Latest Climate tech Startup Funding Rounds

Companies working on energy, transport, industry and emissions. Explore the technologies and business models attracting investment.

This page showsSector: Climate tech
Rounds
65
Sep 13 – Oct 12, 2026
Disclosed funding
$1.6B
46 disclosed amounts
Median round
$8.1M
Of disclosed amounts
65 rounds
Funding rounds
CompanyAmountRoundSectorCountryInvestorsAnnounced
Kairos PowerClimate tech · United StatesCompany profile

A nuclear technology company developing fluoride salt-cooled high-temperature reactors for low-carbon electricity generation.

A nuclear technology company developing fluoride salt-cooled high-temperature reactors for low-carbon electricity generation.

≤$100MStrategic investment and engineering collaborationUndisclosedClimate techUnited StatesInvestors
Vaulted DeepClimate tech · United StatesCompany profile

Vaulted Deep builds and operates underground infrastructure for organic-waste disposal and carbon removal.

Vaulted Deep builds and operates underground infrastructure for organic-waste disposal and carbon removal.

≤$35MDebt facilityUndisclosedClimate techUnited StatesInvestors
NUNOSAgritech · GermanyCompany profile

NUNOS builds systems that recover nutrients from cattle manure and biogas digestate, turning agricultural waste streams into higher-value fertilizer for farms and biogas operators.

NUNOS builds systems that recover nutrients from cattle manure and biogas digestate, turning agricultural waste streams into higher-value fertilizer for farms and biogas operators.

€570KPre-SeedPre-seedClimate tech, AgritechGermanyInvestors
R3 LithiumClimate tech · United StatesCompany profile

A battery-recycling and refining company that turns recovered battery materials into lithium carbonate for battery manufacturers.

A battery-recycling and refining company that turns recovered battery materials into lithium carbonate for battery manufacturers.

$15MSeries AClimate techUnited StatesInvestors
Biochar Industrial GroupClimate tech · United StatesCompany profile

Biochar Industrial Group partners with agricultural processors to install and operate pyrolysis equipment that converts their residues into biochar and verified carbon-credit revenue.

Biochar Industrial Group partners with agricultural processors to install and operate pyrolysis equipment that converts their residues into biochar and verified carbon-credit revenue.

$1.5MPre-seedClimate techUnited StatesInvestors
Mazama EnergyClimate tech · United StatesCompany profile

A geothermal developer building enhanced geothermal systems that create engineered reservoirs in very hot rock to deliver round-the-clock electricity.

A geothermal developer building enhanced geothermal systems that create engineered reservoirs in very hot rock to deliver round-the-clock electricity.

$135MSeries BClimate techUnited StatesInvestors
BekiaClimate tech · EgyptCompany profile

Bekia connects households and informal collectors with businesses that need traceable recyclable materials, using digital collection records and software for recycling operations.

Bekia connects households and informal collectors with businesses that need traceable recyclable materials, using digital collection records and software for recycling operations.

$765KSeedClimate techEgyptInvestors
Cura ClimateClimate tech · CanadaCompany profile

Cura Climate develops electrochemical technology that reduces emissions from cement production.

Cura Climate develops electrochemical technology that reduces emissions from cement production.

$10MFunding roundUndisclosedClimate techCanadaInvestors
CorePower MagneticsHardware · United StatesCompany profile

CorePower manufactures high-performance inductors, transformers and motors from proprietary magnetic materials for power-electronics applications.

CorePower manufactures high-performance inductors, transformers and motors from proprietary magnetic materials for power-electronics applications.

$10.6MFinancingUndisclosedClimate tech, HardwareUnited StatesInvestors
RavelClimate tech · United StatesCompany profile

A textile-recycling process that separates materials from blended fabrics so recovered fibers can be made into new textiles.

A textile-recycling process that separates materials from blended fabrics so recovered fibers can be made into new textiles.

$8.2MSeedClimate techUnited StatesInvestors

Active investors in this selection

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Ranked by rounds participated in · From Sep 13, 2026

  1. 1
    Lowercarbon Capital

    Type One Energy, Rainmaker, Rune

    3rounds
    0led
  2. 2
    Khosla Ventures

    Hertha Metals, Mazama Energy, Planted

    3rounds
    1led
  3. 3
    Union Square Ventures

    Mana Battery, Rune

    2rounds
    0led
  4. 4
    Breakthrough Energy Ventures

    Type One Energy, Planted

    2rounds
    1led
  5. 5
    SiteGround Capital

    Type One Energy, Mazama Energy

    2rounds
    0led

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