The Institute for Climate Economics (I4CE) is an independent, non-profit think tank that puts economic analysis at the service of climate action.

We work to translate climate objectives into public policies and economic decisions: setting priorities, guiding investments, and designing strategies to reduce dependence on fossil fuels and adapt to climate change.

Our research aims to identify the levers of the transition, inform public debate on investment needs, and support decision-making that matches the scale of climate challenges. It is grounded in ongoing dialogue with those who design, finance, and implement climate action—from local authorities to the national government, from the European level to international frameworks, as well as with businesses.

Based on scientific rigor, independence, and transparency, our expertise helps strengthen the effectiveness, efficiency, and fairness of climate policies.

I4CE is a public-interest organisation, founded in 2015 by the Caisse des Dépôts and the French Development Agency.