adelphi Research gGmbH is a leading independent think tank and public policy consultancy committed to sustainable development and environmental policy. Founded in 2001 and based in Berlin, Germany, it operates as a non-profit, non-partisan organization, collaborating with governments, businesses, and civil society to advance sustainability and resilience in environmental governance.

adelphi’s mission is to drive climate action, resource efficiency, and economic transformation through research, policy advice, and capacity building. Its key focus areas include climate change mitigation and adaptation, biodiversity conservation, water governance, energy transition, and green finance.

Through international projects, adelphi fosters sustainability and climate resilience by shaping policies on sustainable finance, facilitating transnational climate partnerships, and empowering stakeholders in emerging economies. By bridging the gap between research and implementation, adelphi drives impactful solutions for a more sustainable future.