Best Climate Tech (2026)
The $130 trillion energy transition is creating the largest startup opportunity of the century. Explore the companies building fusion reactors, carbon capture, grid-scale batteries, and sustainable materials.
60
Companies ranked
$299.9B
Combined funding
August 2026
Last updated
Updated hourly
Top 60 Climate Tech, ranked
Ranked by disclosed funding, growth signals and traction. Updated August 2026.
Blackstone Energy Transition Partners87Energy TransitionNew York, USA$5.6B
SolarEdge86EnergyHerzliya, Israel$71.8M
Enphase Energy85CleantechFremont, United States$6.0M- FOFounders Fund85Venture CapitalSan Francisco, USA$19.9B
Orsted85EnergyFredericia, Denmark$9.4B
Venture Global LNG85EnergyArlington, United States$11.3B
Arevon Energy85Energy & Climate TechWestlake Village, United States
D.A.A. Tech85Environmental ConsultingWindsor, United States- COConvalt Energy85Renewable EnergyUSA$6.2B
Helion83Clean EnergyEverett, USA$3.6B
Tesla81AutomotiveAustin, United States$7.7B
Wiliot79IoTTel Aviv, Israel$344.0M
Octopus Energy76EnergyLondon, United Kingdom$800.0M- EMEmera75UtilitiesHalifax, Canada
- HAHANWHA75ConglomerateSeoul, South Korea
Jacobs75EngineeringDallas, United States
Kiewit75ConstructionOmaha, United States
NextEra Energy75EnergyJuno Beach, United States- VAValero Energy Corporation75EnergySan Antonio, United States
Eaton Corporation75EnergyDublin, Ireland
Galp75EnergyLisbon, Portugal
Kpler75CommoditiesBrussels, Belgium$1.0B
Fluence Energy75EnergyArlington, USA
Comerc Energia75EnergySão Paulo, Brazil$589.0M- AGAggreko75EnergyGlasgow, United Kingdom
Silicon Ranch75Clean EnergyNashville, United States
Radiant74Nuclear EnergyEl Segundo, United States$518.0M
Group14 Technologies73Battery TechnologyWoodinville, United States$463.0M
TAE Technologies73Nuclear FusionFoothill Ranch, United States
Apeel Sciences71AgTechSanta Barbara, United States$625.5M
Esentia Energy Development70EnergyMexico City, Mexico$2.0B
Ameresco70EnergyFramingham, USA$63.0M
Lucy Group70EnergyOxford, United Kingdom$25.0M
Chevron70Oil & GasSan Ramon, United States$1.0B- GUGulfTex Energy70Oil & GasSan Antonio, USA$2.2B
Stegra70GreenTechBoden, Sweden$8.2B
Paack70LogisticsTechMadrid, Spain
RELEX70RetailTechHelsinki, Finland$788.0M
Seetree.ai70AgritechTel Aviv, Israel$65.2M
South Pole70Climate TechZurich, Switzerland$20.0M
Enpal70Climate TechBerlin, Germany$3.2B
NuScale Power70Energy & Climate TechPortland, United States$389.6M- KIKinder Morgan69EnergyHouston, United States$45.0B
Gecko Robotics69RoboticsPittsburgh, United States$125.0M
Sila Nanotechnologies69EnergyAlameda, United States$375.0M- REReliance Industries69Artificial IntelligenceMumbai, India$110.0B
- GAGan Systems69Semiconductors & HardwareOttawa, Canada
First Reserve68Private EquityGreenwich, USA$21.3B
StoreDot68BatteryHerzliya, Israel$389.0M
Percepto67DronesTel Aviv, Israel$136.8M
Form Energy67BatteriesSomerville, United States$1.4B
Valar Atomics67Climate TechEl Segundo, United States$1.6B
Crusoe Energy67Energy & Climate TechDenver, United States$610.0M- APAPR Energy66EnergyJacksonville, United States$920.0M
- LILime66TransportationSan Francisco, USA$2.0B
Generate Capital66Sustainable InfrastructureSan Francisco, United States$4.5B- BYBYD Co., Ltd.66AutomotiveShenzhen, China$230.0M
Addionics65BatteryTel Aviv, Israel$73.0M
LifeStraw65WaterBaltimore, United States$63.0M- FLFluor64EngineeringIrving, United States$25.0B
| Company | Sector | HQ | Funding | Score | Website |
|---|---|---|---|---|---|
| Blackstone Energy Transition Partners | Energy Transition | New York, USA | $5.6B | 87 | |
| SolarEdge | Energy | Herzliya, Israel | $71.8M | 86 | |
| Enphase Energy | Cleantech | Fremont, United States | $6.0M | 85 | |
| FOFounders Fund | Venture Capital | San Francisco, USA | $19.9B | 85 | |
| Orsted | Energy | Fredericia, Denmark | $9.4B | 85 | |
| Venture Global LNG | Energy | Arlington, United States | $11.3B | 85 | |
| Arevon Energy | Energy & Climate Tech | Westlake Village, United States | — | 85 | |
| D.A.A. Tech | Environmental Consulting | Windsor, United States | — | 85 | |
| COConvalt Energy | Renewable Energy | USA | $6.2B | 85 | |
| Helion | Clean Energy | Everett, USA | $3.6B | 83 | |
| Tesla | Automotive | Austin, United States | $7.7B | 81 | |
| Wiliot | IoT | Tel Aviv, Israel | $344.0M | 79 | |
| Octopus Energy | Energy | London, United Kingdom | $800.0M | 76 | |
| EMEmera | Utilities | Halifax, Canada | — | 75 | |
| HAHANWHA | Conglomerate | Seoul, South Korea | — | 75 | |
| Jacobs | Engineering | Dallas, United States | — | 75 | |
| Kiewit | Construction | Omaha, United States | — | 75 | |
| NextEra Energy | Energy | Juno Beach, United States | — | 75 | |
| VAValero Energy Corporation | Energy | San Antonio, United States | — | 75 | |
| Eaton Corporation | Energy | Dublin, Ireland | — | 75 | |
| Galp | Energy | Lisbon, Portugal | — | 75 | |
| Kpler | Commodities | Brussels, Belgium | $1.0B | 75 | |
| Fluence Energy | Energy | Arlington, USA | — | 75 | |
| Comerc Energia | Energy | São Paulo, Brazil | $589.0M | 75 | |
| AGAggreko | Energy | Glasgow, United Kingdom | — | 75 | |
| Silicon Ranch | Clean Energy | Nashville, United States | — | 75 | |
| Radiant | Nuclear Energy | El Segundo, United States | $518.0M | 74 | |
| Group14 Technologies | Battery Technology | Woodinville, United States | $463.0M | 73 | |
| TAE Technologies | Nuclear Fusion | Foothill Ranch, United States | — | 73 | |
| Apeel Sciences | AgTech | Santa Barbara, United States | $625.5M | 71 | |
| Esentia Energy Development | Energy | Mexico City, Mexico | $2.0B | 70 | |
| Ameresco | Energy | Framingham, USA | $63.0M | 70 | |
| Lucy Group | Energy | Oxford, United Kingdom | $25.0M | 70 | |
| Chevron | Oil & Gas | San Ramon, United States | $1.0B | 70 | |
| GUGulfTex Energy | Oil & Gas | San Antonio, USA | $2.2B | 70 | |
| Stegra | GreenTech | Boden, Sweden | $8.2B | 70 | |
| Paack | LogisticsTech | Madrid, Spain | — | 70 | |
| RELEX | RetailTech | Helsinki, Finland | $788.0M | 70 | |
| Seetree.ai | Agritech | Tel Aviv, Israel | $65.2M | 70 | |
| South Pole | Climate Tech | Zurich, Switzerland | $20.0M | 70 | |
| Enpal | Climate Tech | Berlin, Germany | $3.2B | 70 | |
| NuScale Power | Energy & Climate Tech | Portland, United States | $389.6M | 70 | |
| KIKinder Morgan | Energy | Houston, United States | $45.0B | 69 | |
| Gecko Robotics | Robotics | Pittsburgh, United States | $125.0M | 69 | |
| Sila Nanotechnologies | Energy | Alameda, United States | $375.0M | 69 | |
| REReliance Industries | Artificial Intelligence | Mumbai, India | $110.0B | 69 | |
| GAGan Systems | Semiconductors & Hardware | Ottawa, Canada | — | 69 | |
| First Reserve | Private Equity | Greenwich, USA | $21.3B | 68 | |
| StoreDot | Battery | Herzliya, Israel | $389.0M | 68 | |
| Percepto | Drones | Tel Aviv, Israel | $136.8M | 67 | |
| Form Energy | Batteries | Somerville, United States | $1.4B | 67 | |
| Valar Atomics | Climate Tech | El Segundo, United States | $1.6B | 67 | |
| Crusoe Energy | Energy & Climate Tech | Denver, United States | $610.0M | 67 | |
| APAPR Energy | Energy | Jacksonville, United States | $920.0M | 66 | |
| LILime | Transportation | San Francisco, USA | $2.0B | 66 | |
| Generate Capital | Sustainable Infrastructure | San Francisco, United States | $4.5B | 66 | |
| BYBYD Co., Ltd. | Automotive | Shenzhen, China | $230.0M | 66 | |
| Addionics | Battery | Tel Aviv, Israel | $73.0M | 65 | |
| LifeStraw | Water | Baltimore, United States | $63.0M | 65 | |
| FLFluor | Engineering | Irving, United States | $25.0B | 64 |
About Climate Tech
Climate tech is no longer a niche, it's the largest investment theme of the 2020s. Breakthrough Energy Ventures, DCVC, Lowercarbon Capital, and S2G Ventures have deployed $30B+ into startups addressing the energy transition. The IRA (Inflation Reduction Act) alone unlocked $370B in incentives, and the EU Green Deal adds another €1T over the decade.
The winning sectors within climate tech are highly differentiated. Battery storage (Form Energy, EnerVenue) is solving the grid's intermittency problem. Nuclear fusion (Commonwealth Fusion, Helion) promises unlimited clean energy. Carbon capture (Climeworks, Heirloom) is scaling from lab to megatons. Green hydrogen (Plug Power, Electric Hydrogen) is decarbonizing heavy industry. Each sub-sector has its own economics, regulatory framework, and competitive dynamics.
What separates climate tech winners from losers is capital efficiency. Solar panels commoditized; the value is in software, grid orchestration, and project finance. Deep-tech bets (fusion, advanced geothermal) require patient capital. The most fundable startups combine hardware innovation with recurring software revenue, monitoring systems, energy trading platforms, and carbon credit marketplaces that generate margin while the hardware depreciates.
Frequently asked questions
What are the best Climate Tech in 2026?
Leading Climate Tech tracked by StartupHub.ai include Blackstone Energy Transition Partners, SolarEdge, Enphase Energy. We rank 60 companies in this category by disclosed funding, growth signals and market traction, refreshed hourly.
What does this Climate Tech ranking include?
This page ranks the top 60 Climate Tech by funding and traction, representing $299.9B in combined disclosed funding. Each entry links to full funding history, team and product details.
Which of these companies has raised the most funding?
Reliance Industries leads the category with $110.0B in disclosed funding.
How is this Climate Tech ranking compiled?
Each company is scored on disclosed funding, team size, growth momentum and profile completeness, then ordered highest first. The list regenerates hourly as new funding rounds, hiring and product launches are detected, so the ranking stays current.