Latest Climate tech Startup Funding Rounds
Companies working on energy, transport, industry and emissions. Explore the technologies and business models attracting investment.
- Rounds
- 410 Jan 1 – Oct 12, 2026
- Disclosed funding
- $23.1B 334 disclosed amounts
- Median round
- $13M Of disclosed amounts
| Company | Amount | Round | Sector | Country | Investors | Announced |
|---|---|---|---|---|---|---|
| RF Realta FusionCompany profile Develops compact magnetic mirror fusion technology for on-site industrial heat and power Develops compact magnetic mirror fusion technology for on-site industrial heat and power | $9.5M | Growth | Climate tech | United States | Investors | |
| N NocomedCompany profile Develops platform to measure report and reduce healthcare supply chain emissions Develops platform to measure report and reduce healthcare supply chain emissions | €650K | Seed | Climate tech, Healthtech | Ireland | Investors | |
| AE Alva EnergyCompany profile Developer of standardized upgrades that increase output from existing nuclear power plants. Developer of standardized upgrades that increase output from existing nuclear power plants. | $33M | Series A | Climate tech | United States | Investors | |
| IE Develops fusion-energy technology. | $450M | Series A | Climate tech | United States | Investors | |
| PO Project OmegaCompany profile Recycles spent nuclear fuel into long-duration power sources and critical materials Recycles spent nuclear fuel into long-duration power sources and critical materials | $12M | Undisclosed | Climate tech | United States | Investors | |
| x xWattsCompany profile Develops AI-driven energy management software to optimize energy use in real estate portfolios Develops AI-driven energy management software to optimize energy use in real estate portfolios | £1.6M | Seed | Climate tech | United Kingdom | Investors | |
| HH Hauler HeroCompany profile Provides AI-powered software platform for waste management companies including CRM billing and routing Provides AI-powered software platform for waste management companies including CRM billing and routing | $16M | Series A | Climate tech, Enterprise software | United States | Investors | |
| N NatilusCompany profile Develops hyper-efficient blended-wing aircraft for commercial and defense aviation Develops hyper-efficient blended-wing aircraft for commercial and defense aviation | $28M | Series A | Climate tech, Mobility | United States | Investors | |
| V VesiroCompany profile Develops software that optimizes Elasticsearch performance to reduce server energy use Develops software that optimizes Elasticsearch performance to reduce server energy use | €1.6M | Seed | Climate tech, Developer tools | Finland | Investors | |
| CA Capalo AICompany profile Develops software to maximise the value of battery energy storage systems across electricity markets Develops software to maximise the value of battery energy storage systems across electricity markets | €11M | Series A | Climate tech | Finland | Investors |
Active investors in this selection
All investors →Ranked by rounds participated in · From Jan 1, 2026
- 1Lowercarbon Capital
Type One Energy, Rainmaker, Rune
10rounds0led - 2Gigascale Capital
Solcoa Industries, Planted, Light
8rounds0led - 3High-Tech Gründerfonds
Veridue, reverse.fashion, Qurie
7rounds0led - 4Breakthrough Energy Ventures
Type One Energy, Planted, FORM ENERGY
6rounds1led - 5EIC Fund
Reverion, Circular Materials, Proxima Fusion
6rounds0led
Latest digests
Archive →Explore published rounds while the next edition is being prepared.