Climate tech investment slips overall but equity funding rises in Q3 2026
Climate tech companies raised about $19.6 billion in the third quarter of 2026, a 7.6% drop from the prior quarter, according to Net Zero Insights. Equity funding rose 17% quarter-on-quarter and roughly 26% year-on-year to $15.8 billion, even as deal count fell to 686, the lowest quarterly level since 2021. Firm power companies, including fusion, fission, geothermal and storage firms, raised around $6.3 billion across 17 rounds, with the United States leading at $8.8 billion.
Overall climate tech funding reached about $19.6 billion in Q3 2026, down 7.6% from the previous quarter. Equity funding, however, climbed 17% from the prior quarter and about 26% from a year earlier to $15.8 billion, while deal count fell to 686, the fewest since 2021.
Series B rounds grew 50% from the previous quarter to $3.6 billion. Firm power companies—fusion, fission, geothermal and storage—raised roughly $6.3 billion across 17 rounds, including three $1 billion deals. The U.S. led with $8.8 billion across 184 deals, up 36%; the UK raised $1.5 billion, China $1.4 billion. Exits totaled 78, mostly M&A.
The shift toward fewer but larger equity deals could affect climate tech startups, workers, and communities awaiting cleaner power. Later-stage companies may advance pilot projects toward commercial deployment, potentially speeding fusion, storage, and geothermal options. Yet lower overall funding and fewer deals may make early-stage ventures struggle, possibly slowing innovation and job growth. Investors and policymakers may watch whether concentrated capital reaches diverse regions and technologies.