Top list · Bay Area
Energy startups in Bay Area
76 energy startups in Bay Area have raised money in rounds we track. These are the 50 that have raised the most, $8.1B between them.
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Generate CapitalGenerate Capital is an investment and operating platform for sustainable infrastructure.Generate Capital is an investment and operating platform for sustainable infrastructure.
Founded 2014San Francisco, United States$1.3Blast round Sept 2026 - 2
Pacific FusionPacific Fusion was founded in 2023 to deliver commercial fusion energy to power cities, businesses and homes.Pacific Fusion was founded in 2023 to deliver commercial fusion energy to power cities, businesses and homes.
Founded 1997Fremont, United States$900Mlast round Nov 2024 - 3
Primergy SolarPrimergy Solar is a developer, owner and operator focused on both distributed and utility scale solar PV and battery storage projects.Primergy Solar is a developer, owner and operator focused on both distributed and utility scale solar PV and battery storage projects.
Founded 2019Oakland, United States$760Mlast round Mar 2026 - 4
ArmadaArmada is a pioneering company that offers a full-stack edge computing platform designed for remote and bandwidth-constrained industrial environments.Armada is a pioneering company that offers a full-stack edge computing platform designed for remote and bandwidth-constrained industrial environments.
Founded 2022San Francisco, United States$591Mlast round Sept 2026 - 5
Antora EnergyAntora Energy is an American energy technology company founded in 2018, focused on developing modular thermal batteries that provide reliable, zero-emission heaAntora Energy is an American energy technology company founded in 2018, focused on developing modular thermal batteries that provide reliable, zero-emission hea
Founded 2018San Jose, United States$565Mlast round Jul 2025 - 6
Unconventional AIUnconventional AI rethinks computer foundations to optimize energy efficiency for AI.Unconventional AI rethinks computer foundations to optimize energy efficiency for AI.
Founded -San Francisco, United States$475Mlast round Dec 2025 - 7
BridgeLuxBridgelux develops eco-friendly light emitting diodes that reduce energy consumption.Bridgelux develops eco-friendly light emitting diodes that reduce energy consumption.
Founded 2002Fremont, United States$345Mlast round Feb 2012 - 8
Lunar EnergyLunar Energy is a renewable energy company based in Mountain View, California, founded in 2020.Lunar Energy is a renewable energy company based in Mountain View, California, founded in 2020.
Founded 2020Mountain View, United States$334Mlast round Feb 2026 - 9
EnerVenueEnerVenue is an energy storage infrastructure company based in Fremont, California, founded in 2020.EnerVenue is an energy storage infrastructure company based in Fremont, California, founded in 2020.
Founded 2020Fremont, United States$312Mlast round Mar 2026 - 10
Mainspring EnergyMainspring Energy is a power generation company based in Menlo Park, California, founded in 2010.Mainspring Energy is a power generation company based in Menlo Park, California, founded in 2010.
Founded 2010Menlo Park, United States$258Mlast round Apr 2025 - 11
ApolloApollo helps engineering teams build unified graphs to accelerate application development and deliver better, more cohesive experiences.Apollo helps engineering teams build unified graphs to accelerate application development and deliver better, more cohesive experiences.
Founded 2016San Francisco, United States$242Mlast round Apr 2025 - 12
Siluria TechnologiesSiluria Technologies is a material innovation company developing processes for transforming natural gas into chemicals and fuels.Siluria Technologies is a material innovation company developing processes for transforming natural gas into chemicals and fuels.
Founded 2008San Francisco, United States$209Mlast round Jul 2016 - 13
BoosterBooster Fuels, Inc., founded in 2014 in San Mateo, California, is a mobile energy delivery company focused on transforming the fueling experience.Booster Fuels, Inc., founded in 2014 in San Mateo, California, is a mobile energy delivery company focused on transforming the fueling experience.
Founded 2014Foster City, United States$201Mlast round May 2022 - 14
Velaura AIVelaura AI is a Silicon Valley-based company specializing in AI compute infrastructure.Velaura AI is a Silicon Valley-based company specializing in AI compute infrastructure.
Founded -Santa Clara, United States$110Mlast round Aug 2026 - 15
CalystaCalysta is a biotechnology company based in California, specializing in cellular agriculture.Calysta is a biotechnology company based in California, specializing in cellular agriculture.
Founded 2011San Mateo, United States$109Mlast round Mar 2021 - 16
R-ZeroR-Zero is a San Francisco-based smart building technology company founded in 2020.R-Zero is a San Francisco-based smart building technology company founded in 2020.
Founded 2020San Francisco, United States$105Mlast round Feb 2023 - 17
Mitra ChemMitra Chem is an AI-native manufacturer of lithium-ion battery materials, founded in 2021 and headquartered in Mountain View, California.Mitra Chem is an AI-native manufacturer of lithium-ion battery materials, founded in 2021 and headquartered in Mountain View, California.
Founded 2021Mountain View, United States$91Mlast round Jun 2025 - 18
Deep FissionDeep Fission is transforming the energy landscape by installing modular nuclear power reactors a mile deep.Deep Fission is transforming the energy landscape by installing modular nuclear power reactors a mile deep.
Founded -Berkeley, United States$80Mlast round Feb 2026 - 19
LightLight is a depth-sensing and perception technology company that provides automation solutions for automobiles.Light is a depth-sensing and perception technology company that provides automation solutions for automobiles.
Founded 2013Redwood City, United States$80Mlast round Sept 2026 - 20
GridCAREGridCARE is an energy technology company based in Redwood City, California, founded in 2024.GridCARE is an energy technology company based in Redwood City, California, founded in 2024.
Founded 2024Redwood City, United States$78Mlast round May 2026 - 21
OhmConnectOhmConnect provides a software based powerplant which assists users in reducing their use of electricity.OhmConnect provides a software based powerplant which assists users in reducing their use of electricity.
Founded 2013Oakland, United States$64Mlast round Jun 2022 - 22
Idemitsu RenewablesIdemitsu Renewables is a renewable energy business of Idemitsu Kosan.Idemitsu Renewables is a renewable energy business of Idemitsu Kosan.
Founded 2010San Francisco, United States$61Mlast round Jul 2022 - 23
NEOS GeoSolutionsNEOS GeoSolutions, Inc.NEOS GeoSolutions, Inc.
Founded 2011Pleasanton, United States$60Mlast round Jan 2011 - 24
Natron EnergyNatron Energy is an energy storage company that develops sodium ion battery solutions leveraging Prussian Blue electrode materials.Natron Energy is an energy storage company that develops sodium ion battery solutions leveraging Prussian Blue electrode materials.
Founded 2012Santa Clara, United States$55Mlast round Apr 2025 - 25
VarentecVarentec is a provider of power electronics-based Smart Grid control solutions for municipal, cooperatives and investor-owned utilities.Varentec is a provider of power electronics-based Smart Grid control solutions for municipal, cooperatives and investor-owned utilities.
Founded 2009Santa Clara, United States$55Mlast round Nov 2019 - 26
Alphabet EnergyAlphabet Energy was a startup based in Hayward, California, founded in 2009 by Matthew L.Alphabet Energy was a startup based in Hayward, California, founded in 2009 by Matthew L.
Founded 2009Hayward, United States$55Mlast round Jul 2016 - 27
AetherfluxAetherflux develops a novel design for space.Aetherflux develops a novel design for space.
Founded -San Carlos, United States$50Mlast round Apr 2025 - 28
Aurelius SystemsAurelius Systems builds AI-powered directed energy laser defense platforms protecting troops, bases, and infrastructure from UAS drone threats.Aurelius Systems builds AI-powered directed energy laser defense platforms protecting troops, bases, and infrastructure from UAS drone threats.
Founded -San Francisco, United States$50Mlast round Aug 2026 - 29
General MatterGeneral Matter is a nuclear energy company that produces enriched uranium fuel for nuclear energy applications.General Matter is a nuclear energy company that produces enriched uranium fuel for nuclear energy applications.
Founded 2024San Francisco, United States$50Mlast round Apr 2025 - 30
Caban SystemsCaban Systems designs a software enabled energy storage solution for telecom infrastructure providers worldwide.Caban Systems designs a software enabled energy storage solution for telecom infrastructure providers worldwide.
Founded 2018Burlingame, United States$50Mlast round Apr 2025 - 31
Voya EnergyOur abundant electric future demands a radical new energy delivery system - untethered from the grid and powered by a superior new class of carbon-free fuel.Our abundant electric future demands a radical new energy delivery system - untethered from the grid and powered by a superior new class of carbon-free fuel.
Founded 2025Hayward, United States$48Mlast round Aug 2026 - 32
LightSail EnergyLightSail Energy develops energy storage systems.LightSail Energy develops energy storage systems.
Founded 2009Berkeley, United States$43Mlast round Feb 2013 - 33
OptivoltMillions of homes just became eligible for solar power.
Millions of homes just became eligible for solar power.
Founded 2017San Francisco, United States$37Mlast round Oct 2026 - 34
Anthro EnergyAnthro Energy is a materials company that offers build batteries to enable radically new electronics.Anthro Energy is a materials company that offers build batteries to enable radically new electronics.
Founded 2020San Jose, United States$30Mlast round Apr 2026 - 35
Electrochemistry FoundryElectrochemistry Foundry is a nonprofit innovation platform for bridge battery manufacturing gap.Electrochemistry Foundry is a nonprofit innovation platform for bridge battery manufacturing gap.
Founded -Hayward, United States$28Mlast round Apr 2026 - 36
Swift SolarSwift Solar is a U.S.-based solar technology company founded in 2017, emerging from collaborations with MIT, Stanford University, and the National Renewable EneSwift Solar is a U.S.-based solar technology company founded in 2017, emerging from collaborations with MIT, Stanford University, and the National Renewable Ene
Founded 2017San Carlos, United States$27Mlast round Jun 2024 - 37
Buzz SolutionsBuzz Solutions specializes in visual intelligence solutions aimed at inspecting, maintaining, and securing energy infrastructure.Buzz Solutions specializes in visual intelligence solutions aimed at inspecting, maintaining, and securing energy infrastructure.
Founded 2017Palo Alto, United States$25Mlast round Aug 2026 - 38
OneD Battery SciencesOneD Battery Sciences is a nanotechnology company based in Palo Alto, California, founded in 2013.OneD Battery Sciences is a nanotechnology company based in Palo Alto, California, founded in 2013.
Founded 2013Palo Alto, United States$25Mlast round Sept 2022 - 39
Oorja Fuel CellsOorja Fuel Cells is a global energy company that designs, manufactures, and commercializes Direct Methanol Fuel Cells (DMFC).Oorja Fuel Cells is a global energy company that designs, manufactures, and commercializes Direct Methanol Fuel Cells (DMFC).
Founded 2004Fremont, United States$21Mlast round Feb 2014 - 40
EvolOHEVOLOH is a cleantech company based in Santa Clara, California, founded in April 2020.EVOLOH is a cleantech company based in Santa Clara, California, founded in April 2020.
Founded 2020Santa Clara, United States$20Mlast round Mar 2024 - 41
Natel EnergyNatel Energy is a supplier of sustainable hydropower solutions that produce reliable renewable energy.Natel Energy is a supplier of sustainable hydropower solutions that produce reliable renewable energy.
Founded 2005Alameda, United States$15Mlast round Jul 2025 - 42
Circularity FuelsCircularity Fuels converts biogas into sustainable aviation fuel.Circularity Fuels converts biogas into sustainable aviation fuel.
Founded -Palo Alto, United States$15Mlast round Nov 2026 - 43
Enpower GreentechEnpower Greentech specializes in the development of Next-Generation batteries, including Lithium Metal Batteries.Enpower Greentech specializes in the development of Next-Generation batteries, including Lithium Metal Batteries.
Founded 2012San Jose, United States$14Mlast round Dec 2025 - 44
Gridtential EnergyGridtential Energy provides AGM battery technology services.Gridtential Energy provides AGM battery technology services.
Founded 2010Santa Clara, United States$13Mlast round Apr 2021 - 45
SplightSplight is an AI-driven grid technology company founded in 2021, headquartered in San Mateo, California, with additional offices in Austin, Santiago, and Spain.Splight is an AI-driven grid technology company founded in 2021, headquartered in San Mateo, California, with additional offices in Austin, Santiago, and Spain.
Founded 2021San Francisco, United States$12Mlast round Aug 2025 - 46
Proof EnergyWe are revolutionizing power generation using readily available renewable fuels.We are revolutionizing power generation using readily available renewable fuels.
Founded 2019Fremont, United States$12Mlast round Jul 2022 - 47
Tandem PVTandem PV provides a unique opportunity for solar to reach new heights.Tandem PV provides a unique opportunity for solar to reach new heights.
Founded 2016Fremont, United States$12Mlast round Aug 2026 - 48
Inlyte EnergyInlyte Energy is a company that creates grid storage batteries.Inlyte Energy is a company that creates grid storage batteries.
Founded 2021Berkeley, United States$8.0Mlast round Sept 2025 - 49
PowerlinePowerline is a climate-tech company based in Palo Alto, California, focused on transforming the global electricity grid.Powerline is a climate-tech company based in Palo Alto, California, focused on transforming the global electricity grid.
Founded 2021San Jose, United States$7.0Mlast round Feb 2026 - 50
AmphiformAmphiform is a clean energy company that develops materials for scalable and portable power systems using atom-by-atom engineering.Amphiform is a clean energy company that develops materials for scalable and portable power systems using atom-by-atom engineering.
Founded -San Francisco, United States$5.5Mlast round May 2026
San Francisco, United StatesCompanies whose funding rounds we classed as this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.
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SEEnergy startups worldwide1,800 companies · $129BCECSEEnergy startups in the United States741 companies · $110BN
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WEnergy startups that raised in 2026429 companies · $73B in 2026S
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CEnergy startups in the United Kingdom206 companies · $15BCMEWEnergy startups in the United States that raised in 2026194 companies · $63B in 2026
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