London – Sonnedix is proud to announce that it has once again been awarded the maximum five-star rating in the 2025 GRESB Infrastructure Assessment, marking the eighth year of top performance. The company achieved a perfect overall score of 100 out of 100 for the third consecutive year, and has been named Infrastructure Asset Sector Leader securing first place in both Renewables Superclass and Solar Power Class.
GRESB (Global Real Estate Sustainability Benchmark) assesses and benchmarks the environmental, social and governance (ESG) performance of assets worldwide. Its annual Infrastructure Assessment is widely recognised by investors and asset managers as the leading global ESG benchmark for infrastructure, guiding investment decisions and risk management as the industry transitions to a more sustainable future.
Sonnedix’s 2025 results highlight its leadership across all three ESG pillars – environmental, social, and governance – with perfect scores in areas such as leadership, policies, reporting, risk management, stakeholder engagement, greenhouse gas emissions, energy performance, employee engagement, and health and safety.
Axel Thiemann, CEO of Sonnedix, said:“Consistency is what builds trust, and our eighth consecutive five-star GRESB rating shows that sustainability is embedded in everything we do at Sonnedix. Achieving a perfect score for three years running is not only a recognition of our team’s dedication but also of our ability to anticipate and manage risks, seize opportunities, and deliver long-term value for our communities, partners, and investors.”
Sebastien Roussotte, CEO of GRESB, said:“Amid market uncertainty and shifting global priorities, GRESB participants continue to lead with action—demonstrating that responsible investing is not just resilient, but essential. GRESB Sector Leaders exemplify success in action. They set the pace for the industry, translating strong governance and operational excellence into real-world performance and long-term value.”
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About Sonnedix
Sonnedix is a global renewable energy company with almost two decades-long trajectory of sustainable growth. Sonnedix develops, builds, and operates renewable energy projects for the long-term, delivering innovative, tailored, and fully renewable, energy solutions to our customers.
Sonnedix currently has a total capacity of over 11.8GW, with almost 1GW under construction and a development pipeline of more than 6GW, across Chile, France, Germany, Italy, Japan, Poland, Portugal, Spain, UK, and USA. The company continues to expand its global footprint across OECD countries, through acquisitions and development of renewable energy projects.
For more information, please visit www.sonnedix.com
Contact: sonnedix@fticonsulting.com
About GRESB
GRESB is a mission-driven and industry-led organization providing standardized and validated Environmental, Social, and Governance (ESG) data to financial markets. Established in 2009, GRESB has become the leading ESG benchmark for real estate and infrastructure investments across the world, used by 150 institutional and financial investors to inform decision-making.
For more information, please visit GRESB.com