In 2025, European energy tech companies raised €7.5 billion, with funding concentrated in large infrastructure-focused rounds spanning EV charging, battery storage, grid flexibility, home energy systems, and sustainable fuels.
Debt financing played a major role, particularly among companies scaling capital-intensive assets such as charging networks and storage systems. Germany, the UK, the Netherlands, France, and Sweden stood out among the most active markets.
The largest deals show investor focus on deployment-ready infrastructure, with EV charging companies IONITY, Electra, and Believ ranking highly, while battery and grid storage companies, including Green Flexibility, Zenobē, Lion Storage, Return, and Energy Vault, also attracted significant capital.
Overall, 2025 points to a European energy tech market increasingly shaped by scale, infrastructure buildout, and the need to support electrification and renewable energy integration (for more detailed analyses of the European technology ecosystem, check out Tech.eu’s annual report: EuropeanTech 2025 - The Big Picture).
Here are ten energy tech companies that raised the most in 2025
IONITY (Germany)
Amount raised in 2025: €600M
IONITY is a European electric vehicle charging infrastructure company operating a high-power charging network across 24 countries.
Founded in 2017 as a joint venture between major automotive manufacturers, the company provides ultra-fast EV charging services designed to support long-distance electric mobility across Europe.
In 2025, IONITY secured €600 million in financing backed by nine European commercial banks to expand its network to more than 13,000 charging points by 2030.
Elvy (Sweden)
Amount raised in 2025: €500M
Elvy is a Sweden-based energy technology company providing subscription-based home energy systems that combine solar panels, heat pumps, and battery storage with installation, maintenance, and energy management services.
The company uses data analysis and AI-driven optimisation to help households reduce energy costs and increase energy self-sufficiency through fixed-price energy plans.
Elvy raised €500 million to support the expansion of its home energy solutions platform and increase access to integrated residential energy systems.
Electra (France)
Amount raised in 2025: €433M
Electra is a France-based electric vehicle charging company operating a network of ultra-fast charging stations across Europe.
The company develops and manages high-power EV charging infrastructure designed to support long-distance electric mobility through a simplified charging experience, integrated software, and charging capacities of up to 400 kW.
Electra secured a €433 million green loan in 2025 to support the expansion of its ultra-fast EV charging infrastructure across Europe, bringing its total funding to more than €1 billion.
Green Flexibility (Germany)
Amount raised in 2025: €400M
Green Flexibility is an energy technology company developing, building, and operating large-scale battery storage systems designed to support grid stability and renewable energy integration across Europe.
Founded by battery industry veterans, the company manages the full project lifecycle, from site development and permitting to financing, operation, and commercialisation, with a focus on flexible and grid-supportive energy storage solutions.
In 2025, Green Flexibility secured €400 million from Partners Group for large-scale battery storage systems.
Lion Storage (Netherlands)
Amount raised in 2025: €350M
Lion Storage, part of Return and specialising in energy storage, focuses on the development and construction of large-scale battery energy storage systems directly connected to the high-voltage grid.
The company aims to accelerate the energy transition by delivering reliable, efficient, and long-duration storage solutions that support a more sustainable and resilient power system.
In 2025, Lion Storage secured €350 million in financing for ‘Mufasa’, one of Europe’s largest battery storage projects.
Believ (UK)
Amount raised in 2025: £300M
Believ is a UK-based electric vehicle charging infrastructure company developing and operating publicly accessible EV charging networks for local authorities, businesses, and landowners.
The company provides renewable energy-powered charging solutions across on-street, destination, rapid, and ultra-rapid charging locations to support the expansion of electric mobility across the UK.
Believ secured a £300 million investment facility in 2025 to support the installation of at least 30,000 public EV charge points across the UK.
Zenobe Energy (UK)
Amount raised in 2025: €325M
Zenobe is an energy storage and fleet electrification company that develops and operates battery storage systems and electric vehicle infrastructure for public transport, commercial fleets, and power grids.
Founded in 2017, the company focuses on supporting the transition to renewable energy and electric mobility through battery optimisation, grid services, and financing solutions.
In 2025, London-based Zenobē secured €325 million in debt financing from a syndicate of seven international banks to accelerate electric vehicle fleet expansion across Europe.
Energy Vault (Switzerland)
Amount raised in 2025: $378M
Energy Vault is an energy storage technology company that develops and deploys utility-scale solutions designed to support the transition to renewable energy. Its technologies include gravity-based storage systems, battery storage, and hybrid hydrogen solutions, combined with software platforms that help utilities and industrial customers manage and optimise energy assets.
Founded in 2017, the company is known for its gravity energy storage technology, which stores electricity by lifting heavy composite blocks using cranes and releasing the stored energy when the blocks are lowered to generate power for the grid.
In 2025, Energy Vault secured $378 million across three funding rounds to support the continued development and deployment of its energy storage projects.
Return (Netherlands)
Amount raised in 2025: €300M
Return is an energy infrastructure company specialising in large-scale battery energy storage systems and flexibility services.
The company builds, owns, and operates storage assets that help balance electricity supply and demand, integrate renewable energy, and improve grid stability.
Return raised €300 million in growth capital in 2025, to scale battery storage capacity.
SkyNRG (Netherlands)
Amount raised in 2025: €250M
SkyNRG is a sustainable aviation fuel (SAF) company founded in 2009 that focuses on sourcing, supplying, and producing high-integrity SAF to help airlines and corporates reduce the carbon footprint of air travel.
SkyNRG works with global partners to scale SAF production, develop dedicated fuel plants, and make sustainable aviation a viable alternative to fossil jet fuel, supporting the aviation sector’s transition toward lower-emission flying.
SkyNRG secured €250 million in 2025 to build SAF plants in the Netherlands, Sweden, and the US.
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