Which Energy Companies Have Made the CDP's 2025 A List?

Almost 900 global organisations have been named on CDP’s (Carbon Disclosure Project) Corporate A List thanks to their commitments to disclose detailed information about their climate performance and energy management strategies.

CDP remains the only independent environmental disclosure platform of its kind, compiling and examining environmental data from companies, cities, states and regions worldwide.

For the 2025 assessment, more than 22,100 companies and 1,000 local authorities submitted data — a scale that shows how central energy efficiency, renewable investment and carbon reduction have become to corporate and civic planning.

What is the CDP’s A List?

CDP’s Corporate A List names the most advanced companies when it comes to having a positive impact on the climate and the environment.

Global companies have the chance to voluntarily respond to the CDP questionnaire, which includes 15 sections about businesses’ climate strategies, their environmental commitments and the evaluation of their greenhouse gas emissions.

The more-than-22,000 companies that disclosed data through CDP this year represent more than half of global market capitalisation, including some of the world’s largest and most impactful companies.

Sherry Madera, CEO of CDP, says: “Markets are sending an unmistakable signal: clear, consistent environmental data is indispensable for sound decision-making.

“The momentum behind disclosure in 2025 shows that organisations of every size and sector recognise the value of transparent information to strengthen resilience, support innovation and unlock investment.

“CDP’s A List reflects the leading examples of this ambition, but the real story lies in the global commitment to making environmental data visible and actionable.

“As investors, policymakers and companies rely ever more heavily on these insights, disclosure remains one of the most powerful drivers of Earth-positive progress.”

Which energy companies made the 2025 list?

Several energy sector firms have been recognised by CDP this year for their environmental transparency and performance.

Siemens Energy secured an A rating for the second consecutive year, joining an elite group of energy technology firms demonstrating leadership in climate action. The German company, which provides turbines, grid infrastructure and renewable energy technologies, was one of approximately 25,000 companies evaluated globally.

In the same climate tech bracket, Schneider Electric was once again recognised for the role it plays in enabling the energy transition. 

When it comes to energy producers, Iberdrola was named on the A List for a fifth year running, reaffirming its position as one of the world's most sustainable providers.

There were also A ratings for providers including Aydem, Drax, Envision, Neoenergia and Snam.

Corporate leaders pushing the energy transition

Of course, it was not just energy companies included on this year's A List. Firms from every sector, from manufacturing to technology, disclosed their energy and climate performance to CDP throughout 2025.

France, Turkey and Japan emerged as leaders in transparency, each with a strong proportion of A List companies relative to those assessed.

A total of 877 companies made the Corporate A List, with 23 achieving coveted Triple A status, reflecting top performance in climate, forests and water management.

The growing list of top scorers since 2023 illustrates that for many businesses, controlling energy use and investing in renewables align with commercial success.

Sony, for example, maintained its status for the tenth time with its Road to Zero plan, committing to a zero environmental footprint by 2050 and net zero emissions by 2040.

Carlsberg also made the list, earning an A in climate and an A– for water security.

Simon Boas Hoffmeyer, VP, Global Head of Sustainability and ESG at Carlsberg, posted on LinkedIn: “Exciting news. Carlsberg Group has been recognised on CDP’s A List, highlighting our leadership in climate transparency and action.

“This puts us in the top 4% of companies assessed by CDP - where we like to be.

“This recognition reflects the unwavering effort and dedication of our colleagues and partners in embedding climate action into decision-making – a huge milestone on our journey TowardsZERO.”