Monthly roundup · Cleantech · October 2026

Cleantech startup funding, October 2026: Rabot Energy's $50M Series B leads 20 rounds

By Millionrounds ResearchPublished 1 November 2026Updated 4 November 2026

We read 20 equity rounds in Cleantech announced in October 2026, raising $273M between them: 3% of all the rounds we read that month and 0% of the money. The largest was Rabot Energy's $50M Series B, led by Endeit Capital and DTCF. The median seed round was $1.8M, against $5.5M over the last twelve months across all sectors; at Series A it was $13M.

Equity rounds20in Cleantech, 16 with an amount
Raised$273Macross those rounds
Lead named70%of rounds say who led
Share of the month3%of rounds; 0% of the money

The biggest rounds

  1. 1Rabot EnergySeries B · Germany · led by Endeit Capital, DTCF$50M
  2. 2GreenCell MobilityGrowth · India · led by Impact Fund Denmark (formerly IFU)$35M
  3. 3OptivoltSeries A · United States · led by VXI Capital$32M
  4. 4MAXSeries B · Nigeria$29M
  5. 5Helical FusionSeries B · Japan$20M
  6. 6Navitas SolarGrowth · India$20M
  7. 7AmogySeries C · United States · led by The Export-Import Bank of Korea, Korea Eximbank$20M
  8. 8EpyrSeries A · France · led by SlateVC$17M
  9. 9RReclinkerSeries A · United Kingdom · led by Clean Growth Fund, AP Ventures$13M
  10. 10VECKTASeries A · United States · led by Origin Ventures$11M

Day by day

Equity rounds in Cleantech announced each day of October. The busiest day was 8 October, with 3.

1 October31 October

By stage, against the year

Each stage's median this month beside its twelve-month median: the sector's own where we hold enough rounds for a benchmark, otherwise the one across all sectors.

Pre-seed2$1.9Mthis month$2.0M12 months, all sectors
Seed5$1.8Mthis month$5.5M12 months, all sectors
Series A5$13Mthis month$20M12 months, all sectors
Series B4$29Mthis month$50M12 months, all sectors
Series C1$20Mthis month$100M12 months, all sectors
Growth3$28Mthis month$113M12 months, all sectors

Where

United States had the most Cleantech rounds this month.

Against the month

  • Rounds, Cleantech20
  • Rounds, all sectors733
  • Raised, Cleantech$273M
  • Raised, all sectors$59B

The whole of October 2026

Other sectors in October

411 roundsAI→100 roundsFintech→72 roundsHealthcare→67 roundsSoftware→67 roundsRobotics→56 roundsManufacturing→44 roundsSaaS→44 roundsConstruction→42 roundsHardware & Electronics→41 roundsBiotech→34 roundsBig Data & Analytics→33 roundsEnergy→33 roundsLogistics→32 roundsEnterprise Software→29 roundsAerospace & Space→29 roundsHealthtech→28 roundsCybersecurity→26 roundsDefence Tech→25 roundsCloud→24 roundsEntertainment→23 roundsB2C→23 roundsFinancial Services→22 roundsMedical Devices→19 roundsE-commerce→19 roundsFood & Beverage→18 roundsReal Estate→18 roundsDeeptech→18 roundsSemiconductors→17 roundsAgtech→16 roundsDeveloper Tools→15 roundsWeb3 & Crypto→15 roundsRetail→15 roundsMartech→14 roundsSupply Chain→14 roundsInsurtech→14 roundsTelecoms→14 roundsClimate Tech→13 roundsRegtech→13 roundsAutomotive & EVs→13 roundsChemicals & Materials→12 roundsFuture of Work→12 roundsB2B→12 roundsMedia→12 roundsGaming→11 roundsProfessional Services→11 roundsMarketplaces→11 roundsHR Tech→11 roundsEducation→11 roundsSalestech→10 roundsProptech→10 roundsPharma→10 roundsFashion→10 roundsTravel & Hospitality→