Top energy startups
Updated 23 Oct 2026
4,482
Startups
100
Rows shown
166,525
All startups
100 rows
| # | Company | City | Stage | Last round | Date | Total raised |
|---|---|---|---|---|---|---|
| 1 | Tether | Stockholm | Pre-seed | Pre-seed | 2025-06-19 | |
| 2 | Helion Energy | Everett | Series D+ | Series G | 2026-06-04 | $1.5B |
| 3 | Emerald AI | Washington | Series A | Series A | 2026-08-25 | $216.5M |
| 4 | Mainspring Energy | Menlo Park | Series D+ | Series F | 2025-04-14 | |
| 5 | Ultraviolette Automotive | bangalore-karnataka | Series D+ | Series E | 2026-09-23 | $220.2M |
| 6 | Type One Energy | Knoxville | Series B | Series B | 2026-10-06 | $370.5M |
| 7 | ARC Ride | London | Series A | Series A | 2026-09-08 | $53.0M |
| 8 | Antares | Los Angeles | Series C | Series C | 2026-07-27 | $604.0M |
| 9 | Base Power | Austin | Series D+ | Series D | 2026-08-03 | $2.3B |
| 10 | Helical Fusion | Tokyo | Series B | Series B | 2026-10-08 | $77.9M |
| 11 | Valar Atomics | El Segundo | Series B | Series B | 2026-08-03 | $1.3B |
| 12 | Crusoe | Denver | Series D+ | Series F | 2026-09-03 | $8.1B |
| 13 | Voltus | San Francisco | Series D+ | Series D | 2026-10-08 | $291.1M |
| 14 | Focused Energy | Darmstadt | Series A | Series A | 2026-05-27 | $361.7M |
| 15 | Proxima Fusion | Munich | Series B | Series B | 2026-07-07 | $693.2M |
| 16 | Amber Electric | Melbourne | Series D+ | Series E | 2026-09-21 | $159.5M |
| 17 | Reverion | Eresing | Series B | Series B | 2026-09-28 | $256.4M |
| 18 | VEIR | Woburn | Series C | Series C | 2026-10-08 | $221.7M |
| 19 | ElectricFish | San Carlos | Seed | Seed | 2025-04-29 | $2.7M |
| 20 | EnerVenue | Fremont | Series B | Series B | 2026-03-31 | $720.1M |
| 21 | Mazama Energy | Frisco | Series B | Series B | 2026-09-18 | $171.0M |
| 22 | Halcyon | San Francisco | Series A | Series A | 2026-03-16 | $31.8M |
| 23 | DG Matrix | Raleigh | Series A | Series A | 2026-02-18 | $80.0M |
| 24 | Sage Geosystems | Houston | Series B | Series B | 2026-01-21 | $114.0M |
| 25 | Metris Energy | London | Seed | Seed | 2026-09-21 | $7.5M |
| 26 | TAR | Austin | Series A | Series A | 2026-09-10 | $147.0M |
| 27 | Veremark | London | Series B | Series B | 2026-02-03 | $42.1M |
| 28 | AGent | Houston | Seed | Seed | 2026-08-13 | $17.0M |
| 29 | Mojave Energy Systems | Sunnyvale | Series B | Series B | 2026-09-23 | $48.5M |
| 30 | Ore Energy | Amsterdam | Series A | Series A | 2026-08-04 | $54.2M |
| 31 | Exowatt | Miami | Series B | Series B | 2026-02-28 | $140.0M |
| 32 | Inertia | San Francisco | Series A | Series A | 2026-02-11 | $450.0M |
| 33 | Cowboy Space | San Carlos | Series B | Series B | 2026-05-11 | $325.0M |
| 34 | Radiant | El Segundo | Series D+ | Series D | 2026-02-17 | $518.8M |
| 35 | Applied Computing | London | Series A | Series A | 2026-07-16 | $32.0M |
| 36 | Aalo Atomics | Austin | Series B | Series B | 2025-08-19 | $133.3M |
| 37 | Nomos | Berlin | Seed | Seed | 2026-09-15 | $25.1M |
| 38 | Star Catcher | Jacksonville | Series A | Series A | 2026-05-12 | $77.2M |
| 39 | Tem-Energy | London | Series B | Series B | 2026-01-26 | $91.9M |
| 40 | Chakr Innovation | New Delhi | Series C | Series C | 2025-09-22 | |
| 41 | Verse | San Francisco | Series B | Series B | 2026-06-18 | $80.2M |
| 42 | LiquidStack | Carrollton | Series B | Series B | 2024-09-19 | $40.0M |
| 43 | Gradiant | Woburn | Series D+ | Series E | 2026-05-18 | $442.4M |
| 44 | Rune Energy | San Francisco | Series A | Series A | 2026-09-16 | $50.3M |
| 45 | GridCARE | Redwood City | Series A | Series A | 2026-05-14 | $77.5M |
| 46 | Deep Intelligent Control | Singapore | Series B | Series B | 2026-09-08 | $29.0M |
| 47 | i2Cool | Hong Kong | Series B | Series B | 2026-09-04 | $12.8M |
| 48 | SolarSquare Energy | Mumbai | Series C | Series C | 2026-06-12 | $113.2M |
| 49 | Furo | Munich | Seed | Seed | 2026-09-10 | $4.6M |
| 50 | Voya Energy | Hayward | Series A | Series A | 2026-08-26 | $48.0M |
| 51 | Branch Energy | Houston | Series B | Series B | 2026-09-15 | $49.3M |
| 52 | GPS Renewables | bangalore-karnataka | Series C | Series C | 2026-06-04 | $138.4M |
| 53 | R3 Robotics | Foetz | Series A | Series A | 2026-02-05 | $32.3M |
| 54 | UniSieve | Zürich | Series A | Series A | 2026-10-08 | $19.7M |
| 55 | Nyobolt | Cambridge | Series C | Series C | 2026-05-06 | $174.4M |
| 56 | Artemis | Houston | Seed | Seed | 2026-03-04 | $6.0M |
| 57 | Bekia | Cairo | Seed | Seed | 2026-09-15 | $1.5M |
| 58 | Nova Fusion | Shanghai | Seed | Seed | 2026-08-31 | $350.3M |
| 59 | GameChange Solar | New York | Series A | Series A | 2023-02-18 | $151.7M |
| 60 | Plume | San Francisco | Seed | Seed | 2026-04-09 | $4.4M |
| 61 | Exponent Energy | bangalore-karnataka | Series B | Series B | 2026-06-10 | $65.4M |
| 62 | Instagrid | Stuttgart | Series C | Series C | 2024-01-23 | |
| 63 | Glydways | South San Francisco | Series C | Series C | 2026-04-14 | $382.5M |
| 64 | Andercore | Berlin | Series B | Series B | 2026-02-11 | $75.0M |
| 65 | Franklin Whole Home | Sydney | Series B | Series B | 2023-08-24 | $25.0M |
| 66 | Mana Battery | Broomfield | Seed | Seed | 2026-10-09 | $10.2M |
| 67 | Claros | Mclean | Seed | Seed | 2026-03-19 | $39.7M |
| 68 | Neela Biotech | Cambridge | Pre-seed | Pre-seed | 2026-10-08 | $2.8M |
| 69 | Standard Nuclear | Oak Ridge | Series A | Series A | 2026-01-26 | $186.5M |
| 70 | Physical Superintelligence | Cambridge | Seed | Seed | 2026-09-01 | $58.0M |
| 71 | Cambium | El Segundo | Series B | Series B | 2026-01-05 | $127.0M |
| 72 | Emobi | San Francisco | Seed | Seed | 2026-01-28 | $4.5M |
| 73 | Hephae Energy Technology | Spring | Series A | Series A | 2026-07-09 | $24.1M |
| 74 | Point2 Technology | San Jose | Series B | Series B | 2026-08-10 | $187.2M |
| 75 | Rebaba | Stockholm | Seed | Seed | 2026-09-09 | $5.1M |
| 76 | Mantle8 | Sassenage | Series A | Series A | 2026-05-13 | $42.3M |
| 77 | Outer Spaces | Los Angeles | Pre-seed | Pre-seed | 2026-10-06 | $8.0M |
| 78 | Insight M | Sunnyvale | Series D+ | Series E | 2025-06-20 | $130.7M |
| 79 | Ascend Elements | Westborough | Series D+ | Series D | 2025-06-16 | $1.7B |
| 80 | Entrix | Munich | Series B | Series B | 2026-03-25 | $74.8M |
| 81 | American Supercritical | Highlands Ranch | Pre-seed | Pre-seed | 2026-09-23 | $8.0M |
| 82 | EPYR | Paris | Series A | Series A | 2026-10-13 | $19.9M |
| 83 | Eion | Princeton | Series A | Series A | 2024-09-24 | $15.0M |
| 84 | Think AI | Riyadh | Pre-seed | Pre-seed | 2026-07-15 | $8.0M |
| 85 | TS Conductor | Arcadia | Series B | Series B | 2024-07-05 | $85.0M |
| 86 | Sceye | Moriarty | Series C | Series C | 2025-06-25 | $65.0M |
| 87 | Novele | New York | Series A | Series A | 2026-09-30 | $18.7M |
| 88 | ExploMar | Suzhou | Series A | Series A | 2026-09-16 | $39.0M |
| 89 | Yuma Energy | bangalore-karnataka | Series A | Series A | 2026-09-01 | $35.0M |
| 90 | Shizen Connect | Tokyo | Series A | Series A | 2026-05-25 | $17.0M |
| 91 | Fleetzero | Auburn | Series A | Series A | 2026-01-16 | $58.5M |
| 92 | Boldr | London | Seed | Seed | 2026-08-24 | $12.7M |
| 93 | Amber Semiconductor | Dublin | Series C | Series C | 2026-03-10 | $49.7M |
| 94 | LineVision | Boston | Series D+ | Series D | 2026-09-17 | $87.3M |
| 95 | Arrakis Technologies | London | Series A | Series A | 2026-07-22 | $37.5M |
| 96 | NxLite | Kitchener | Series A | Series A | 2026-07-16 | $54.7M |
| 97 | Basis | Takapuna | Series A | Series A | 2024-07-16 | |
| 98 | Certain Energy | London | Series A | Series A | 2026-08-26 | $13.6M |
| 99 | ElectronX | Chicago | Series A | Series A | 2025-11-14 | $61.5M |
| 100 | S.P.O.N.S.O.R. (SCOP) | Luxembourg | Seed | Seed | 2025-08-18 | $1.1M |
Table 1. Top energy startups, by total raised. Source: FundingWatcher. Data as of 23 October 2026. Base: 4,482.
Funding stages
Cities
Countries
Cite: FundingWatcher, 4,482 startups, 23 October 2026. https://fundingwatcher.com/startups/energy/