Clean Edge 100

The 2026 Clean Edge 100, our third annual ranking of the 100 top publicly traded clean-tech companies in clean energy, transportation, water, and the grid, finds continued global industry leadership in the U.S., Europe, and China. Eligible clean-tech companies are members of our global equity research universe of more than 800 companies and must receive at least 50% of their revenue from clean-tech activities (pure plays). Companies are ranked according to an equally weighted composite of market capitalization, revenue, and operating profit. Revenue and operating profit are adjusted by business exposure as evaluated by Clean Edge. 

U.S.-, Europe- and China-domiciled companies lead the pack this year with 27, 26, and 22 listings respectively, followed by Brazil with seven and Korea with four, reflecting the diversity of global clean-tech activity. U.S.-domiciled firms accounted for nearly $2.5 trillion of market capitalization ($1.6 trillion from Tesla alone), followed by European Union and U.K. companies with $1.2 trillion and Chinese firms with $716 billion in cumulative market capitalization respectively.

This year’s list of 100 top-ranked clean-tech companies includes energy storage & conversion behemoths BYD, CATL, and Tesla; grid infrastructure leaders Eaton, ABB Ltd., and Schneider Electric; and water innovators Ecolab, Veolia, and Xylem. In the sectoral breakdown of this year’s rankings, grid leads with 38 companies, followed by renewable energy with 28 and water with 19. Among the top 10 companies, five companies derive all or part of their clean-tech revenue from grid-related activities and four are key players in renewable energy. GE Vernova, new to the rankings this year, grew its grid solutions activities impressively last year, bringing the company to 53% of its revenue from grid and renewable energy activities, earning them a #3 spot on the leaderboard. 

For more information on this year’s rankings (including some of the notable companies that came in or dropped out), check out the 2026 Clean Edge 100 Data Dive.

The rankings listed below were updated on August 11, 2026, using market capitalization values as of July 15, 2026.