Latest Climate tech Startup Funding Rounds
Companies working on energy, transport, industry and emissions. Explore the technologies and business models attracting investment.
- Rounds
- 446 Jan 1 – Oct 24, 2026
- Disclosed funding
- $23.3B 345 disclosed amounts
- Median round
- $12.5M Of disclosed amounts
| Company | Amount | Round | Sector | Country | Investors | Announced |
|---|---|---|---|---|---|---|
| PS PolyGone SystemsCompany profile Develops patented filtration systems to remove toxic microplastics from water Develops patented filtration systems to remove toxic microplastics from water | $4M | Seed | Climate tech | United States | Investors | |
| S SeasatsCompany profile Builds long-endurance autonomous surface vessels for defense commercial and scientific missions Builds long-endurance autonomous surface vessels for defense commercial and scientific missions | $20M | Series A | Climate tech, Defense tech | United States | Investors | |
| S SatVuCompany profile Provides space-based thermal intelligence data for defense security and infrastructure monitoring Provides space-based thermal intelligence data for defense security and infrastructure monitoring | £30M | Series A | Climate tech, Space tech | United Kingdom | Investors | |
| n nuuEnergyCompany profile Builds regional heat-pump installation businesses using digital tools and local teams Builds regional heat-pump installation businesses using digital tools and local teams | €4.3M | Seed | Climate tech | Germany | Investors | |
| A AepnusCompany profile Aepnus develops on-site electrochemical systems that turn industrial sodium-sulfate waste into caustic soda and sulfuric acid. Aepnus develops on-site electrochemical systems that turn industrial sodium-sulfate waste into caustic soda and sulfuric acid. | Undisclosed | Pre-Series AUndisclosed | Climate tech | United States | Investors | |
| UG Utility GlobalCompany profile Provides industrial decarbonization solutions using proprietary H2Gen technology Provides industrial decarbonization solutions using proprietary H2Gen technology | $100M | Series DSeries C+ | Climate tech | United States | Investors | |
| 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 |
Active investors in this selection
All investors →Ranked by rounds participated in · From Jan 1, 2026
- 1EU Innovation Fund
Epyr, Reverion, H2SITE
17rounds0led - 2Lowercarbon Capital
Stand, Type One Energy, Rainmaker
11rounds0led - 3High-Tech Gründerfonds
Rabot Energy, Veridue, reverse.fashion
8rounds0led - 4Gigascale Capital
Solcoa Industries, Planted, Light
8rounds0led - 5Eclipse
Stand, Prime Minute, Antora Energy
6rounds2led
Latest digests
Archive →Explore published rounds while the next edition is being prepared.