Top 50 Green Energy startups in France
1
Funding: €33M
Stellaria is looking to develop an energy system based on the molten chloride fast reactor (MCFR) technology. It's a liquid-core 250 MWe reactor capable of renewing 100% of its fuel during operation, incinerating long-lived high-level waste and achieving revolutionary levels of intrinsic safety. Its low-pressure operation ensures maximum safety. Installing the reactor several metres underground provides failproof protection against earthquakes and overhead winds. Reactor power self-adapts to demand: under the effect of heat, the liquid fuel expands, slowing down the reaction. The reactor produces both electricity and heat. The startup says they developed one of the most efficient turbines on the market that reaches 45% efficiency.
Stellaria is looking to develop an energy system based on the molten chloride fast reactor (MCFR) technology. It's a liquid-core 250 MWe reactor capable of renewing 100% of its fuel during operation, incinerating long-lived high-level waste and achieving revolutionary levels of intrinsic safety. Its low-pressure operation ensures maximum safety. Installing the reactor several metres underground provides failproof protection against earthquakes and overhead winds. Reactor power self-adapts to demand: under the effect of heat, the liquid fuel expands, slowing down the reaction. The reactor produces both electricity and heat. The startup says they developed one of the most efficient turbines on the market that reaches 45% efficiency.
2
Funding: €12M
Blue Capsule develops sodium-cooled high-temperature reactor that operates at over 800 °C but its core melt is designed to be virtually impossible. This is achieved through the use of TRISO fuel operating in a naturally circulating sodium pool at atmospheric pressure. The system is cooled by ambient air, requiring no water. The Blue Capsule design delivers sufficient power for an industrial site in a compact underground installation. By producing electricity, process heat, and steam simultaneously, a single Blue Capsule unit can meet the needs of an isolated energy community, providing a reliable “energy oasis” even in the driest locations. The startup targets an industrial heat cost of around 50 €/MWh - cheaper than fossil heat price.
Blue Capsule develops sodium-cooled high-temperature reactor that operates at over 800 °C but its core melt is designed to be virtually impossible. This is achieved through the use of TRISO fuel operating in a naturally circulating sodium pool at atmospheric pressure. The system is cooled by ambient air, requiring no water. The Blue Capsule design delivers sufficient power for an industrial site in a compact underground installation. By producing electricity, process heat, and steam simultaneously, a single Blue Capsule unit can meet the needs of an isolated energy community, providing a reliable “energy oasis” even in the driest locations. The startup targets an industrial heat cost of around 50 €/MWh - cheaper than fossil heat price.
3
Funding: €3.8B
Verkor manufactures low-carbon batteries, targeting the electric mobility markets.
Verkor manufactures low-carbon batteries, targeting the electric mobility markets.
4
Funding: $1.6B
Voltalia is a renewables energy developer in France. Its teams work on all steps of project development, from assessing potential and securing the best spots to launching construction after obtaining all required permits and authorizations. As the owner of renewable power assets, Voltalia generates solar electricity and sells it to a diverse range of clients.
Voltalia is a renewables energy developer in France. Its teams work on all steps of project development, from assessing potential and securing the best spots to launching construction after obtaining all required permits and authorizations. As the owner of renewable power assets, Voltalia generates solar electricity and sells it to a diverse range of clients.
5
Funding: €200M
HysetCo is a pioneering hydrogen mobility start-up that helps its clients shift to zero-emission transportation.
HysetCo is a pioneering hydrogen mobility start-up that helps its clients shift to zero-emission transportation.
6
Calogena designs and develops water-based 30MW small modular reactor systems for district heating networks. The low-pressure, low-temperature operation, the direct use of heat and the very limited number of auxiliary systems make the concept intrinsically simpler and safer than any reactor currently in operation or planned. Calogena is a subsidiary of Gorgé industrial Group.
7
Funding: €52.5M
METRON's unique AI, supported by Machine Learning and ontologies, is fully context-aware and provides unrivaled insight into energy usage. METRON-EVA, the "Energy Virtual Assistant", collaborates with experts on energy intelligence strategies.
METRON's unique AI, supported by Machine Learning and ontologies, is fully context-aware and provides unrivaled insight into energy usage. METRON-EVA, the "Energy Virtual Assistant", collaborates with experts on energy intelligence strategies.
8
Funding: €48M
Qarnot designs and develops Q.rad, a computing heater embedding microprocessors as a heat source and connected to the Internet.
Qarnot designs and develops Q.rad, a computing heater embedding microprocessors as a heat source and connected to the Internet.
9
Funding: €47.5M
ekWateur provides an innovative and truly seamless customer experience in a collaborative environment, while offering a 100% green energy at a competitive price. The company also has an ambitious and clear vision for energy services development to complement its energy retail business.
ekWateur provides an innovative and truly seamless customer experience in a collaborative environment, while offering a 100% green energy at a competitive price. The company also has an ambitious and clear vision for energy services development to complement its energy retail business.
10
Funding: €47M
Renaissance Fusion is a high-temperature superconductor and stellarator company. Unlike most nuclear fusion experiments that are based on tokamaks, Renaissance Fusion is working on a stellarator reactor.
Renaissance Fusion is a high-temperature superconductor and stellarator company. Unlike most nuclear fusion experiments that are based on tokamaks, Renaissance Fusion is working on a stellarator reactor.
11
Funding: €42.8M
NAWATechnologies has developed an innovative, economically competitive Ultra-Fast Carbon battery, applied nanotechnology.
NAWATechnologies has developed an innovative, economically competitive Ultra-Fast Carbon battery, applied nanotechnology.
12
Funding: €37.1M
A welded team, always ready to help others, listen, release challenges to build the success story.
A welded team, always ready to help others, listen, release challenges to build the success story.
13
Funding: $31.9M
Upciti provider of precise, localized and real-time data for smart cities and smart retailers.
Upciti provider of precise, localized and real-time data for smart cities and smart retailers.
14
Funding: €25M
Hexana is developing an energy platform combining modular sodium-cooled fast reactors and a thermal storage system. It is a subsidiary of the CEA (French Alternative Energies and Nuclear Energy Commission). The startup targets industrial consumers of high-temperature heat and decarbonized electricity on a large scale. Its power plant has the ability to store heat at high temperatures before its eventual conversion into electricity. This capability enables more flexible energy production and adaptability to fluctuating demand without relying on fossil fuels or reactor load adjustments.
Hexana is developing an energy platform combining modular sodium-cooled fast reactors and a thermal storage system. It is a subsidiary of the CEA (French Alternative Energies and Nuclear Energy Commission). The startup targets industrial consumers of high-temperature heat and decarbonized electricity on a large scale. Its power plant has the ability to store heat at high temperatures before its eventual conversion into electricity. This capability enables more flexible energy production and adaptability to fluctuating demand without relying on fossil fuels or reactor load adjustments.
15
Funding: €20M
Effy is a France based energy renovation company. The company workes on energy renovation for public buildings, residential buildings and industrial facilities
Effy is a France based energy renovation company. The company workes on energy renovation for public buildings, residential buildings and industrial facilities
16
Funding: €19.5M
Otrera is making modern fast neutron reactor (FNR) rethinking its core design decisions to make it simple, safe, and cost-competitive. Its concept is based on a compact, modular loop-type architecture, drawing inspiration from proven LWR principles. It features three alternating reactor vessels: two in operation and one in cooling. This configuration allows for in-vessel fuel cooling, eliminating the need for separate storage pools—a major cost-saving innovation. The project is designed to reduce or even eliminate the traditional limitations of sodium technology and allows to simplify the reactor’s overall architecture, shrink the size of components and supporting infrastructure. Otrera’s modular design relies on standardized components, enabling a range of reactors from 30 to 450 MWe while significantly cutting costs and qualification timelines.
Otrera is making modern fast neutron reactor (FNR) rethinking its core design decisions to make it simple, safe, and cost-competitive. Its concept is based on a compact, modular loop-type architecture, drawing inspiration from proven LWR principles. It features three alternating reactor vessels: two in operation and one in cooling. This configuration allows for in-vessel fuel cooling, eliminating the need for separate storage pools—a major cost-saving innovation. The project is designed to reduce or even eliminate the traditional limitations of sodium technology and allows to simplify the reactor’s overall architecture, shrink the size of components and supporting infrastructure. Otrera’s modular design relies on standardized components, enabling a range of reactors from 30 to 450 MWe while significantly cutting costs and qualification timelines.
17
Funding: €18.8M
Qairos Energies turns hemp biomass to hydrogen that will be converted into electricity for fuel cells to power buses and trains.
Qairos Energies turns hemp biomass to hydrogen that will be converted into electricity for fuel cells to power buses and trains.
18
Funding: $20M
Beyond Aero is developing a zero-emission private aircraft powered by hydrogen-electric propulsion.
Beyond Aero is developing a zero-emission private aircraft powered by hydrogen-electric propulsion.
19
Funding: €19M
BeFC produces biofuel cells that replace low-power batteries in Iot electronics and wearables, making them more environmentally sustainable. These cells generate electricity using paper and enzymes - proteins that speed up chemical reactions and extract electrons from organic matter (that is used as fuel). When a drop of water lands on the paper, a reaction occurs: the enzyme "oxidizes" the glucose, generating an electric current. These cells do not use rare metals (or any metals at all). They are flexible, disposable and recyclable. The company also produces two finished products: BeFC TAG - an intelligent logistics tag for multi-factor logistics and BeFC PATCH - a smart medical patch for remote, real-time patient monitoring.
BeFC produces biofuel cells that replace low-power batteries in Iot electronics and wearables, making them more environmentally sustainable. These cells generate electricity using paper and enzymes - proteins that speed up chemical reactions and extract electrons from organic matter (that is used as fuel). When a drop of water lands on the paper, a reaction occurs: the enzyme "oxidizes" the glucose, generating an electric current. These cells do not use rare metals (or any metals at all). They are flexible, disposable and recyclable. The company also produces two finished products: BeFC TAG - an intelligent logistics tag for multi-factor logistics and BeFC PATCH - a smart medical patch for remote, real-time patient monitoring.
20
Funding: €18M
Ensol is en electricity company providing solar systems to homeowners in France.
Ensol is en electricity company providing solar systems to homeowners in France.
21
Funding: €16.2M
Ergosup has developed an innovative process for producing high pressure hydrogen on site for refueling hydrogen fuel vehicles.
Ergosup has developed an innovative process for producing high pressure hydrogen on site for refueling hydrogen fuel vehicles.
22
Funding: €16.5M
ETC specializes in thermal storage, energetic efficiency, industrial wastes recovery high valuation and advanced materials characterization.
ETC specializes in thermal storage, energetic efficiency, industrial wastes recovery high valuation and advanced materials characterization.
23
Funding: €16.2M
HySiLabs offers hydrogen-based liquid fuel, which is stable, non-toxic, non-explosive, generates no emissions, and can be stored, enabling customers to use it for different applications at room temperature.
HySiLabs offers hydrogen-based liquid fuel, which is stable, non-toxic, non-explosive, generates no emissions, and can be stored, enabling customers to use it for different applications at room temperature.
24
Funding: €15M
Jimmy designs and operates nuclear-reactor-based thermal generators to produce and supply industrial clients with decarbonized process heat at a lower cost than fossil fuels, with a secured price over 20 years. It's nuclear reactor with no turbine, no generator and no grid connection is a 131-foot box running helium at 1,382 degrees and TRISO fuel
Jimmy designs and operates nuclear-reactor-based thermal generators to produce and supply industrial clients with decarbonized process heat at a lower cost than fossil fuels, with a secured price over 20 years. It's nuclear reactor with no turbine, no generator and no grid connection is a 131-foot box running helium at 1,382 degrees and TRISO fuel
25
Funding: €14M
WATTALPS’ goal is to offer a range of standard and modular products so as to make their integration into vehicles or charging stations faster, more efficient and more cost effective.
WATTALPS’ goal is to offer a range of standard and modular products so as to make their integration into vehicles or charging stations faster, more efficient and more cost effective.
26
Funding: $15.4M
Koolboks provides a storage technique due to the superior insulation and ice battery technology employed in the design. The sustainable cooling company, which offers accessible cold storage solutions to businesses across Africa
Koolboks provides a storage technique due to the superior insulation and ice battery technology employed in the design. The sustainable cooling company, which offers accessible cold storage solutions to businesses across Africa
28
Funding: $11.3M
Lancey Energy Storage is the smart way to store Energy and Lancey provides a Plug- Play radiator with connected batteries.
Lancey Energy Storage is the smart way to store Energy and Lancey provides a Plug- Play radiator with connected batteries.
29
Funding: €10.5M
Granular is developing internationally recognised standards for hourly certificates and is providing SaaS tools to trade and manage time-stamped energy certificates (or ‘hourly energy certificates’) that enable consumers to verify when and where their energy is coming from carbon-free sources.
Granular is developing internationally recognised standards for hourly certificates and is providing SaaS tools to trade and manage time-stamped energy certificates (or ‘hourly energy certificates’) that enable consumers to verify when and where their energy is coming from carbon-free sources.
30
Funding: €10.5M
Granular Energy is the platform of the future for managing and trading clean energy.
Granular Energy is the platform of the future for managing and trading clean energy.
31
Evergaz, the French and European biogas greentech, and SICAE-OISE, a distributor and electricity supplier present in 185 municipalities.
32
Energy Pool develops the tool which enables companies to monitor and manage various energy assets so they can easily adjust to the continuously changing grid conditions as smart cities take over.
33
Funding: €7.2M
Tiamat designs, develops, and produces innovative solutions for energy storage applications.
Tiamat designs, develops, and produces innovative solutions for energy storage applications.
34
Funding: €6.6M
Sweetch Energy enables the production of clean electricity from salt water – an abundant energy source that we haven’t yet fully harnessed the value of. The tech is based on a new generation of nanoscale membranes specifically designed to harness osmotic energy.
Sweetch Energy enables the production of clean electricity from salt water – an abundant energy source that we haven’t yet fully harnessed the value of. The tech is based on a new generation of nanoscale membranes specifically designed to harness osmotic energy.
35
Funding: ₩7.9B
enwires develops unique silicon nanowired materials for battery electrodes. Its proprietary manufacturing process yields precisely calibrated silicon nanowire at an extremely competitive cost and is fully compatible with large-scale production.
enwires develops unique silicon nanowired materials for battery electrodes. Its proprietary manufacturing process yields precisely calibrated silicon nanowire at an extremely competitive cost and is fully compatible with large-scale production.
36
Funding: €5M
Storio Energy is an AI-powered energy efficiency technology platform that provides renewable energy.
Storio Energy is an AI-powered energy efficiency technology platform that provides renewable energy.
38
Funding: $5.2M
Guided Energy is a platform for fleets to charge and operate their electric vehicles.
Guided Energy is a platform for fleets to charge and operate their electric vehicles.
39
Clem developed a platform for managing eco-mobility stations. It's smart city electric vehicle car sharing operator to offer carpooling via our user interface. Customers can thus share their journeys and associated costs.
40
Evolution Energie provides energy management solutions to large companies & utility intensive industries.
41
Funding: $3.7M
Luceor is pioneering the development of WiMesh technology to connect strategic and mission critical applications. These WiMesh network solutions ideally complement existing fibre and powerline networks to give the flexibility and rapid deployment needed to support diverse distribution environments.
Luceor is pioneering the development of WiMesh technology to connect strategic and mission critical applications. These WiMesh network solutions ideally complement existing fibre and powerline networks to give the flexibility and rapid deployment needed to support diverse distribution environments.
42
Funding: €3M
EPYR creates industrial power systems that convert electricity from renewable energy sources into high-temperature heat. These are comprehensive solutions integrate equipment, intelligent energy management and financing. The Epyr system captures electricity from the grid at its lowest cost and converts it into heat using resistive heaters. Thermal energy is stored in high-efficiency refractory bricks and released as air or steam on demand for industrial processes. Thanks to fast and precise control, the system is easily integrated into production processes. Epyr also offers a "heat-as-a-service" model that requires no upfront capital investment - the company builds, owns and operates the system for an annual fee.
EPYR creates industrial power systems that convert electricity from renewable energy sources into high-temperature heat. These are comprehensive solutions integrate equipment, intelligent energy management and financing. The Epyr system captures electricity from the grid at its lowest cost and converts it into heat using resistive heaters. Thermal energy is stored in high-efficiency refractory bricks and released as air or steam on demand for industrial processes. Thanks to fast and precise control, the system is easily integrated into production processes. Epyr also offers a "heat-as-a-service" model that requires no upfront capital investment - the company builds, owns and operates the system for an annual fee.
43
DotVision is an innovative French company developing products and services in the field of the Internet of Things for smart grid.
44
Funding: €2.7M
hestiia is a manufacturing company that develops smart electric radiators that are eco-friendly.
hestiia is a manufacturing company that develops smart electric radiators that are eco-friendly.
45
Funding: €1.6M
Imeon Energy is a leading manufacturer of solar inverters integrating Artificial Intelligence
Imeon Energy is a leading manufacturer of solar inverters integrating Artificial Intelligence
46
Funding: €921.4K
HACE (Hydro Air Concept Energy) develops offshore floating wave energy converters (WEC) able to generate electricity from waves of only 5 cm high with a carbon footprint below 1 g CO2/kWh. This leads to a price of electricity below 30 USD/MWh. As a fabless concept, a HACE WEC can be fully manufactured in any shipyard to maximise the benefits for local communities. Operation and maintenance can be performed by locals.
HACE (Hydro Air Concept Energy) develops offshore floating wave energy converters (WEC) able to generate electricity from waves of only 5 cm high with a carbon footprint below 1 g CO2/kWh. This leads to a price of electricity below 30 USD/MWh. As a fabless concept, a HACE WEC can be fully manufactured in any shipyard to maximise the benefits for local communities. Operation and maintenance can be performed by locals.
47
Funding: €460K
G Lyte Offers electrolytes solutions improving the stability and efficiency of DSSC.
G Lyte Offers electrolytes solutions improving the stability and efficiency of DSSC.
48
Funding: €50K
New World Wind provides electricity through a modular and hybrid multiple micro turbine + Solar petals architecture with a perfect fit in urban or natural environment
New World Wind provides electricity through a modular and hybrid multiple micro turbine + Solar petals architecture with a perfect fit in urban or natural environment
49
EOLINK develops cost-effective floating wind parks. We rethink wind turbines' architecture thanks to the yawing capability provided by floating foundations. The conventional single tower is therefore replaced by a set of arms.
50
The best career platform for the net-zero economy. We help skilled workers navigate their careers and transition to green-collar jobs (construction, energy, mobility).
