Who we are?

Field of crops under the agricultural canopy TSE, solar energy expert

TSE has threefold ambition: to combat climate change, to support the agricultural transition, and to produce the lowest-cost carbon-free electricity to strengthen our energy independence.

TSE is an independent, 100% French solar energy developer and producer.
Since its founding in 2016, the company has combined photovoltaic innovation, agrivoltaics, a strong local presence, and industrial expertise. Our goal is to produce energy that is self-sufficient, competitive, carbon-free, and local, and that benefits farmers, businesses, and local communities.

Our vision

France must address several challenges at the same time:

  • reduce its carbon emissions,
  • secure its energy supply,
  • protect its agriculture from climate change,
  • enhance the attractiveness of its region,
  • and maintain the competitiveness of its industry.

These issues can no longer be addressed separately. Photovoltaic energy provides a solution to all of these challenges related to strategic autonomy and daily life.

When well-designed, a solar power plant becomes an infrastructure asset for national sovereignty, producing competitive energy, serving as a tool for agricultural adaptation through agrivoltaics, and acting as a catalyst for local development.

A TSE partner farmer under the agricultural canopy

Our model

TSE is involved across the entire value chain: land acquisition, development, engineering, R&D, financing, construction, utility connections, operations, and maintenance.

This integrated approach is essential. It enables us :

  • to collaboratively build projects over the long term,
  • foster relationships based on trust,
  • maintain control over project quality,
  • adapt solutions to local constraints,
  • and ensure that the value created remains tied to the farmers and communities that host the facilities.
Cows grazing next to a TSE agrivoltaic shade adapted to cattle, goat and sheep farms.

The story of TSE

Mathieu Debonnet and Pierre-Yves Lambert, co-founders of TSE

2016

Founding of TSE

2020

Launching of R&D on agrivoltaics
Launch of R&D on agrivoltaics
Commissioning of the Marville power plant, France's 2nd largest PV power plant

2021

Commissioning of the Marville power plant, France's second-largest solar power plant

2022

Inauguration of the world's first agricultural canopy in Amance
Inauguration of the Amance agricultural canopy, a world first
Inauguration of the first irrigated agricultural canopy in Brouchy

2023

Fundraising of 160 million euros in equity

2023

Founding member and shareholder of the Holosolis consortium, a French photovoltaic panel manufacturing plant in Hambach
Fundraising of 160 million euros
Inauguration de la 1ère canopée agricole irriguée à Brouchy

2024

Launch of the green energy hub project on the former Fonderies du Poitou site

2025

Inauguration of France's first shade structure on trackers in a field crop setting, in Chadeleuf
Projet de revitalisation des anciennes fonderies du poitou
Inauguration de la 1ère canopée agricole irriguée à Brouchy

2026

A member of French Tech 120 for the second consecutive year and B Corp™ certified

Our founders

Mathieu Debonnet and Pierre-Yves Lambert, entrepreneurs committed to solar energy and the fight against global warming, together created TSE in 2016, which has become the leading company in the photovoltaic and agrivoltaics industry in France. Pierre-Yves Lambert founded Emeraude Energy in 2006, while Mathieu Debonnet built his expertise by creating Altus Energy in 2008.

Driven by a passion for entrepreneurship and convinced of the crucial role of photovoltaics in the future of energy in France, they created TSE to respond to a simple economic problem: to produce the least expensive carbon-free French energy while supporting the agricultural transition of French communities.

Their complementary backgrounds merged to give rise to an independent French company, with French capital, distributed as close as possible to stakeholders' needs (15 offices), resolutely committed to the French energy transition, combining innovation, technical expertise and environmental commitment.

Under the joint management of Mathieu and Pierre-Yves, TSE has established itself as the French expert in photovoltaics, and the reference in agrivoltaics.

Mathieu Debonnet and Pierre-Yves Lambert, founders of TSE

The Key figures

270

coworkers

3 GwC

under development

1 GWc

completed or under construction in 2027

260 000

residents - equivalent to annual consumption

TSE at the heart of our communities

Aerial view of territories
TSE is committed to actively working with local communities at the heart of our country to develop sustainable energy solutions which benefit all parties.

In a constantly changing energy and agricultural landscape, TSE is committed to designing each of its projects in response to the specific needs of the regions involved. We are fully aware that the success of our initiatives depends on their harmonious integration into local communities, which is why we attach the utmost importance to their active involvement.

A trusted partner

Land identification

A few weeks

Project development

6 to 24 months

Engineering and R&D

Throughout the project

Financing, valuation & sale

Throughout the project

Construction

6 months minimum

Connection

12 to 36 months

Operation & maintenance

Throughout the project

French shareholders combining public and private interests

TSE actionnariatTSE actionnariat
Joining TSE means becoming part of a company that has established itself as the leader in agrivoltaics in France. Together, we are contributing to 100% carbon-free, local and French energy. We are building a prosperous future for our land, regions, and the entire national community. Join us on this journey, where every action counts in building a sustainable energy future.

Any questions ?

 
Who is TSE?

TSE is a 100% French, independent developer and producer of carbon-free energy, founded in 2016. Our solutions are built on quality, attentive service, and innovation. We develop photovoltaic and agrivoltaic power plants across France. TSE has become the benchmark for agrivoltaics in France, supplying electricity to major industrial partners such as Biomérieux, STMicroelectronics, Les Mousquetaires, Agrial, and Albea.

 
Why does TSE talk about energy of trust?

First, TSE solutions are based on innovation and quality, and are fully operational. Second, because TSE is a solid company that has raised 500 million euros since 2022 and is backed by public (BPI) and private (Eurazeo, Crédit Agricole, etc.) shareholders. Finally, because our projects go beyond just producing electricity. They are co-designed with the agricultural sector, local stakeholders, and businesses to ensure they are understood, accepted, and beneficial to the region. Our growth, our competitive electricity, our agronomic results, and our commitment to biodiversity demonstrate our expertise. TSE is a member of French Tech and is B Corp certifiedTM.

 
What are TSE's main activities?

TSE develops and implements agrivoltaic and photovoltaic solutions, as well as competitive carbon-free electricity supply options for industrial companies and local authorities, notably through Corporate Power Purchase Agreements (CPPAs).

 
Why has TSE become a benchmark for solar energy and agrivoltaics in France?

TSE is built on a foundation of concrete evidence: an operational fleet and RTB equivalent to the annual electricity consumption of 260,000 people, 1GWp built or under construction by 2027, 3GWp currently in development, and over 270 employees across 16 offices throughout France. With its 9 agrivoltaic power plants, TSE is the benchmark for agrivoltaics in France. TSE is a member of French Tech and is B Corp certified.TM.

 
Why buy green energy?

Solar energy, qualified as green energy because it is not derived from fossil fuels, produces electricity that emits fewer greenhouse gases, remains at a stable price and secures a sustainable energy supply.

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