The 2026 BiGS Climate Innovators 100 List

February 4, 2026. News. "Researchers at Harvard Business School have released the BiGS Climate Innovators 100 list for the second year running, a ranking of publicly traded U.S. companies most involved in developing climate-related technologies and products according to their annual reports. New Harvard Research analyzed 10-K reports, the annual filings that all U.S. public companies submit to the Securities and Exchange Commission, to determine which companies are investing in climate solutions. The data is drawn from 2023 reports filed to the SEC in 2024. The analysis included the creation of a “climate solution measure,” which allowed the companies to be ranked according to a proprietary algorithm developed by Harvard Business School professors. The top 100 companies on the ranking are listed below, along with their scores and, where applicable, their ranking in the previous year. Only companies with $1 billion or more in 2023 revenue are included."