Best Energy Companies in Ile de France, France

Provider of advanced nuclear energy technologies, focused on designing, building, and operating small modular lead-cooled fast reactors. The company focuses on small modular reactors that recycle nuclear waste into fuel, closing the fuel cycle for sustainable power. The reactors use liquid lead cooling and fast neutron flux to avoid long-lived radioactive waste like plutonium and reduce the need for geological storage. ​

Funding rounds

• Feb 2026Series B$85M
• Sep 2024Series B$151M
• May 2024Series B$109.4M
• Mar 2023Series B—

Founders & team

Luciano CinottiCo-Founder & CSOElisabeth RizzottiFounder & Chief Operating Officer – Managing Director ItalyMiroslav SarisskyManaging Director

Investors

Exor, LIFTT, Club degli Investitori, Gov, MITO Technology, Progress Tech Transfer

Tech stack

Apache Http ServerAzureAzure Front DoorBootstrapContentfulDocusign

Provider of turnkey financing for industrial decarbonization projects. It finances the entire investment cost through heat supply or energy performance contracts. The company participates in the co-development of decarbonization projects, leveraging technical, contractual, and financial expertise. This allows energy consumers to outsource operational risks and focus on their core business. Financing is offered for projects up to a certain investment amount, with contracts ranging from seven to twenty-five years. Collaboration with energy service companies and project developers ensures a turnkey solution encompassing design, construction, operation, maintenance, and financing.

Enersweet is a group specializing in energy efficiency services for businesses and communities. They recently acquired LICIEL Environnement, a leading provider of software solutions for property. Enersweet is focused on the energy transition and offers services related to energy efficiency.

Funding rounds

• Mar 2026Series C$51.4M

Founders & team

Felix LenglartPartner & Investment Director

Investors

Ring Capital

Spark Cleantech is a company that offers deCarbonized Hydrogen as a substitute for natural gas to decarbonize industries. They develop local production sources of clean hydrogen using a novel method of producing hydrogen called methane plasmalysis. They also provide laboratory and office space to energy-focused startups through their incubator program, Spark Cleantech Accelerator.

Funding rounds

• Dec 2025Conventional Debt$15.2M
• Dec 2025Series A$19.8M

Founders & team

Patrick PetersCo-Founder & CEOErwan PannierChief Technology Officer and Co-Founder

Investors

360 Capital Partners, Taranis, Region ile-de-France, Asterion, Wind Capital

Tech stack

Animate.CssAstraCore-JsElementorFont AwesomeGoogle Font Api

Independent solar power producer

Funding rounds

• Nov 2024Series C$58.9M
• Nov 2021Series B$45.1M
• Jun 2020Series A$4.5M

Founders & team

Mathieu LassagneCEO

Investors

Demeter, HTGF, everWatt, Marguerite, SOREGIES, Amundi

Tech stack

Apache Http ServerContact Form 7Google Font ApiIonosMicrosoft 365Mysql

Producer of sugar, ethanol, and other agricultural products derived from beets, wheat, alfalfa, sugarcane, and corn. The company's operations encompass the entire value chain, from raw material sourcing and processing to the production and marketing of a diverse portfolio of products for the food, energy, animal nutrition, and chemical sectors. These products include various sugars, ethanol, bioethanol, maltodextrin, vegetable proteins, starches, and derivatives, along with fibers for animal feed. The company also engages in activities related to industrial processes, energy production, and green chemistry.

Funding rounds

• Aug 2023Grant (prize money)$3.9M
• Nov 2022Grant (prize money)$894.3K
• Oct 2020Conventional Debt$585.9M
• Oct 2018Grant (prize money)$192K

Founders & team

Olivier LeducqCEO

Investors

Europa, Unigrains, hautsdefrance, Economy And Finance, IDIA Capital Investissement

Tech stack

GsapJqueryJquery MigrateMicrosoft 365Moove Gdpr ConsentMysql

Smart Energies is an active participant in energy transition, focusing on developing, financing, constructing, and operating renewable energy production sites.

Funding rounds

• Jun 2024Series C$93.8M

Founders & team

Vianney l EstangCEO

Investors

Plenium Partners, SWEN Capital Partners, RGREEN INVEST

Tech stack

Apache Http ServerAxeptioCdnjsCloudflareCloudflare Bot ManagementCraft Cms

Infrastructure fund focused on renewable energy investments

Funding rounds

• Apr 2024Series C$64.2M
• Sep 2021Series B—

Founders & team

Tomoaki OkuboDeputy CEOAntoine VeyreCFO & Deputy CEO - NOA - Meridiam

Investors

Mirova, 3i Group, Banque des Territoires, EDF, Meridiam

Tech stack

WordpressMysqlPhpUbuntuYoast SeoApache Http Server

Designs, constructs, operates and maintains renewable energy and energy efficiency projects. It is a group of companies that are working for the development of renewable and energy efficiency sectors. The group of companies offers designing, construction, operation and maintenance services for renewable energy projects across the globe.

Funding rounds

• Apr 2022Grant (prize money)$300.7K
• Sep 2017Post IPO$237.3M
• Jul 2017Grant (prize money)$323.3K
• Jan 2017Grant (prize money)$270.8K

Founders & team

Nathan AllenBusiness OwnerDean PatonManaging DirectorMaria AmbrizSenior Executive Assistant of the Managing Director

Investors

Ardian, FFP, PAI Partners, Europa, Economy And Finance, Starling Group

Tech stack

Apache Http ServerApple Icloud MailAxeptioBackbone.JsBootstrapD3

NW Groupe is a company focused on developing solutions for renewable energy and electric vehicles, including high-power charging stations and distributed electricity storage units. Their innovative technologies aim to contribute to the transition towards sustainable energy practices.

Funding rounds

• Jun 2022Series D$316.6M

Founders & team

Jean-Christophe KerdelhueFounder & CEOEmeric Des RoziersCEO

Investors

RGREEN INVEST

Tech stack

Animate.CssApple Icloud MailAxeptioFont AwesomeGoogle Font ApiHsts

Developer of nuclear energy project

Funding rounds

• Nov 2023Series C$65.8M

Founders & team

Ivan GavriloffCo-Founder

Investors

Gouv.fr

Provider of electricity generation and other energy services. It is a global energy actor and expert in electricity, natural gas, and energy services. The company provides access to sustainable energy, mitigation, and adaptation to climate change, the security of supply and rational use of resources. It also offers tailored energy services to sectors such as cities, industries, tertiary businesses, and individuals to support zero-carbon targets and energy efficiency. In 2022, the company recorded annual revenues of $98.65B and a net profit of $0.23B.

Funding rounds

• Feb 2024Post IPO—
• Nov 2023Grant (prize money)$371.7K
• Dec 2021Grant (prize money)$3.2M
• Sep 2021Grant (prize money)$408K

Founders & team

Henri DomenachManaging DirectorCatherine MacgregorCEOCharles-Edouard DelpierreCEO Tractebel France

Investors

Europa, Goldman Sachs, The Abraaj Group, Gov, RIO Ventures Holdings, Aureleon

Tech stack

AlgoliaAmazon AlbAmazon CloudfrontAmazon SesAmazon Web ServicesApache Http Server