The Adaptation Pipeline Problem

Why climate plans do not automatically become financeable projects

Climate adaptation is often described as a shortage of finance. The numbers support the concern. UNEP’s Adaptation Gap work continues to show a large difference between developing-country adaptation needs and current international public finance. ADB has similarly highlighted the scale of adaptation investment required across Asia and the Pacific. But a financing gap is not the same thing as a pipeline.

Money cannot finance an intention. It finances a sufficiently defined use of capital. That means a location, an implementing institution, a technical concept, costs, risks, benefits, safeguards, procurement arrangements, revenue or public-value logic, and some credible mechanism for maintaining the asset or service after the project ends.

Many adaptation priorities are real but remain several steps away from that condition. A heat action plan may identify vulnerable populations without specifying an investable programme. A coastal strategy may recommend nature-based protection without resolving land tenure or maintenance. A city may know that flooding is worsening while lacking project preparation capacity to convert that knowledge into a bankable or budget-ready package.

This suggests that adaptation has a formation problem as well as a capital problem. The missing layer is often the work that converts risk intelligence into a project or programme that another institution can approve and finance.

Project preparation sounds administrative, which is probably why it is routinely undervalued. In reality it is where many of the hardest choices occur. What problem is being solved? Who benefits? Who owns the asset? Which risks should the public sector absorb? Which can be transferred? How will future climate conditions be incorporated? What data are sufficient for a decision? Which interventions should be bundled, and which should remain separate?

The private-finance debate can obscure this. Investors are sometimes criticised for not funding adaptation, while investors respond that projects are too small, early-stage or uncertain. Both can be right. The mistake is to assume that the solution is simply to make adaptation more attractive to private capital. Some adaptation is a public good and should remain publicly financed. The more important task is to make each intervention ready for the kind of capital that actually fits it.

There is a counterargument: development banks and climate funds already provide readiness and project-preparation support. That is true. The problem is less the complete absence of facilities than the fragmentation of support and the distance between local problems and national or international funding processes. Preparation often begins after a funding window appears rather than being maintained as a standing capability.

This is where philanthropy may have a distinctive role. It can finance early diagnostics, local technical capacity, stakeholder organisation, data, pilots and transaction costs that large capital providers struggle to fund efficiently. If done well, this is not generic capacity building. It is targeted investment in the conditions that allow a credible programme to emerge.

Governments also need to treat project preparation as infrastructure. A city that repeatedly faces climate risk should not have to invent a project-development process from scratch each time. It needs standing teams, data, standard methods, pre-approved partners and a pipeline connected to budgets and external finance.

The deeper implication is that adaptation finance discussions should ask two separate questions. First: is enough capital available? Second: are enough high-quality, institutionally owned adaptation propositions being formed? If the second answer is no, increasing the first number will not automatically produce action.

Adaptation will scale when risk intelligence, public institutions and capital formation are connected. The pipeline is not a list of projects. It is a capability to keep turning recognised risks into things that can actually be funded and delivered.

Sources and further reading

• UNEP, Adaptation Gap Report 2025.

• Asian Development Bank, Asia-Pacific Climate Report 2024 and related adaptation finance work.

• Green Climate Fund readiness and project-preparation architecture; CDP guidance on Asian city climate-project pipelines.