Our activity

GenSun is part of the Ponticelli Group since 2017. It is a family-owned group specialised in engineering, construction and maintenance of industrial facilities. The group employs 5,000 people worldwide, with a turnover of €950 million.

The Ponticelli Group assures the support of an industrial player who shares the culture of engineering, construction and industrial maintenance, and has a significant financial capacity.

To learn more about GenSun :

Gender Equality Index :

Since 2019, companies with at least 50 employees must calculate and publish their Gender Equality Index on their website.

The index, out of 100 points, is calculated from 4 to 5 indicators.

  • The gender pay gap,
    The gender pay gap, the gender pay gap in the distribution of individual pay rises,
  • The gender pay gap in promotions (only in companies with more than 250 employees),
  • The number of female employees receiving a raise after returning from maternity leave,
  • Parity among the top 10 earners.

For the year 2021, the overall result level is non-calculable.

Translated with www.DeepL.com/Translator (free version)

Our key figures

0 GWp
Solar power plants built or in progress
0 MWp
O&M portfolio (France and Export)
Collaborators worldwide
Countries: France, Portugal, El Salvador, Argentina and Tunisia

Our values

“Our four core values were born out of the chemistry between management and employee values. They have been adopted, have stood over time and have served as a standard. “


We build projects together, internally and externally with our clients. We prefer the term "partners" to "clients".

Technical challenge and creativity

We challenge ourselves on technical issues in order to build competitive, sustainable plants which uses the best available technology in our sector.

Environmental universalism

First French EPC to be ISO 14001 certified. We work at GenSun because we are committed to a cause. Our goal, our project, is to participate in the transition towards cleaner energy for the protection of the environment.


First French EPC to be certified ISO 9001 to establish our company on the basis of quality. The quality of our constructions offers to our customers the reliability in time they are looking for.

Our team

Stéphane Lasserre


Johan Poujol

General Manager
Johan Poujol is a graduate of ICAM in Toulouse, a general engineering school, and of Montpellier Business School (MBA). After a first experience of 5 years in the construction industry, Johan joined GenSun in 2010. After various positions, from the construction department to the price study and sales departments, Johan is now managing the company.

Stéphane Dorvaux

Deputy General Manager

Thomas Segura

Commercial Manager
Thomas holds a Master's degree in International Business Management and has a deep knowledge of the solar photovoltaic industry, having worked for various PV developers. He is the link between customers and GenSun's internal teams.

Frédéric Herniot

Director of Operations
Construction engineer graduated from E.S.I.T.C. in Caen, Frédéric Herniot has more than 10 years of experience in the field of international public works, and since 2015 he has been working on large-scale photovoltaic projects in South East Asia. During his career he had the opportunity to be introduced to lean management. He thus participates in the improvement of GenSun's performance by taking over the direction of Operations in 2020.

Alexandre Loizeau

Design Office Manager
Alexandre Loizeau is a graduate of ENSMA (Aeronautics, Poitiers). After 8 years of experience as a design engineer and then technical director in the TOPBIS Design Office (independent design office in photovoltaic and thermal solar energy, HVAC, building heating), he joined GenSun in 2015 to carry out the engineering of large international projects. He became Head of the Design Office in 2017.