$2 Trillion and Stalling: Why the World’s Green Capital Flow Is Slowing in 2026

Global climate finance crossed the $2 trillion mark for the first time in 2024, reaching a record $2.008 trillion, but a sharp slowdown in growth has raised fresh concerns about whether the world can mobilise money fast enough to tackle climate change. According to the latest Global Landscape of Climate Finance 2026 report by the Climate Policy Initiative, annual climate finance grew by just 6% in 2024, compared to 16% in 2023 and 22 per cent in 2022. Researchers say the milestone reflects resilience in climate investment, but the widening gap between current flows and future needs remains deeply concerning.

Climate finance is growing, but not fast enough

The report estimates that the world needs at least $6.2 trillion annually by 2035 to stay aligned with global climate goals. For the next five years alone, average annual mitigation finance needs are projected at $7.8 trillion, rising further to $9 trillion a year between 2031 and 2035. That means current climate finance flows are still only around one third of what is required.

Researchers say climate finance has continued to expand despite years marked by the pandemic, energy shocks, debt crises and geopolitical instability. But the pace of growth is now slowing at a time when emissions cuts and climate adaptation efforts need to accelerate.

Barbara Buchner, global managing director at the Climate Policy Initiative, said the focus now must shift from maintaining momentum to scaling it up much faster if the world wants to stay within climate targets.

Domestic markets and private money are driving the surge

A major share of the growth came from domestic investment. Around $1.7 trillion, or 85% of all climate finance in 2024, was mobilised within national economies rather than through international flows. Households alone contributed $332 billion, largely through spending on electric vehicles, rooftop solar, heat pumps and efficient appliances. 

Private finance crossed $1.2 trillion and made up 62% of total climate finance, up from near-equal public-private shares in 2019 and 2020. Commercial financial institutions emerged as the single largest source, contributing $572 billion.

This growing role of private capital reflects how climate investment is increasingly becoming embedded in mainstream markets. But experts warn that much of this money remains concentrated in wealthier economies.

Developing countries still face a widening investment gap

The report highlights a persistent imbalance in where climate money is flowing. Emerging and developing economies, excluding China, continue to receive only a small share of global climate finance despite facing some of the most severe climate risks.

Adaptation finance remains especially underfunded. While mitigation continues to dominate, countries vulnerable to floods, droughts and rising seas still struggle to secure funding for resilience building. Estimates from the United Nations suggest developing countries need between $215 billion and $387 billion annually for adaptation alone, far above current flows.

The findings come at a critical moment as governments prepare for COP31, where climate finance is expected to remain one of the most contested issues. Developing nations are likely to push richer countries to deliver stronger financial commitments, arguing that without faster and fairer flows of capital, the gap between climate ambition and climate action will continue to widen.

References:

Global climate finance crosses USD 2 trillion, but pace needs to accelerate to reach climate goals 

https://glcf.climatepolicyinitiative.org/#sankeySection

https://news.un.org/en/story/2023/11/1143102

Banner image: Photo by micheile henderson on Unsplash 

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