10 Energy & Climate startups
Built from funding announcements, public job boards, company websites and SEC filings — never from a login.
| Company | Sector | HQ | Last round | Raised | Pulse |
|---|---|---|---|---|---|
| Isometric AI certification that unlocks revenue, permitting, and investment. For every industry. | Carbon Markets | United Kingdom | Series A15 Sept 2026 | $47M | 92 |
| VAValar Atomics Valar Atomics is scaling nuclear energy for heavy industrial power and clean hydrocarbon fuel production. | Power Generation | — | Unknown3 Aug 2026 | $1.0B | — |
| RReverion | Power Generation | Germany | Unknown29 Sept 2026 | $167M | — |
| Kairos Power Building the future of clean energy through iterative development and vertical integration. Kairos Power's advanced reactors deliver reliable, safe nuclear power at scale. | Power Generation | — | Unknown22 Sept 2026 | $100M | — |
| WindBorne WindBorne designs, builds, and operates a constellation of long-duration smart weather balloons targeting the most critical data in the atmosphere. | Energy & Climate | — | Unknown6 Aug 2026 | $37M | — |
| RTReactive Technologies | Energy Storage & Grid | United Kingdom | Unknown28 Sept 2026 | $20M | — |
| MLMitti Labs | Carbon Markets | — | Series A6 Aug 2026 | $9.5M | — |
| PPstryk | Energy & Climate | Poland | Unknown30 Jul 2026 | $7.6M | — |
| Metris Energy The AI-native operating system for renewable energy. | Climate Software | United Kingdom | Unknown21 Sept 2026 | $4.7M | — |
| OEos.energy | Climate Software | Denmark | Unknown26 Aug 2026 | $1.1M | — |
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