The most active energy and climate startup investors
398 investors hold three or more energy and climate startups each, 1,938 portfolio startups in all. The most active here are Techstars (103), Plug and Play (84) and Y Combinator (59). 77 of them are accelerators.
Investors by their portfolio companiesRebuilt 6 Nov 2026
investors
398
portfolio startups
1,938
of them raised in 12 months
10
accelerators
77
Investors backing startups worldwide
| Investor | Startups here | Portfolio rounds, 12 mo | Latest activity |
|---|---|---|---|
 TechstarsAccelerator · United States · Solestial, Kyoto Fusioneering, LevelTen Energy | 103 | 97 | Oct 2026 |
 Plug and PlayAccelerator · United States · Swiftly, Starpath, Emulsion Flow Technologies | 84 | 154 | Nov 2026 |
 Y CombinatorAccelerator · United States · Zeitview, Posh, Oklo | 59 | 255 | Oct 2026 |
 Energy Impact PartnersVenture capital · United States · Arcadia, Heron Power, Mill | 56 | 19 | Sep 2026 |
 Elemental ImpactAccelerator · United States · Swiftly, SPAN, ConnectDER | 48 | 11 | Sep 2026 |
 ForesightAccelerator · Canada · Momentenergy, Awesense, Ayrton Energy | 44 | 4 | Sep 2026 |
 Clean Energy VenturesVenture capital · United States · ORLEN, BP, Chevron | 39 | 10 | Oct 2026 |
 Lowercarbon CapitalVenture capital · United States · Living Carbon, Remora, 1 Arc Power | 36 | 17 | Sep 2026 |
 High-Tech GründerfondsAccelerator · Germany · envelio, Proxima Fusion, node.energy | 31 | 47 | Nov 2026 |
 SOSVAccelerator · United States · Tidal Vision, Green Li-ion, Ayrton Energy | 28 | 35 | Oct 2026 |
 BRYCK Startup AllianceAccelerator · Germany · Upgrid, Einklang, Fusebox | 26 | 4 | Jan 2026 |
 SFC CapitalVenture capital · United Kingdom · Camio logo, Deploy Tech Ltd, Pipeline Organics | 24 | 81 | Oct 2026 |
 AntlerAccelerator · Singapore · Spoor, Sorted Technologies, Scale Energy | 24 | 53 | Nov 2026 |
 CEVGAngel network · ConnectDER, Ascend Elements, Raptor Maps | 24 | 7 | Oct 2026 |
 Climate 50Venture capital · Shell, Chevron, Groupe EDF | 24 | 1 | Mar 2026 |
 Aramco VenturesVenture capital · Saudi Arabia · Xpansiv, Utilidata, Form Energy | 21 | 9 | Aug 2026 |
 EndeavorAccelerator · United States · ABB, Wallbox, SunCulture | 20 | 55 | Oct 2026 |
 Future Energy Ventures GmbHVenture capital · Germany · Bidgely, tado°, nuventura | 20 | 5 | Sep 2026 |
 500 GlobalAccelerator · United States · JOLT, CURRENT, OhmConnect | 19 | 35 | Oct 2026 |
 DCVCVenture capital · United States · Kairos Power, Zeitview, Oklo | 19 | 27 | Sep 2026 |
 Union Square VenturesVenture capital · United States · Algorand, Remora, Transmutex | 19 | 21 | Oct 2026 |
 Congruent VenturesVenture capital · United States · SPAN, Gritt, Omnidian | 19 | 14 | Sep 2026 |
| HHelmholtzAccelerator · Germany · adjusted flow, AssetEnergy, INERATEC | 19 | 9 | Oct 2026 |
 Global BrainVenture capital · Japan · Solestial, Ionate, Commonwealth Fusion Systems | 18 | 30 | Oct 2026 |
 SET VenturesVenture capital · Netherlands · Kraken Technologies, Shell, Sensorfact | 18 | 6 | Jul 2026 |
 Extantia CapitalVenture capital · Germany · Aerones, LeydenJar Technologies, Bees & Bears | 17 | 11 | Oct 2026 |
 Toyota VenturesVenture capital · United States · Relectrify, Avalanchefusion, Living Carbon | 16 | 17 | Oct 2026 |
 AP VenturesVenture capital · United Kingdom · Plug Power, Fairbrics, Lydian | 16 | 4 | Aug 2026 |
 RedstoneVenture capital · Germany · thermondo, Voltfang, Virta | 15 | 16 | Sep 2026 |
 Engine VenturesVenture capital · United States · Commonwealth Fusion Systems, Form Energy, Lilac Solutions | 15 | 15 | Sep 2026 |
 better venturesVenture capital · Germany · ABSORA, Encosa Energy, autarc | 15 | 13 | Oct 2026 |
 Energize CapitalVenture capital · United States · Amperon, TWAICE, PVcase | 15 | 8 | Aug 2026 |
 Omnes CapitalVenture capital · France · Proxima Fusion, Ilmatar, VALOREM Energies Finland Oy | 15 | 6 | Oct 2026 |
 Nucleation CapitalVenture capital · Atomic Insights, Blue Energy, Aalo Atomics | 15 | 6 | Sep 2026 |
 YES!DelftAccelerator · Netherlands · ABB, Thekitepower, Tiler | 15 | 3 | Jun 2026 |
 Ara PartnersPrivate equity · United States · px Group, Genera Inc, Utility Global | 15 | – | – |
 BMW i VenturesVenture capital · United States · HeyCharge, Charge Point, ONE | 14 | 13 | Aug 2026 |
 Emerald Technology VenturesVenture capital · Switzerland · Thea Energy, INERATEC, Paptic | 14 | 11 | Aug 2026 |
 Contrarian VenturesVenture capital · Lithuania · PVcase, Delfos, Bees & Bears | 14 | 7 | Jul 2026 |
 Soma CapitalVenture capital · United States · Nectar, Validere, Living Carbon | 13 | 59 | Oct 2026 |
The most backed startups worldwide
| Startup | Investors in this list |
|---|---|
 Proxima Fusion | 11 |
 Commonwealth Fusion Systems | 10 |
 Aalo Atomics | 9 |
 Twelve | 8 |
 Basepowercompany | 7 |
 Radiant Nuclear | 7 |
 Form Energy | 7 |
| BBoston Metal | 7 |
 INERATEC | 7 |
 Living Carbon | 7 |
 Solugen | 7 |
 Gritt | 6 |
 Kyoto Fusioneering | 6 |
 node.energy | 6 |
 Arcadia | 6 |
Raising a round?
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Questions
Who invests in energy and climate startups?
398 investors hold three or more energy and climate startups each, 1,938 portfolio startups in all. The most active here are Techstars (103), Plug and Play (84) and Y Combinator (59). 77 of them are accelerators.
How is this list built?
From what each investor holds: the portfolio page it publishes, the Y Combinator directory and the announced rounds that name it. An investor counts for a sector when at least three of its portfolio companies are based there; the list is rebuilt every night from 2,414 portfolios.
Source: investors' portfolio pages and announced rounds, 2,414 portfoliosUpdated 6 Nov 2026MethodologyJSONCC BY-SA 4.0