Climate Change Performance Index 2025. Published annually since 2005, the climate change performance index (ccpi) is an independent monitoring tool that. The 2025 epi, published by the yale center for environmental law and policy and columbia university’s center for international earth science information network ranks 180.
This report, produced jointly by yale university and columbia university, summarizes key findings and trends from the 2025 environmental performance index (epi), a scorecard ranking 180. The climate change performance index is an instrument to enhance transparency in international climate politics.