Financing Climate Change Adaptation: Turning Risk into Resilience

The emergence of adaptation bonds, along with a growing emphasis on adaptation within sustainable finance taxonomies, reflects increasing market recognition of the importance of business resilience to climate change. This shift is backed by compelling data: according to the Environmental Finance database, the number of bonds with a climate change adaptation (CCA) category rose from just 39 in 2017 to 601 in 2024, more than a fourteen-fold increase. Issuance volumes surged from €23 billion to nearly €268 billion, underscoring the growing financial commitment to climate resilience.

Anchored in Articles 2 and 7 of the Paris Agreement, adaptation finance is positioned not only as a tool for climate resilience but also as a lever for sustainable development and poverty eradication. Supporting this view, recent research from the World Resources Institute shows that every dollar invested in adaptation and resilience yields over ten dollars in long-term benefits, ranging from avoided losses and economic gains to broader social and environmental impacts. This underscores the strategic and economic imperative of scaling adaptation finance.

ISS-Corporate analyzed the evolution of climate change adaptation financing through its Sustainable Bond Rating database, which comprises 1,634 outstanding green, social, and sustainability bonds (i.e. bonds that have been issued and remain active in the market until maturity or repayment) between 2017 and April 2025. The database is built on post-issuance data. This insight piece examines how adaptation finance is gaining momentum, including the sectors and instruments driving this growth shift, and the challenges that remain. It also highlights emerging trends and expectations for the future of adaptation finance.