Iberdrola leads the electricity sector in the Sustainability Yearbook 2025, prepared by S&P, having received the Top 1% S&P Global CSA Score. Europe's largest electric utility by stock market value has obtained the best score in the Dow Jones Best-in-Class Indices, the former Dow Jones Sustainability Index.
Sustainability Yearbook 2025 is a yearbook that includes 780 companies selected through the Corporate Sustainability Assessment (CSA) 2024 methodology, which ranks the companies analysed by sector.
The CSA is the leading assessment formula in its field, helping companies to make the link between sustainability and their business strategies. Covering more than 13,000 companies worldwide, it is an annual review of companies' sustainability practices and allows companies' performance to be compared across a wide of economic, environmental and social criteria. These criteria are relevant to the growing number of sustainability-focused investors and are expected to be financially relevant to their corporate success.
This leadership comes on top of the fact that Iberdrola has been in the Dow Jones Best-in-Class Indices for 25 consecutive years, making it the only European utility that has been present in the index for all this time.
The electricity company, one of the three largest in the world with a value of around 87 billion euros, has fulfilled the S&P requirements that determine the members of the index. It complies with an increasingly demanding methodology that includes more than 120 sections related to sustainability, distributed into three general pillars: respect for the environment, social commitment and good corporate governance.
Iberdrola is a global benchmark in sustainability. It has once again received the highest "A List" rating from CPD in the list of the world's most transparent companies in climate change, thanks to its commitment to disclosure, transparency, and environmental action. In addition to the Dow Jones Best-in-Class, it is present in the main international sustainability indices such as Moody's ESG, MSCI, Sustainalytics, ISS-ESG, EcoVadis and FTSE4Good, among many others.
Self-sufficiency and combating climate change
Iberdrola continues to make progress in its commitment to energy self-sufficiency and in its proactive role as an active agent in the fight against climate change. Iberdrola already exceeds 44,000 megawatts (MW) of renewable capacity installed worldwide and has an emission- free electricity production of 84%.
