2025 Clean 200

2025 Clean 200 Methodology

The Clean200 are the largest 200 public companies ranked by clean revenue. The ranking was first calculated on July 1, 2016, and publicly released on August 15, 2016, by Corporate Knights and As You Sow. The current list has been updated with data through January 29, 2025.

The Clean200 companies are ranked by their clean revenues in U.S. dollars. The data set is developed through assessment of a company’s revenue that aligns with the definitions laid out in the Corporate Knights Sustainable Economy Taxonomy, primarily sourced from Corporate Knights research. To be eligible, a company must earn more than 10% of total revenues from clean sources.

The Clean200 uses negative screens. It excludes carbon laggards in the cement industry, oil and gas companies and those found on the Global Oil & Gas Exit List, coal companies found on the Global Coal Exit List, all utilities that generate less than 50% of their power from green sources, the top 200 carbon reserve owners in the Carbon Underground 200 list, fossil-fuel financers found on the Banking for Climate Chaos list, fossil-fuel insurers found on the Insure Our Future list, companies involved in for-profit prison operations recommended for divestment by the Investigate project of the American Friends Service Committee, companies involved in severe environmental or human rights violation, and those which were involved in illegal activities where the ratio of fines, penalties or settlements over revenue for the most recent twelve months period exceeded 1.0%. In addition, the Clean200 excludes weapons companies, including major military arms manufacturers found on the Stockholm International Peace Research Institute (SIPRI) Top 100 arms-producing and military services list, as well as cluster munitions, nuclear weapons, and civilian firearm manufacturers screened on As You Sow’s Weapon Free Funds. The Clean200 also excludes palm oil, paper/pulp, rubber, timber, cattle, and soy producers that are screened on As You Sow’s Deforestation Free Funds; companies that use child or forced labor, are involved in the manufacture of harmful pesticides, and that engage in negative climate lobbying are not included.