Demeter Partners

Founded in 2005, Demeter Partners is a Paris-based private equity firm specializing in investments that drive the ecological transition. It focuses on seed to late-stage companies and infrastructure projects across Europe, with a particular emphasis on France. The firm invests between €0.5 million and €30 million, typically taking minority stakes and seeking board seats.

Thomas Beaugendre

Investment Manager

Thomas Beaugendre

Investment Manager

Olivier Bordelanne Ph.D

Partner

Cyrille Cabaret

Partner

Marie Cartet

Investment Manager

Past deals in Solar Energy

ZE Energy

Series B in 2024
ZE Energy is provides a hybrid solar plant solution featuring energy storage capabilities and photovoltaics. Equipped with a battery that stores the solar energy generated throughout the day, its power plants boast the advantages of solar power in terms of production costs, integration to the environment and power grid, as well as the generation of zero CO2 emissions.

See You Sun

Venture Round in 2024
See You Sun specializes in developing, building, and operating solar photovoltaic power plants tailored for communities, industrial, commercial, and retail sectors. The company offers comprehensive solutions including individual and collective self-consumption, power purchase agreements (PPAs), energy storage systems, electric vehicle charging stations, and rainwater harvesting systems. These solutions enable businesses to generate clean electricity, reduce reliance on traditional energy sources, and lower their energy costs.

Insolight

Venture Round in 2022
Insolight is an energy company founded in 2015 that specializes in the development and manufacturing of advanced solar panels. The company has achieved record efficiency levels of 29 percent for its solar modules, significantly lowering residential solar electricity costs. Insolight utilizes innovative optical technology that combines high efficiency with the ease of mounting similar to standard flat panels. The company has also demonstrated its capabilities through third-party validations, achieving 36 percent efficiency on lab prototypes and 29 percent on pre-industrial modules. Insolight's business model focuses on developing intellectual property, controlling wholesale distribution, and outsourcing manufacturing. Additionally, the company is engaged in creating photovoltaic systems aimed at reducing solar electricity costs in the agricultural sector, employing integrated tracking methods to optimize energy production based on the sun's position.

ZE Energy

Series A in 2021
ZE Energy is provides a hybrid solar plant solution featuring energy storage capabilities and photovoltaics. Equipped with a battery that stores the solar energy generated throughout the day, its power plants boast the advantages of solar power in terms of production costs, integration to the environment and power grid, as well as the generation of zero CO2 emissions.

See You Sun

Series A in 2021
See You Sun specializes in developing, building, and operating solar photovoltaic power plants tailored for communities, industrial, commercial, and retail sectors. The company offers comprehensive solutions including individual and collective self-consumption, power purchase agreements (PPAs), energy storage systems, electric vehicle charging stations, and rainwater harvesting systems. These solutions enable businesses to generate clean electricity, reduce reliance on traditional energy sources, and lower their energy costs.

ZE Energy

Seed Round in 2020
ZE Energy is provides a hybrid solar plant solution featuring energy storage capabilities and photovoltaics. Equipped with a battery that stores the solar energy generated throughout the day, its power plants boast the advantages of solar power in terms of production costs, integration to the environment and power grid, as well as the generation of zero CO2 emissions.

MyLight Systems

Series A in 2020
MyLight Systems develops innovative energy management solutions that enable homeowners to produce and consume their own solar electricity, aiming to promote energy independence.

Soparsol

Private Equity Round in 2016
Soparsol Is A Project Company Detaining A Brownfield Portfolio Of 6 Operating Photovoltaic Plants Installed On Roof Tops And Parking Lots, With A Total Commissioned Capacity Of 12.8 MWc.

Sunna Design

Venture Round in 2014
Sunna Design is a France-based lighting solutions company that designs and manufactures LED and solar lighting products, including integrated solar street lights for isolated and urban areas and related projects, as well as solar-powered smart grids and design services. Its products illuminate public spaces with limited or no access to electricity, enabling autonomous, sustainable lighting in remote or underserved areas. Founded in 2011 and headquartered in Blanquefort, France, Sunna Design focuses on renewable energy-powered public lighting to improve safety and reduce pollution and operating costs.

Renewable Power International, S.A.U.

Acquisition in 2011
Renewable Power International, S.A.U. is an independent power producer based in Madrid, Spain, specializing in renewable energy. The company is involved in the entire cycle of renewable energy project development, including identification, financing, construction, commissioning, operation, maintenance, and management. It generates electricity from a diverse portfolio of hydrological, wind, and solar-photovoltaic plants. Renewable Power International, S.A.U. owns and operates 20 small hydro plants in Spain and Portugal, boasting a combined installed capacity of 88.5 MW. Additionally, it provides operational and maintenance services for various power plants and photovoltaic parks owned by third parties. Founded in 1987, the company was previously known as Minicentrales Dos, S.A.U. before rebranding in November 2014. It is a subsidiary of Hydrocontracting GmbH and Minicentrales, S.A.

SEMCO Engineering

Venture Round in 2010
SEMCO Engineering S.A. only manufactures, installs, and maintains equipment for the hot wafer processing industry. The company provides process control, automation, and single wafer clamping solutions, as well as horizontal and vertical furnaces. It offers photovoltaic, semiconductor, and automation products, as well as electrostatic chucks and spare parts. The company sells its products through representatives and distributors in the United States, Taiwan, Singapore, Korea, China, Italy, Germany, and the United Kingdom. SEMCO Engineering S.A. was founded in 1986 and is based in Montpellier, France.

SolFocus

Series C in 2009
SolFocus's mission is to enable solar energy generation at a Levelized Cost of Energy (LCOE) competitive with traditional fossil fuel sources. To achieve this goal, SolFocus has developed leading concentrator photovoltaic (CPV) technology which combines high-efficiency solar cells (approaching 40%) and advanced optics to provide solar energy solutions which are scalable, dependable and capable of delivering on the promise of clean, low-cost, renewable energy.

ENGIE Solar

Series C in 2008
ENGIE Solar specializes in providing residential solar power solutions, offering customers clean energy options tailored to their homes.

JMB Energie

Series A in 2008
JMB ENERGY is a producer of renewable electricity, which positions its activity in 2 key areas of renewable energy: the wind and solar photovoltaics. Ultimately, its development will enable it to expand its reach to areas of biomass, and the hydraulics.

SulfurCell

Private Equity Round in 2008
SulfurCell is a German developer and manufacturer of thin-film, electricity-generating solar modules. Sulfurcell's thin-film modules have demonstrated some of the highest energy conversion efficiencies for thin-film PV. Sulfurcell's product also offers scalability — a crucial component for high-volume supply — bringing the solar industry one step closer to mainstream applications.

ENGIE Solar

Series B in 2008
ENGIE Solar specializes in providing residential solar power solutions, offering customers clean energy options tailored to their homes.

PANOSOL

Series A in 2008
Panosol is a solar panel installation company based in Toulouse, France, established in 2008. It specializes in the installation of photovoltaic panels and solar thermal systems, providing clients with a comprehensive service that includes design, sale, installation, and after-sales support. The company aims to assist customers in transitioning to solar energy, enabling them to save on energy costs or invest in green electricity for resale. Panosol emphasizes its commitment to sustainability and social responsibility, striving to develop its business in an economically, socially, and environmentally conscious manner.

Vergnet

Acquisition in 2006
Vergnet, founded in 1989 and based in Ormes, France, specializes in renewable energy solutions. The company offers hybrid systems combining wind and solar power, along with standalone wind energy and solar applications. Vergnet also develops sustainable infrastructure for profitable energy and water projects, tailoring its solutions to meet specific customer needs.
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