Sireos, a major player in the energy transition

Welcome to the dynamic world of renewable energy and energy transition ! At Sireos, we are proud to be part of this significant transformation as a company specializing in the design and construction of large-scale photovoltaic solar power plants. In an era where energy transition is becoming a global priority, we firmly believe that the future will be shaped by renewable energies, particularly solar energy. It is in this spirit that our company is actively committed to playing a key role in the construction of photovoltaic solar power plants. We recognize that solar energy represents an inexhaustible and environmentally friendly energy source. However, to fully harness its potential, it is essential to have advanced, efficient, and reliable technologies. This is precisely where our teams play a crucial role in supporting stakeholders in this sector, both today and tomorrow.

Every day, our team of experts works hard to deploy power plants with the highest standards of quality, delivering everything with the lowest possible construction costs. With our commitment to customer service quality and our ability to anticipate market needs, we are able to offer a wide range of solutions. All our projects are carefully designed, taking into account our customers’ unique specifications as well as industry standards and know-how. Sustainability in construction and in relations with all stakeholders is the central pillar of our corporate philosophy. At SIREOS, we are proud to play our part in building a cleaner, greener energy future together with our customers and partners. Every initiative we undertake is guided by our shared vision of contributing to a world where renewable energy becomes the norm.

SIREOS Team

Nicolas Béret

Chairman and CEO,

With expertise accumulated over almost 15 years, Nicolas Beret founded SIREOS based on strong values of team spirit and agility. With a solid background as head of the Photovoltaic BU of a national construction group, Nicolas is skilled in the management of large-scale photovoltaic projects. Under his leadership, Sireos is committed to offering innovative solutions that support its customers' energy transition.
Carlos Mesias

Partner,

With over two decades of commitment to the energy transition, Carlos Mesias embodies the spirit of innovation at Sireos. He is also Chairman of SWEN group and WATTEOS. His diversified career path within a national group, notably in regional multi-business management, highlights his ability to lead large-scale initiatives for the energy transition of territories. His vision and leadership, forged over 22 years of experience, are essential to developing sustainable and effective solutions.
Léo Chandioux

Business Development Director,

Léo Chandioux, with over 8 years experience in contract and purchasing management, both within an international IPP and a French EPC, brings crucial expertise to Sireos' business development. His strategic management of contracts on a global scale and his innovative approach to processes play a key role in Sireos' expansion, particularly internationally.
Sébastien Barriol

Technical Director of Engineering and Methods,

Sébastien Barriol brings over 15 years experience in electrical engineering to Sireos. He heads up engineering and methods, bringing in-depth expertise in the design and implementation of photovoltaic power plants. He plays a key role in technical innovation and continuous improvement, ensuring the quality and efficiency of Sireos projects.
Sébastien Job

Electrical works Manager,

Sébastien Job, who has been with Sireos as the Electrical works supervisor since 2022, brings over 14 years experience in electrical engineering. His role at Sireos enables him to supervise teams and ensure the quality and safety of photovoltaic worksites. His expertise in the cabling and assembly of PV power plants guarantees the operational excellence of Sireos projects.
Lucas Teissier

Project Manager,

Lucas Teissier has over 5 years experience in managing renewable energy projects, particularly floating photovoltaics, a distinctive skill in the market. His management of construction commitments to customers strengthens customer satisfaction at Sireos.
Quentin Crouzat

Project Manager,

With over 5 years experience in photovoltaic engineering, Quentin Crouzat ensures rigorous monitoring of construction commitments and effective management of customer relations, contributing to the quality and performance of Sireos projects.
Théo Dumanchin

Project Manager,

Théo has 8 years' experience in renewable energy project management, encompassing the development and execution of turnkey contracts. He worked for a French developer before joining EPC to work on international hybrid projects. As well as playing a pivotal role in coordinating all project players, Théo will be a key contact for SIREOS clients.
Rémi Hector

EPC Major Projects Director,

Rémi, with almost 15 years experience with various photovoltaic EPCs, stands out for his mastery of construction processes and his ability to manage large-scale photovoltaic projects. His expertise ensures that all SIREOS projects are carried out to the highest standards.
Pauline Leriche

General Counsel,

With over 10 years experience in business law and specializing in the renewable energies sector, Pauline Leriche is a pillar in the securing and structuring of Sireos' legal affairs. Her ability to navigate contractual and regulatory complexities effectively supports Sireos' strategic objectives.
Mathieu Geindreau

Design Officer,

Mathieu Geindreau plays a key role at Sireos as Technical Project Manager, drawing on his 7 years of experience and his specialization in photovoltaics acquired in his past experiences. His technical expertise, from design to optimization of PV projects, contributes to the efficiency and performance of installations. With a background in electrical and energy engineering, Matthieu has been bringing essential expertise to the design of Sireos projects since February 2023.
Amadou Konate

Design Engineer,

Amadou Konate, with Sireos since 2022 as PV Design Engineer, brings in-depth expertise in solar energy engineering and power generation from his specialized training in Sweden and Belfort. He excels at conducting calculations, creating layout plans on AUTOCAD, and coordinating on construction sites. His skills cover electrical sizing, consultation and tendering, contributing significantly to the efficiency and accuracy of Sireos' photovoltaic projects.
Claire Promé

Administrative and Financial Director,

Claire Prome brings over 12 years experience in finance and management to Sireos. With significant roles at ALTRAD and GAEA Waste Management, she has demonstrated her ability to improve service efficiency. Her consulting for NewOrch, her experiences at SUEZ environnement and Airbus reinforce Sireos' financial strategy for sustainable growth.
Guilhem Ratier

Human Resources Director,

Guilhem Ratier, with over 15 years experience in various sectors, including Zimmer Biomet and Capgemini, effectively leads Sireos' HR strategy. His global HR management, focused on recruitment, employee development and labor relations management, supports the growth and well-being of employees at Sireos.
Damien Rouquette

QHSE Manager,

Damien Rouquette is a seasoned professional in the field of quality, health, safety and environment (QHSE), with over 12 years experience at Prométhée Conseil as a prevention officer for major construction and deconstruction projects (thermal power plants, university hospitals, etc.). At SIREOS, he implements the QHSE policy and measures to guarantee regulatory compliance on the safety and environmental aspects of projects. His solid training and proven skills in risk management and continuous improvement enable Damien to play a key role in promoting a culture of prevention and sustainability within the company. His leadership and commitment make him a valuable asset to SIREOS in achieving its QHSE objectives.