Top list · London
Energy startups in London
60 energy startups in London have raised money in rounds we track. These are the 50 that have raised the most, $5.8B between them.
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Renewable Power CapitalRenewable Power Capital is a renewable energy investment platform that focuses on energy industries.Renewable Power Capital is a renewable energy investment platform that focuses on energy industries.
Founded 2020London, United Kingdom$915Mlast round Sept 2026 - 2
EelpowerEelpower is a battery storage developer that operates energy storage solutions.Eelpower is a battery storage developer that operates energy storage solutions.
Founded 2017London, United Kingdom$682Mlast round Aug 2025 - 3
Zenobe EnergyZenobe Energy manufactures battery storage assets for electric bus operators, utilities, and industrial and commercial businesses.Zenobe Energy manufactures battery storage assets for electric bus operators, utilities, and industrial and commercial businesses.
Founded 2016London, United Kingdom$515Mlast round Jun 2026 - 4
AgratasAgrata's aim is to build world-class teams and provide best-in-class technologies.Agrata's aim is to build world-class teams and provide best-in-class technologies.
Founded -London, United Kingdom$509Mlast round Apr 2026 - 5
Octopus Renewables Infrastructure TrustOctopus Renewables Infrastructure Trust is a closed end investment company incorporated in England and Wales.Octopus Renewables Infrastructure Trust is a closed end investment company incorporated in England and Wales.
Founded 2019London, United Kingdom$431Mlast round Feb 2025 - 6
Atrato Onsite EnergyAtrato Onsite Energy is a commercial rooftop solar funder.Atrato Onsite Energy is a commercial rooftop solar funder.
Founded -London, United Kingdom$327Mlast round Apr 2025 - 7
Cero GenerationCero Generation is a solar energy company that develops solar energy and energy storage solutions.Cero Generation is a solar energy company that develops solar energy and energy storage solutions.
Founded 2021London, United Kingdom$312Mlast round Jul 2025 - 8
Statera EnergyStatera Energy is a company that generates, transmissions, and distributes electric energy.Statera Energy is a company that generates, transmissions, and distributes electric energy.
Founded 2015London, United Kingdom$307Mlast round Nov 2025 - 9
AMPYR Solar EuropeAMPYR Solar Europe is an Independent electricity generator and solar development.AMPYR Solar Europe is an Independent electricity generator and solar development.
Founded 2020London, United Kingdom$214Mlast round Jun 2023 - 10
Flexion EnergyFlexion Energy is a modern utility and energy storage infrastructure specialist, which is bridging the gap between development and finance.Flexion Energy is a modern utility and energy storage infrastructure specialist, which is bridging the gap between development and finance.
Founded 2014London, United Kingdom$207Mlast round Jul 2021 - 11
Discover ExplorationDiscover Exploration is an upstream oil & gas company with E&P assets in Europe, Africa and Australasia.Discover Exploration is an upstream oil & gas company with E&P assets in Europe, Africa and Australasia.
Founded 2012London, United Kingdom$184Mlast round Feb 2025 - 12
BBOXXBboxx manufactures plug and play solar systems.Bboxx manufactures plug and play solar systems.
Founded 2010London, United Kingdom$167Mlast round Apr 2025 - 13
SunsaveSunsave Group Ltd, also known as Sunsave Energy Limited, is a London-based renewable energy technology company founded in 2022 by Alick Dru and Ben Graves.Sunsave Group Ltd, also known as Sunsave Energy Limited, is a London-based renewable energy technology company founded in 2022 by Alick Dru and Ben Graves.
Founded 2022London, United Kingdom$166Mlast round Jul 2026 - 14
Fuse EnergyFuse is an energy supplier that offers the UK's cheapest electricity tarif.
Fuse is an energy supplier that offers the UK's cheapest electricity tarif.
Founded 2022London, United Kingdom$111Mlast round Jun 2026 - 15
Varco EnergyVarco Energy is a battery storage asset owner and operator.Varco Energy is a battery storage asset owner and operator.
Founded 2021London, United Kingdom$75Mlast round Sept 2023 - 16
TemTem Energy Limited, based in London, is an innovative energy technology company founded in 2021.Tem Energy Limited, based in London, is an innovative energy technology company founded in 2021.
Founded 2021London, United Kingdom$75Mlast round Feb 2026 - 17
Eku EnergyEku Energy is a globally diversified and technology enabled energy storage business.Eku Energy is a globally diversified and technology enabled energy storage business.
Founded 2022London, United Kingdom$60Mlast round May 2025 - 18
IsembardIsembard is a British software-first manufacturing company founded in 2024.Isembard is a British software-first manufacturing company founded in 2024.
Founded 2024London, United Kingdom$59Mlast round Mar 2026 - 19
GaussionGaussion is a London-based technology company that specializes in MagLiBTM, an innovative magnetic lithium-ion battery charging technology.Gaussion is a London-based technology company that specializes in MagLiBTM, an innovative magnetic lithium-ion battery charging technology.
Founded 2017London, United Kingdom$43Mlast round Apr 2026 - 20
Axle EnergyAxle Energy Limited is a B2B energy technology startup based in London, UK, founded in early 2023 by Karl Bach and Archy de Berker.Axle Energy Limited is a B2B energy technology startup based in London, UK, founded in early 2023 by Karl Bach and Archy de Berker.
Founded 2023London, United Kingdom$43Mlast round Jul 2026 - 21
VeremarkVeremark is a global B2B background screening and reference checking platform founded in 2018.Veremark is a global B2B background screening and reference checking platform founded in 2018.
Founded 2018London, United Kingdom$39Mlast round May 2026 - 22
General IndexGeneral Index is a technology-driven commodity pricing provider and benchmark administrator based in London, UK.General Index is a technology-driven commodity pricing provider and benchmark administrator based in London, UK.
Founded 2020London, United Kingdom$35Mlast round Sept 2025 - 23Rotherham EnergyRotherham Energy provides plumbling, heating, and air conditioning installation.
Rotherham Energy provides plumbling, heating, and air conditioning installation.
Founded 2022London, United Kingdom$31Mlast round May 2023 - 24
Energy Drive SystemsEnergy Drive Systems as a Service, Energy EfficiencyEnergy Drive Systems as a Service, Energy Efficiency
Founded -London, United Kingdom$27Mlast round Jun 2025 - 25
LimejumpLimejump is a Technology-Driven Utility: harnessing the power of big data to positively disrupt and transform today’s energy market.Limejump is a Technology-Driven Utility: harnessing the power of big data to positively disrupt and transform today’s energy market.
Founded 2013London, United Kingdom$21Mlast round Oct 2021 - 26
Excellence LoggingExcellence Logging, also known as Exlog, is a prominent independent global specialist in oilfield services, based in London, United Kingdom.Excellence Logging, also known as Exlog, is a prominent independent global specialist in oilfield services, based in London, United Kingdom.
Founded 2015London, United Kingdom$21Mlast round Aug 2024 - 27Bradford EnergyBradford Energy offers an air source heat pump heat network.
Bradford Energy offers an air source heat pump heat network.
Founded 2021London, United Kingdom$20Mlast round May 2023 - 28
GridcogGridcog is a B2B SaaS energy technology company based in London, United Kingdom, founded in 2020.Gridcog is a B2B SaaS energy technology company based in London, United Kingdom, founded in 2020.
Founded 2020London, United Kingdom$18Mlast round Jul 2026 - 29
KonexaKonexa is an energy company that engages in the development and long-term management of integrated utility projects and renewable assets.Konexa is an energy company that engages in the development and long-term management of integrated utility projects and renewable assets.
Founded -London, United Kingdom$18Mlast round Mar 2024 - 30
Quantum Commodity IntelligenceQuantum Commodity Intelligence (QCI) is an independent Price Reporting Agency (PRA) focused on providing market intelligence for the energy transition and carbon markets.Quantum Commodity Intelligence (QCI) is an independent Price Reporting Agency (PRA) focused on providing market intelligence for the energy transition and carbon markets.
Founded 2021London, United Kingdom$17Mlast round Jul 2024 - 31
RFC PowerRFC Power is a global provider of long-duration energy storage solutions, focused on developing a low-cost hydrogen-manganese hybrid flow battery.RFC Power is a global provider of long-duration energy storage solutions, focused on developing a low-cost hydrogen-manganese hybrid flow battery.
Founded 2017London, United Kingdom$15Mlast round Aug 2026 - 32
VolterasVolteras is a London-based data streaming platform that acts as the intelligence layer for connected vehicle data.Volteras is a London-based data streaming platform that acts as the intelligence layer for connected vehicle data.
Founded 2020London, United Kingdom$15Mlast round Apr 2025 - 33
ArboreaArborea is a London-based biotechnology company founded in 2015, focused on industrializing photosynthesis to produce sustainable food ingredients.Arborea is a London-based biotechnology company founded in 2015, focused on industrializing photosynthesis to produce sustainable food ingredients.
Founded 2015London, United Kingdom$11Mlast round Dec 2024 - 34
PerfectTedPerfectTed is the leading matcha brand in the United Kingdom, specializing in high-quality, organic, ceremonial-grade matcha green tea products.PerfectTed is the leading matcha brand in the United Kingdom, specializing in high-quality, organic, ceremonial-grade matcha green tea products.
Founded 2021London, United Kingdom$11Mlast round Sept 2025 - 35
About:EnergyAbout:Energy is a battery intelligence platform that combines world-leading expertise in battery testing and software.About:Energy is a battery intelligence platform that combines world-leading expertise in battery testing and software.
Founded 2021London, United Kingdom$10Mlast round Mar 2026 - 36
Metris EnergyMetris Energy is the first AI-powered solar energy platform for commercial property owners.Metris Energy is the first AI-powered solar energy platform for commercial property owners.
Founded 2023London, United Kingdom$7.5Mlast round Sept 2026 - 37Chrysalix TechnologiesChrysalix Technologies has developing an innovative biomass fractionation process using low-cost ionic liquids.
Chrysalix Technologies has developing an innovative biomass fractionation process using low-cost ionic liquids.
Founded 2017London, United Kingdom$7.4Mlast round Jun 2022 - 38
AirEx TechnologiesAirEx Technologies is a climate tech company based in London, UK, focused on addressing climate change and fuel poverty through innovative smart home solutions.AirEx Technologies is a climate tech company based in London, UK, focused on addressing climate change and fuel poverty through innovative smart home solutions.
Founded 2016London, United Kingdom$7.1Mlast round May 2026 - 39
SOLIVUSSOLIVUS, based in London, is a UK-based renewable energy startup founded in 2016.SOLIVUS, based in London, is a UK-based renewable energy startup founded in 2016.
Founded 2016London, United Kingdom$7.1Mlast round Nov 2025 - 40
powervaultPowervault is a UK-based green energy technology company founded in 2012, focused on designing and manufacturing sustainable energy storage systems for homes anPowervault is a UK-based green energy technology company founded in 2012, focused on designing and manufacturing sustainable energy storage systems for homes an
Founded 2012London, United Kingdom$5.9Mlast round Feb 2023 - 41
Neptune EnergyNeptune Energy is an oil and gas exploration and production company.Neptune Energy is an oil and gas exploration and production company.
Founded 2015London, United Kingdom$4.2Mlast round Jul 2021 - 42
xWattsxWatts, founded in August 2022 and based in Cambridge, United Kingdom, is a ClimateTech and SaaS company focused on intelligent energy management software for txWatts, founded in August 2022 and based in Cambridge, United Kingdom, is a ClimateTech and SaaS company focused on intelligent energy management software for t
Founded 2022London, United Kingdom$4.1Mlast round Feb 2026 - 43
Deltic EnergyDeltic Energy is an AIM-listed natural resources investing company.Deltic Energy is an AIM-listed natural resources investing company.
Founded 2012London, United Kingdom$4.0Mlast round May 2026 - 44
Electric MilesElectric Miles is a UK-based B2B SaaS cleantech company founded in 2017 and headquartered in London.Electric Miles is a UK-based B2B SaaS cleantech company founded in 2017 and headquartered in London.
Founded 2019London, United Kingdom$3.2Mlast round Jan 2025 - 45
Elyos EnergyElyos Energy is a software platform for energy optimization, flexibility, and demand response.Elyos Energy is a software platform for energy optimization, flexibility, and demand response.
Founded 2023London, United Kingdom$3.0Mlast round Oct 2023 - 46
AcouBattAcouBatt uses acoustic sensors and AI to monitor internal battery activity.AcouBatt uses acoustic sensors and AI to monitor internal battery activity.
Founded 2025London, United Kingdom$3.0Mlast round Sept 2026 - 47
AllyeAllye is a London-based energy storage company that specializes in distributed battery storage and energy management solutions.Allye is a London-based energy storage company that specializes in distributed battery storage and energy management solutions.
Founded 2023London, United Kingdom$2.5Mlast round Mar 2026 - 48
Arcola EnergyArcola Energy is a leader in hydrogen and fuel cell integration, specializing in zero-emission solutions for heavy-duty vehicles.Arcola Energy is a leader in hydrogen and fuel cell integration, specializing in zero-emission solutions for heavy-duty vehicles.
Founded 2010London, United Kingdom$2.1Mlast round Mar 2021 - 49
Gyre EnergyGyre Energy is an Oxford-based company that develops AI-powered software solutions for the cooling and refrigeration industry.Gyre Energy is an Oxford-based company that develops AI-powered software solutions for the cooling and refrigeration industry.
Founded 2025London, United Kingdom$2.1Mlast round Jul 2026 - 50
AMTE PowerAMTE Power partners with niche customers to enable them to scale and transfer emerging new cell technologies to manufacture.AMTE Power partners with niche customers to enable them to scale and transfer emerging new cell technologies to manufacture.
Founded -London, United Kingdom$1.3Mlast round Jul 2023
London, United KingdomCompanies 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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SEnergy startups in Europe607 companies · $39BC
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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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TERSEnergy startups founded in 2021111 companies · $8.5B
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EEnergy startups founded in 2020105 companies · $15BMore lists for London
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PDStartups in London3,521 companies · $51BIL
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UAI startups in London479 companies · $18B
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FIT Services startups in London400 companies · $3.0BIL
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SHealth startups in London300 companies · $9.9BF
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RFinancial Services startups in London282 companies · $22BIL
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MHealthcare startups in London191 companies · $6.9BFCR
CFintech startups in London166 companies · $15B
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EBig Data & Analytics startups in London164 companies · $3.3B