The USD 100 billion goal and lessons learned for the future of international climate finance

The commitment to provide USD 100 billion annually in climate finance by 2020, agreed at COP25, was heralded as a major achievement from the conference. Long-term climate finance has grown and evolved over the past decade. This policy brief introduces the monetary goal’s main components, reviews their states of fulfilment, and provides a basis for discussing climate finance’s way forward, and upward.