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Climate tech startup funding

Updated 23 Oct 2026

Energy and climate startups closed 848 funding rounds from October 2025 to September 2026, 4.2% of all startup rounds, and raised $19.5 billion in the rounds with a disclosed amount. Source: FundingWatcher, October 2026.

Value
848
Unit
funding rounds dated October 2025 to September 2026
Data as of
23 October 2026
Source
FundingWatcher, October 2026
Climate tech startup funding rounds per month by region, October 2025 to September 2026United StatesEuropeChinaRest of the worldUnited States, Oct 25: 9Europe, Oct 25: 18China, Oct 25: 11Rest of the world, Oct 25: 2159Oct 25United States, Nov 25: 8Europe, Nov 25: 17China, Nov 25: 22Rest of the world, Nov 25: 2067Nov 25United States, Dec 25: 17Europe, Dec 25: 14China, Dec 25: 19Rest of the world, Dec 25: 1161Dec 25United States, Jan 26: 23Europe, Jan 26: 9China, Jan 26: 34Rest of the world, Jan 26: 2086Jan 26United States, Feb 26: 25Europe, Feb 26: 14China, Feb 26: 10Rest of the world, Feb 26: 1665Feb 26United States, Mar 26: 27Europe, Mar 26: 23China, Mar 26: 21Rest of the world, Mar 26: 1283Mar 26United States, Apr 26: 18Europe, Apr 26: 13China, Apr 26: 11Rest of the world, Apr 26: 2062Apr 26United States, May 26: 16Europe, May 26: 16China, May 26: 4Rest of the world, May 26: 1147May 26United States, Jun 26: 19Europe, Jun 26: 19China, Jun 26: 12Rest of the world, Jun 26: 1565Jun 26United States, Jul 26: 24Europe, Jul 26: 18China, Jul 26: 25Rest of the world, Jul 26: 1784Jul 26United States, Aug 26: 25Europe, Aug 26: 12China, Aug 26: 13Rest of the world, Aug 26: 2070Aug 26United States, Sep 26: 28Europe, Sep 26: 23China, Sep 26: 18Rest of the world, Sep 26: 3099Sep 26
Figure 1. Climate tech startup funding rounds per month by region, October 2025 to September 2026. Source: FundingWatcher. Data as of 23 October 2026.

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Month

MonthRoundsShare of all roundsRaised
October 2025593.5%$771M
November 2025674.4%$520.6M
December 2025613.9%$1.5B
January 2026864.1%$1.2B
February 2026654.0%$1.3B
March 2026834.5%$1.2B
April 2026624.3%$796M
May 2026473.5%$1.1B
June 2026653.5%$1.1B
July 2026845.2%$2B
August 2026704.6%$2.9B
September 2026995.3%$5.2B

Table 1. Climate tech startup funding, by month. Source: FundingWatcher. Data as of 23 October 2026. Base: 848.

Stage

StageRoundsMedian round
Pre-seed120$900K
Seed408$2.5M
Series A174$14.9M
Series B95$24.7M
Series C33$30.1M
Series D+18$85M

Table 2. Climate tech startup funding, by stage. Source: FundingWatcher. Data as of 23 October 2026. Base: 848.

Previous values

MonthData as ofValue
October 202619 October 2026852
September 202628 September 2026846

Table 3. Climate tech startup funding, value at each monthly update. Source: FundingWatcher. Data as of 23 October 2026.

Method: Rounds dated October 2025 to September 2026, counted from the startup file of 23 October 2026. The file keeps each company's most recent pre-seed, seed, angel or Series A to J round only, so a company that raised twice in the window counts once. Industry is the Crunchbase category group. Raised sums the rounds with a disclosed amount. Full method.

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Energy and climate startups closed 848 funding rounds from October 2025 to September 2026, 4.2% of all startup rounds, and raised $19.5 billion in the rounds with a disclosed amount. Source: FundingWatcher, October 2026.
https://fundingwatcher.com/data/climate-tech-startup-funding/
<a href="https://fundingwatcher.com/data/climate-tech-startup-funding/"><img src="https://fundingwatcher.com/static/figures/climate-tech-startup-funding.png" alt="Energy and climate startups closed 848 funding rounds from October 2025 to September 2026, 4.2% of all startup rounds, and raised $19.5 billion in the rounds with a disclosed amount." width="1200" style="max-width:100%;height:auto"></a>
<p>Source: <a href="https://fundingwatcher.com/data/climate-tech-startup-funding/">FundingWatcher</a>, October 2026</p>

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