# Top 37 Grid Energy Storage Startups Worldwide by Funding (2026)

> The 37 best-funded grid energy storage startups worldwide, ranked by total funding raised: $1.6B combined.

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

- 1 [**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
- 2 [**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
- 3 [**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
- 4 [**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
- 5 [**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
- 6 [**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
- 7 [**24M Technologies** 24M Technologies develops energy storage systems for grid and transportation applications.](https://millionrounds.com/company/24m-technologies) 24M Technologies develops energy storage systems for grid and transportation applications. *Founded* 2010 Cambridge, United States **$103M** last round Sept 2024
- 8 [**Baltic Storage Platform** Baltic Storage Platform is a cutting-edge battery park comple designed to enhance energy independence and stabilize the power grid.](https://millionrounds.com/company/baltic-storage-platform) Baltic Storage Platform is a cutting-edge battery park comple designed to enhance energy independence and stabilize the power grid. *Founded* - Valjala, Estonia **$99M** last round Oct 2025
- 9 [**Atlante** Atlante is a developer of an electric vehicle charging network that is 100% grid-integrated and powered by renewables and energy storage.](https://millionrounds.com/company/atlante) Atlante is a developer of an electric vehicle charging network that is 100% grid-integrated and powered by renewables and energy storage. *Founded* 2021 Milano, Italy **$50M** last round Sept 2023
- 10 [**Tavion** Tavion is a developer of battery energy storage systems (BESS) focused on enhancing Europe’s renewable energy transition.](https://millionrounds.com/company/tavion) Tavion is a developer of battery energy storage systems (BESS) focused on enhancing Europe’s renewable energy transition. *Founded* - Stockholm, Sweden **$47M** last round Sept 2026
- 11 [**EnerVault** EnerVault provides energy storage solutions for renewable energy, utility, grid, commercial and industrial applications.](https://millionrounds.com/company/enervault) EnerVault provides energy storage solutions for renewable energy, utility, grid, commercial and industrial applications. *Founded* 2008 Sunnyvale, United States **$26M** last round Feb 2012
- 12 [**Decade Energy** Decade Energy develops energy storage, charging, and software solutions that secures power for electric fleets at the lowest possible cost.](https://millionrounds.com/company/decade-energy) Decade Energy develops energy storage, charging, and software solutions that secures power for electric fleets at the lowest possible cost. *Founded* 2024 Paris, France **$26M** last round Apr 2026
- 13 [**Grid Connected Infrastructure** GCI is a well-funded utility scale energy storage development firm managed by experienced project developers.](https://millionrounds.com/company/grid-connected-infrastructure) GCI is a well-funded utility scale energy storage development firm managed by experienced project developers. *Founded* 2022 Davidson, United States **$23M** last round Jun 2023
- 14 [**Ambri** Ambri is an American startup focused on long-duration grid-scale energy storage using its proprietary Liquid MetalTM battery technology.](https://millionrounds.com/company/ambri) Ambri is an American startup focused on long-duration grid-scale energy storage using its proprietary Liquid MetalTM battery technology. *Founded* 2010 Marlborough, United States **$11M** last round Aug 2024
- 15 [**Eddy Grid** Eddy Grid is a Dutch energy technology startup based in Utrecht, founded in 2023.](https://millionrounds.com/company/eddy-grid) Eddy Grid is a Dutch energy technology startup based in Utrecht, founded in 2023. *Founded* 2023 Utrecht, Netherlands **$11M** last round May 2026
- 16 [**Quidnet Energy** Quidnet Energy is an energy storage company based in Houston, Texas, focused on developing Geomechanical Energy Storage (GES) technology.](https://millionrounds.com/company/quidnet-energy) Quidnet Energy is an energy storage company based in Houston, Texas, focused on developing Geomechanical Energy Storage (GES) technology. *Founded* 2013 Houston, United States **$10M** last round Nov 2022
- 17 [**Earl Energy** Earl Energy designs, builds, installs, and services off-grid power generation energy management and energy storage solutions.](https://millionrounds.com/company/earl-energy) Earl Energy designs, builds, installs, and services off-grid power generation energy management and energy storage solutions. *Founded* 2009 Virginia Beach, United States **$8.7M** last round May 2014
- 18 [**Inlyte Energy** Inlyte Energy is a company that creates grid storage batteries.](https://millionrounds.com/company/inlyte-energy) Inlyte Energy is a company that creates grid storage batteries. *Founded* 2021 Berkeley, United States **$8.0M** last round Sept 2025
- 19 [**Powerline** Powerline is a climate-tech company based in Palo Alto, California, focused on transforming the global electricity grid.](https://millionrounds.com/company/powerline) Powerline is a climate-tech company based in Palo Alto, California, focused on transforming the global electricity grid. *Founded* 2021 San Jose, United States **$7.0M** last round Feb 2026
- 20 [**Qnetic** Qnetic is a renewable energy startup based in New York, founded in 2021.](https://millionrounds.com/company/qnetic) Qnetic is a renewable energy startup based in New York, founded in 2021. *Founded* 2021 New York, United States **$5.1M** last round Jul 2026
- 21 [**Piq Energy** Piq Energy is a San Francisco-based company founded in 2023 that specializes in software for automating grid studies and interconnection analysis.](https://millionrounds.com/company/piq-energy) Piq Energy is a San Francisco-based company founded in 2023 that specializes in software for automating grid studies and interconnection analysis. *Founded* 2023 San Francisco, United States **$5.0M** last round Jul 2026
- 22 [**Rebaba** Building second life battery energy storage systems for a greener grid.](https://millionrounds.com/company/rebaba) Building second life battery energy storage systems for a greener grid. *Founded* 2023 Stockholm, Sweden **$4.6M** last round Sept 2026
- 23 [**VCharge** VCharge builds software to control electric loads with storage that respond intelligently to changing grid and market conditions.](https://millionrounds.com/company/vcharge) VCharge builds software to control electric loads with storage that respond intelligently to changing grid and market conditions. *Founded* 2009 United States **$4.4M** last round Oct 2013
- 24 [**React Network** React Network aims to modernize the national power grid by creating a community owned network connecting energy storage assets.](https://millionrounds.com/company/react-network) React Network aims to modernize the national power grid by creating a community owned network connecting energy storage assets. *Founded* - Austin, United States **$4.2M** last round Nov 2022
- 25 [**Allye** Allye is a London-based energy storage company that specializes in distributed battery storage and energy management solutions.](https://millionrounds.com/company/allye) Allye is a London-based energy storage company that specializes in distributed battery storage and energy management solutions. *Founded* 2023 London, United Kingdom **$2.5M** last round Mar 2026
- 26 [**Alpha Grid** Alpha Grid is a software development company based in Palo Alto, California, founded in 2020.](https://millionrounds.com/company/alpha-grid) Alpha Grid is a software development company based in Palo Alto, California, founded in 2020. *Founded* 2022 Palo Alto, United States **$2.5M** last round Jul 2023
- 27 [**Off Grid Energy** Off Grid Energy is a manufacturer of energy storage solutions.](https://millionrounds.com/company/off-grid-energy) Off Grid Energy is a manufacturer of energy storage solutions. *Founded* 2012 United Kingdom **$1.8M** last round May 2021
- 28 [**Zympler** Zympler is a Dutch B2B energy software startup based in Utrecht, founded in 2023.](https://millionrounds.com/company/zympler) Zympler is a Dutch B2B energy software startup based in Utrecht, founded in 2023. *Founded* 2023 Utrecht, Netherlands **$1.8M** last round Sept 2025
- 29 [**Corre Energy** Corre Energy develops, builds and operates grid-scale underground energy storage.](https://millionrounds.com/company/corre-energy) Corre Energy develops, builds and operates grid-scale underground energy storage. *Founded* 2018 Groningen, Netherlands **$1.5M** last round Aug 2024
- 30 [**1Energy Systems** 1Energy Systems is a provider of software for grid-connected energy storage systems and other electric energy assets.](https://millionrounds.com/company/1energy-systems) 1Energy Systems is a provider of software for grid-connected energy storage systems and other electric energy assets. *Founded* 2010 United States **$1.4M** last round Apr 2013
- 31 [**Rewbi** Rewbi is a Renewable Energy Power Generation and storage firm using AI to optimize grid battery storage.](https://millionrounds.com/company/rewbi) Rewbi is a Renewable Energy Power Generation and storage firm using AI to optimize grid battery storage. *Founded* - San Francisco, United States **$500K** last round Sept 2024
- 32 [**Zinc8 Energy Solutions** Zinc8 offers energy storage solution to utilities, commercial and industrial sectors, micro-grids, and renewable energy developers.](https://millionrounds.com/company/zinc8-energy-solutions) Zinc8 offers energy storage solution to utilities, commercial and industrial sectors, micro-grids, and renewable energy developers. *Founded* - Vancouver, Canada **$500K** last round Jan 2023
- 33 [**Synchrostor** Synchrostor is an engineering R&D business that provides long duration grid-scale energy storage technology services.](https://millionrounds.com/company/synchrostor) Synchrostor is an engineering R&D business that provides long duration grid-scale energy storage technology services. *Founded* 2017 United Kingdom **$333K** last round Oct 2025
- 34 [**Group1** Group1 is an American company specializing in potassium-ion battery technology.](https://millionrounds.com/company/group1) Group1 is an American company specializing in potassium-ion battery technology. *Founded* 2021 Austin, United States **$275K** last round Jan 2024
- 35 [**Energy Surety Partners** Energy Surety Partners (ESP) develops renewable energy projects with integrated energy storage, turnkey smart grid solutions and innovative financial programs t](https://millionrounds.com/company/energy-surety-partners) Energy Surety Partners (ESP) develops renewable energy projects with integrated energy storage, turnkey smart grid solutions and innovative financial programs t *Founded* 2013 Phoenix, United States **$100K** last round Feb 2015
- 36 [**TasmanIon** TasmanIon is developing new aluminium-ion battery technologies suited for grid storage and portable applications.](https://millionrounds.com/company/tasmanion) TasmanIon is developing new aluminium-ion battery technologies suited for grid storage and portable applications. *Founded* - Kelburn, New Zealand **$21K** last round Sept 2023
- 37 [**Revterra** Revterra is a Houston-based sustainable energy company founded in 2017.](https://millionrounds.com/company/revterra) Revterra is a Houston-based sustainable energy company founded in 2017. *Founded* 2017 Houston, United States **$20K** last round Oct 2022

**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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[See all](https://millionrounds.com/top-lists?r=Global)

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