <ul type="disc"> <li>Adhere to efficient governance and solidify the foundation for development</li> <li>Advance green transition and foster a sustainable ecosystem</li> <li>Fulfill social responsibility and share the benefits of development</li> </ul> Faced with profound adjustments in the global energy market and fragmentation of the climate governance landscape, CNOOC Limited adheres to the principle of pursuing progress while maintaining stability, and embeds ESG concepts into development strategy and the entire process of operation. ESG governance has been improved to safeguard the Company's high-quality growth. In 2025, the Company received numerous domestic and international accolades, including the &#34;Corporate Sustainability Leadership Awards – Gold Award&#34; from The Asset magazine and the &#34;China Listed Company Value Awards ESG&#34; from Securities Times, reflecting broad stakeholder recognition of the Company's high-quality development achievements. CNOOC Limited is committed to efficient governance. The Company endeavors to improve decision-making through building a diversified Board of Directors and enhancing the directors' capabilities. ESG-related mechanisms are optimized. Ten key tasks have been completed, including ESG indicator system optimization and climate-related disclosure studies. The Company continues to enhance its risk management and internal compliance systems. Due diligence reviews on ESG issues are conducted. Audits on risk management processes are carried out on a regular basis. All employees have signed the Letter of Commitment on Compliance. Anti-commercial bribery and anti-corruption trainings are arranged to ensure sound corporate governance. CNOOC Limited is steadily advancing green transition. The Company continues to optimize its product mix and enhances the capacity of clean energy supply. CNOOC Limited adheres to green and low-carbon production throughout the entire process. Energy efficiency has been improved. The application of shore power has been expanded, driving the consumption of green electricity to 1.08 billion kWh in 2025. Flare gas recovery has also achieved remarkable progress. Integrated development of hydrocarbon and renewable businesses has continued. The Company has made solid progress in offshore wind resource acquisition. Hainan CZ7 wind farm project and the world's first 16-MW Tension Leg Platform (TLP) floating wind power project are advancing in an orderly manner. Carbon-negative sectors are fostered. The Company has led the development of two national offshore CCUS standards, and successfully commissioned China's first offshore CCUS demonstration project at Enping 15-1. Offshore trials for deep-sea CO₂ hydrate solidification and sequestration have been carried out to explore &#34;shore-to-sea carbon sequestration&#34; potentials. The preliminary research on oil-gas-electricity-hydrogen-carbon comprehensive energy demonstration project has started. CNOOC Limited adheres to technology-led development. Its annual R&amp;D expenditure registered a 22% year-on-year increase. Digital and intelligent transformation is advanced. The unmanned rate of offshore platforms has been increasing steadily. &#34;Shenhai-1&#34; gas field is selected into China's first batch of pioneer-class smart factory cultivation list. CNOOC Limited actively fulfills its social responsibilities. Upholding the community co-building approach of &#34;EMPOWER-Empowering communities, limitless acts of kindness&#34;, the Company continues to implement public welfare projects in rural revitalization, educational support, and ecological protection. The total annual investment exceeds RMB 134 million, including RMB 74.68 million invested in rural revitalization, which has benefitted approximately 6 million people. In terms of production safety, the Company has been optimizing the accountability system to reinforce the foundation of &#34;Safe CNOOC&#34;. Safety improvement campaigns and hazard inspections and rectifications are carried out, to maintain a stable safety performance throughout the year. In line with its talent-driven strategy, the Company enhances employee care and engagement, promoting mutual growth between staff and the Company to improve the employees' sense of safety, belonging, and fulfillment. As for supply chain, CNOOC Limited has been deepening reforms and focusing on ESG-related issues. Compliance trainings for suppliers are implemented, to facilitate a green, win-win, and clean supply chain. CNOOC Limited enhances stakeholder communication and transparency in information disclosure. It has been rated as A-grade in the information disclosure assessment conducted by the Shanghai Stock Exchange for three consecutive years. Looking ahead, Mr. Zhang Chuanjiang, Chairman of the Company, said: &#34;CNOOC Limited will foster new quality productive forces for marine energy and resources development, and rely on a robust ESG management and disclosure system, to achieve high-quality and sustainable growth. We will strive to build a world-class energy and resources group with distinctive marine characteristics. By pursuing stable development, delivering superior performance, and fulfilling responsibilities, we aim to share the benefits of growth with all stakeholders. We look forward to joining hands with you to create a sustainable and prosperous future together.&#34; — End — Notes to Editors: More information about the Company is available at https://www.cnoocltd.com. *** *** *** *** This press release includes forward-looking information, including statements regarding the likely future developments in the business of the Company and its subsidiaries, such as expected future events, business prospects or financial results. The words &#34;expect&#34;, &#34;anticipate&#34;, &#34;continue&#34;, &#34;estimate&#34;, &#34;objective&#34;, &#34;ongoing&#34;, &#34;may&#34;, &#34;will&#34;, &#34;project&#34;, &#34;should&#34;, &#34;believe&#34;, &#34;plans&#34;, &#34;intends&#34; and similar expressions are intended to identify such forward-looking statements. These statements are based on assumptions and analyses made by the Company as of this date in light of its experience and its perception of historical trends, current conditions and expected future developments, as well as other factors that the Company currently believes are appropriate under the circumstances. However, whether actual results and developments will meet the current expectations and predictions of the Company is uncertain. Actual results, performance and financial condition may differ materially from the Company's expectations, as a result of salient factors including but not limited to those associated with macro-political and economic factors, fluctuations in crude oil and natural gas prices, the highly competitive nature of the oil and natural gas industry, climate change and environment policies, the Company's price forecast, mergers, acquisitions and divestments activities, &#34;health, safety, security and environment&#34; (HSSE) and insurance policies and changes in anti-corruption, anti-fraud, anti-money laundering and corporate governance laws. Consequently, all of the forward-looking statements made in this press release are qualified by these cautionary statements. The Company cannot assure that the results or developments anticipated will be realised or, even if substantially realised, that they will have the expected effect on the Company, its business or operations. *** *** *** *** *** *** *** *** For further enquiries, please contact: Liu Cui Media &amp; Public Relations CNOOC Limited Tel: +86-10-8452-6641 Fax: +86-10-8452-1441 E-mail: [email protected] Cheng Yao Ever Bloom (HK) Communications Consultants Group Limited Tel: +852 5540 0725 Fax: +852 2111 1103 E-mail: [email protected] SOURCE CNOOC Limited <img src="https://imageproxy.pbkrs.com/https://rt.prnewswire.com/rt.gif/query-RGF0ZUlkPTIwMjYwNDA5Jk5ld3NJdGVtSWQ9Q04zMDUzNSZUcmFuc21pc3Npb25fSWQ9MjAyNjA0MDkwNTM2UFJfTkVXU19VU1BSX19fX19DTjMwNTM1?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" original-src="https://imageproxy.pbkrs.com/https://rt.prnewswire.com/rt.gif/query-RGF0ZUlkPTIwMjYwNDA5Jk5ld3NJdGVtSWQ9Q04zMDUzNSZUcmFuc21pc3Npb25fSWQ9MjAyNjA0MDkwNTM2UFJfTkVXU19VU1BSX19fX19DTjMwNTM1"/></div> </div></div>

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CNOOC Limited has released its 2025 Environmental, Social and Governance (ESG) Report, highlighting its commitment to efficient governance, green transition, and social responsibility. The company has improved its ESG governance, received multiple accolades, and advanced its clean energy initiatives, including offshore wind projects and carbon capture technologies. CNOOC has invested significantly in community projects and safety measures, while enhancing stakeholder communication. Chairman Zhang Chuanjiang emphasized the company's goal of sustainable growth and building a world-class energy group with a focus on marine resources.

05:36 ETCNOOC Limited Released 2025 Environmental, Social and Governance Report