# Top 50 Energy Storage Startups Worldwide by Funding (2026)

> The 50 best-funded energy storage startups worldwide, ranked by total funding raised: $23B combined. With founding year, headquarters and each company's rounds.

Source: https://millionrounds.com/top-lists/energy-storage-startups (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Clenera** Clenera is a privately-held renewable energy company acquires, develops, builds and manages utility-scale solar farms and energy storage.](https://millionrounds.com/company/clenera) Clenera is a privately-held renewable energy company acquires, develops, builds and manages utility-scale solar farms and energy storage. *Founded* 2013 Boise, United States **$2.9B** last round Jun 2026
- 2 [**Akaysha Energy** Akaysha Energy offers full-cycle development for projects including Battery Energy Storage Systems (BESS) and renewable energy.](https://millionrounds.com/company/akaysha-energy) Akaysha Energy offers full-cycle development for projects including Battery Energy Storage Systems (BESS) and renewable energy. *Founded* 2021 Melbourne, Australia **$1.5B** last round Oct 2026
- 3 [**Matrix Renewables** Matrix Renewables is a renewable energy platform for renewable energy projects and storage across Europe, US, and Latin America.](https://millionrounds.com/company/matrix-renewables) Matrix Renewables is a renewable energy platform for renewable energy projects and storage across Europe, US, and Latin America. *Founded* 2020 Madrid, Spain **$1.0B** last round Jun 2026
- 4 [**KORE Power** Kore Power manufactures energy storage, electric vehicles, microgrids, utilities, and e-mobility systems for the clean energy industries.](https://millionrounds.com/company/kore-power) Kore Power manufactures energy storage, electric vehicles, microgrids, utilities, and e-mobility systems for the clean energy industries. *Founded* 2018 Coeur D'alene, United States **$850M** last round Jun 2023
- 5 [**Fidra Energy** Fidra Energy is a battery energy storage firm/business that aims to aid decarbonization for electrical system.](https://millionrounds.com/company/fidra-energy) Fidra Energy is a battery energy storage firm/business that aims to aid decarbonization for electrical system. *Founded* 2024 Edinburgh, United Kingdom **$804M** last round Sept 2025
- 6 [**Avantus** Avantus develops large-scale solar and solar-plus-storage projects to drive the adoption of zero-emission energy.](https://millionrounds.com/company/avantus) Avantus develops large-scale solar and solar-plus-storage projects to drive the adoption of zero-emission energy. *Founded* 2019 El Dorado Hills, United States **$800M** last round Sept 2026
- 7 [**Rezolv Energy** Rezolv Energy is an independent power producer and renewable energy developer based in Prague, Czech Republic.](https://millionrounds.com/company/rezolv-energy) Rezolv Energy is an independent power producer and renewable energy developer based in Prague, Czech Republic. *Founded* 2022 Prague, Romania **$763M** last round Nov 2026
- 8 [**Maxwell Power** Maxwell Power is a renewable energy company that installs solar panels.](https://millionrounds.com/company/maxwell-power) Maxwell Power is a renewable energy company that installs solar panels. *Founded* - San Diego, United States **$750M** last round Jun 2026
- 9 [**Moda Midstream** Moda Midstream provides terminal, storage, and distribution solutions to bulk liquid producers.](https://millionrounds.com/company/moda-midstream) Moda Midstream provides terminal, storage, and distribution solutions to bulk liquid producers. *Founded* 2015 United States **$750M** last round Mar 2015
- 10 [**Eelpower** Eelpower is a battery storage developer that operates energy storage solutions.](https://millionrounds.com/company/eelpower) Eelpower is a battery storage developer that operates energy storage solutions. *Founded* 2017 London, United Kingdom **$682M** last round Aug 2025
- 11 [**Origis Energy** Origis Energy focuses on the development, construction, and operation of solar power plants and energy storage solutions.](https://millionrounds.com/company/origis-energy) Origis Energy focuses on the development, construction, and operation of solar power plants and energy storage solutions. *Founded* 2008 Miami, United States **$651M** last round Jan 2025
- 12 [**GIGA Storage** GIGA Storage develops large-scale sustainable energy storage systems.](https://millionrounds.com/company/giga-storage) GIGA Storage develops large-scale sustainable energy storage systems. *Founded* 2018 Amstelveen, Netherlands **$634M** last round Oct 2026
- 13 [**Elvy** Elvy is a Stockholm-based energytech startup founded in 2023, specializing in AI-optimized, subscription-based home energy systems.](https://millionrounds.com/company/elvy) Elvy is a Stockholm-based energytech startup founded in 2023, specializing in AI-optimized, subscription-based home energy systems. *Founded* 2023 Stockholm, Sweden **$595M** last round Oct 2026
- 14 [**Potentia Energy** Potentia Energy is an energy industry that offers development, construction, and operation of solar, wind, and storage for industries.](https://millionrounds.com/company/potentia-energy) Potentia Energy is an energy industry that offers development, construction, and operation of solar, wind, and storage for industries. *Founded* - Sydney, Australia **$553M** last round Dec 2025
- 15 [**Zenobe Energy** Zenobe Energy manufactures battery storage assets for electric bus operators, utilities, and industrial and commercial businesses.](https://millionrounds.com/company/zenobe-energy) Zenobe Energy manufactures battery storage assets for electric bus operators, utilities, and industrial and commercial businesses. *Founded* 2016 London, United Kingdom **$515M** last round Jun 2026
- 16 [**Pivot Energy** Pivot Energy is a national renewable energy provider that develops, finances, builds, owns, and manages solar and energy storage projects.](https://millionrounds.com/company/pivot-energy) Pivot Energy is a national renewable energy provider that develops, finances, builds, owns, and manages solar and energy storage projects. *Founded* 2009 Denver, United States **$500M** last round Oct 2026
- 17 [**NineDot Energy** NineDot Energy develops battery storage sites and other energy solutions.](https://millionrounds.com/company/ninedot-energy) NineDot Energy develops battery storage sites and other energy solutions. *Founded* 2015 New York, United States **$431M** last round Feb 2026
- 18 [**Infinity Power** Infinity Power is a renewable energy company that offers solar, battery storage, and grid infrastructure solutions.](https://millionrounds.com/company/infinity-power) Infinity Power is a renewable energy company that offers solar, battery storage, and grid infrastructure solutions. *Founded* 2006 Amsterdam, Netherlands **$372M** last round Nov 2025
- 19 [**Renalfa** Renalfa is a clean energy investment group with focus in renewable energy and e-mobility.](https://millionrounds.com/company/renalfa) Renalfa is a clean energy investment group with focus in renewable energy and e-mobility. *Founded* - Sofia, Bulgaria **$370M** last round Jul 2025
- 20 [**Lion Storage** Lion Storage is an expert in creating battery energy storage solutions for utilities.](https://millionrounds.com/company/lion-storage) Lion Storage is an expert in creating battery energy storage solutions for utilities. *Founded* - Den Haag, Netherlands **$365M** last round Feb 2025
- 21 [**Pure EV** Pure EV is a motor vehicle company that develops e-mobility and energy storage systems for the EV industry.](https://millionrounds.com/company/pure-ev) Pure EV is a motor vehicle company that develops e-mobility and energy storage systems for the EV industry. *Founded* - India **$358M** last round Feb 2024
- 22 [**Agilitas Energy** Agilitas Energy is a fully integrated developer, builder, owner, and operator of distributed solar and energy-storage systems.](https://millionrounds.com/company/agilitas-energy) Agilitas Energy is a fully integrated developer, builder, owner, and operator of distributed solar and energy-storage systems. *Founded* 2014 Wakefield, United States **$350M** last round Jun 2022
- 23 [**Goshe Energy Storage** Goshe Energy Storage develops, constructs, and manages utility-scale energy storage facilities to promote a sustainable energy future.](https://millionrounds.com/company/goshe-energy-storage) Goshe Energy Storage develops, constructs, and manages utility-scale energy storage facilities to promote a sustainable energy future. *Founded* - Boulder, United States **$328M** last round May 2026
- 24 [**Gore Street Energy Storage Fund** Gore Street Energy Storage Fund is an entity authorised and regulated by the Financial Conduct Authority that provides investment services.](https://millionrounds.com/company/gore-street-energy-storage-fund) Gore Street Energy Storage Fund is an entity authorised and regulated by the Financial Conduct Authority that provides investment services. *Founded* - London, United Kingdom **$324M** last round Nov 2024
- 25 [**Cero Generation** Cero Generation is a solar energy company that develops solar energy and energy storage solutions.](https://millionrounds.com/company/cero-generation) Cero Generation is a solar energy company that develops solar energy and energy storage solutions. *Founded* 2021 London, United Kingdom **$312M** last round Jul 2025
- 26 [**EnerVenue** EnerVenue is an energy storage infrastructure company based in Fremont, California, founded in 2020.](https://millionrounds.com/company/enervenue) EnerVenue is an energy storage infrastructure company based in Fremont, California, founded in 2020. *Founded* 2020 Fremont, United States **$312M** last round Mar 2026
- 27 [**Nostromo** Nostromo Energy designed a water-based energy storage system that is challenging the current BTM energy storage landscape.](https://millionrounds.com/company/nostromo) Nostromo Energy designed a water-based energy storage system that is challenging the current BTM energy storage landscape. *Founded* 2017 - **$306M** last round Dec 2024
- 28 [**QuantumScape** QuantumScape develops solid-state lithium-metal batteries for electric vehicles and other energy storage applications.](https://millionrounds.com/company/quantumscape) QuantumScape develops solid-state lithium-metal batteries for electric vehicles and other energy storage applications. *Founded* 2010 San Jose, United States **$300M** last round Aug 2023
- 29 [**Strata Clean Energy** Strata Clean Energy is a solar storage developer.](https://millionrounds.com/company/strata-clean-energy) Strata Clean Energy is a solar storage developer. *Founded* 2008 Durham, United States **$300M** last round Nov 2023
- 30 [**Summit Ridge Energy** Summit Ridge Energy offers solar, battery storage project acquisition, project development, construction, land and rooftop leasing services.](https://millionrounds.com/company/summit-ridge-energy) Summit Ridge Energy offers solar, battery storage project acquisition, project development, construction, land and rooftop leasing services. *Founded* - Arlington, United States **$290M** last round Jan 2026
- 31 [**ABO Energy** ABO Energy develops wind and solar energy projects, battery storage, and green hydrogen systems.](https://millionrounds.com/company/abo-energy) ABO Energy develops wind and solar energy projects, battery storage, and green hydrogen systems. *Founded* - Wiesbaden, Germany **$279M** last round Aug 2025
- 32 [**Skeleton Technologies** Skeleton Technologies is a global leader in cleantech and the largest manufacturer of advanced energy storage solutions, focusing on ultracapacitors and high-po](https://millionrounds.com/company/skeleton-technologies) Skeleton Technologies is a global leader in cleantech and the largest manufacturer of advanced energy storage solutions, focusing on ultracapacitors and high-po *Founded* 2009 Tallinn, Estonia **$274M** last round Oct 2026
- 33 [**esVolta** esVolta develops, owns and operates utility-scale energy storage projects.](https://millionrounds.com/company/esvolta) esVolta develops, owns and operates utility-scale energy storage projects. *Founded* 2017 Newport Beach, United States **$250M** last round Jun 2026
- 34 [**BlueWave** BlueWave's vision is to protect our planet by transforming access to renewable energy.](https://millionrounds.com/company/bluewave) BlueWave's vision is to protect our planet by transforming access to renewable energy. *Founded* 2010 Boston, United States **$247M** last round Sept 2025
- 35 [**Constantine Energy Storage** Constantine Energy Storage is an energy storage company that provides energy management and renewable energy services.](https://millionrounds.com/company/constantine-energy-storage) Constantine Energy Storage is an energy storage company that provides energy management and renewable energy services. *Founded* 2021 Godalming, United Kingdom **$234M** last round Mar 2025
- 36 [**Nexus Renewable Power** Nexus develops, finances, and operates solar and energy storage assets.](https://millionrounds.com/company/nexus-renewable-power) Nexus develops, finances, and operates solar and energy storage assets. *Founded* - Plano, United States **$220M** last round Sept 2025
- 37 [**Flexion Energy** Flexion Energy is a modern utility and energy storage infrastructure specialist, which is bridging the gap between development and finance.](https://millionrounds.com/company/flexion-energy) Flexion Energy is a modern utility and energy storage infrastructure specialist, which is bridging the gap between development and finance. *Founded* 2014 London, United Kingdom **$207M** last round Jul 2021
- 38 [**Powin Energy** Powin Energy is a manufacturer and developer of energy storage technology for transportation and portable power applications.](https://millionrounds.com/company/powin-energy) Powin Energy is a manufacturer and developer of energy storage technology for transportation and portable power applications. *Founded* 2010 Tualatin, United States **$200M** last round Oct 2024
- 39 [**Aquion Energy** Aquion Energy is a company that manufactures sodium ion batteries and energy storage systems.](https://millionrounds.com/company/aquion-energy) Aquion Energy is a company that manufactures sodium ion batteries and energy storage systems. *Founded* 2007 United States **$186M** last round Sept 2014
- 40 [**SolarReserve** SolarReserve, a venture-backed renewable energy company, focuses on advanced solar thermal storage technology.](https://millionrounds.com/company/solarreserve) SolarReserve, a venture-backed renewable energy company, focuses on advanced solar thermal storage technology. *Founded* 2007 Santa Monica, United States **$182M** last round Oct 2011
- 41 [**Highview Power** Highview Power is a renewable energy company that develops liquid-air energy storage solutions for grid applications.](https://millionrounds.com/company/highview-power) Highview Power is a renewable energy company that develops liquid-air energy storage solutions for grid applications. *Founded* 2005 London, United Kingdom **$171M** last round Nov 2025
- 42 [**Plus Power** Plus Power specializes in creating battery energy storage systems that enhance the efficiency and reliability of the electrical grid.](https://millionrounds.com/company/plus-power) Plus Power specializes in creating battery energy storage systems that enhance the efficiency and reliability of the electrical grid. *Founded* 2018 Houston, United States **$160M** last round Nov 2025
- 43 [**sonnen** Sonnen is a pioneer for intelligent lithium based energy storage.](https://millionrounds.com/company/sonnen) Sonnen is a pioneer for intelligent lithium based energy storage. *Founded* 2010 Wildpoldsried, Germany **$155M** last round May 2018
- 44 [**Nyobolt** Nyobolt is an energy storage technology company based in Cambridge, UK, founded in 2019.](https://millionrounds.com/company/nyobolt) Nyobolt is an energy storage technology company based in Cambridge, UK, founded in 2019. *Founded* 2019 Impington, United Kingdom **$155M** last round Aug 2026
- 45 [**Pathway Power** Pathway Power is a utility-scale solar and battery storage developer building a renewable energy value chain.](https://millionrounds.com/company/pathway-power) Pathway Power is a utility-scale solar and battery storage developer building a renewable energy value chain. *Founded* 2022 San Diego, United States **$150M** last round Jun 2026
- 46 [**Energy Vault** Energy Vault offers a utility-scale, gravity-based storage solution for renewable energy.](https://millionrounds.com/company/energy-vault) Energy Vault offers a utility-scale, gravity-based storage solution for renewable energy. *Founded* 2018 Lugano, Switzerland **$150M** last round Sept 2026
- 47 [**Primus Power** Primus Power manufactures big batteries for the Smart Grid and scalable energy storage in a Zinc Bromine flow battery.](https://millionrounds.com/company/primus-power) Primus Power manufactures big batteries for the Smart Grid and scalable energy storage in a Zinc Bromine flow battery. *Founded* 2009 Hayward, United States **$139M** last round Mar 2017
- 48 [**Ice Energy** Ice Energy is a clean energy technology company based in Santa Barbara, California, with a distribution center in Costa Mesa.](https://millionrounds.com/company/ice-energy) Ice Energy is a clean energy technology company based in Santa Barbara, California, with a distribution center in Costa Mesa. *Founded* 2003 Costa Mesa, United States **$132M** last round Jun 2018
- 49 [**Hecate Grid** Hecate Grid is an independent power producer (IPP) that develops, owns, and operates standalone storage projects.](https://millionrounds.com/company/hecate-grid) Hecate Grid is an independent power producer (IPP) that develops, owns, and operates standalone storage projects. *Founded* 2018 Chicago, United States **$125M** last round Jun 2024
- 50 [**Gaelectric** Gaelectric is a renewable energy development and operations company focusing on the wind energy and energy storage sectors.](https://millionrounds.com/company/gaelectric) Gaelectric is a renewable energy development and operations company focusing on the wind energy and energy storage sectors. *Founded* 2004 Ireland **$116M** last round Nov 2013

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies whose own description names this theme, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

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## More energy storage lists

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