Funding trends 2026: Climate change mitigation philanthropy

In a time of converging climate, economic, geopolitical, and humanitarian crises, our analysis finds that total climate mitigation funding from foundations and individuals reached an estimated $11.7 billion to $18.4 billion in 2024. This range represents about 2.1% of total philanthropic giving worldwide, exceeding the 2% threshold for the first time.

How funding is distributed tells an important story: resources remain heavily concentrated in the United States and Europe, even as the energy transition accelerates across the Global South, where clean, affordable solutions are being embraced as a direct path to resilient economies and better lives.

This edition introduces new ways to map funding across sectors and understand where it is concentrated, where it is lacking, and where opportunities lie. The report also describes signals that indicate funding momentum held or even grew in 2025, but the full picture is still emerging.