In a few words
A major player in energy performance engineering and renewable energy, Exoceth has been supporting its partners since 2003 in their energy transition and the reduction of their environmental impact.
Operating in the agricultural, tertiary, and industrial sectors, the engineering firm provides its expertise in decision-making support, design, project monitoring, assistance, as well as training and raising staff awareness on the use of energy and energy-intensive equipment.
Exoceth is based in Guer (56), centrally located in Brittany, with offices in Guipavas (29) and Saint-Herblain (44), enabling coverage across the greater western region of France.
Our company has been part of the Best Energies Group since 2012.
Our certifications
As a guarantee of the quality of our services, Exoceth is certified by OPQIBI, the certification body for engineering service providers.
HVAC engineering
1312: Study of standard heating and ventilation systems
VRD
1105: Study of civil engineering for buried networks
1319: Study of heat and cold distribution networks

Energy performance
1905: Energy audit of buildings (tertiary and/or collective housing) – RGE certified
1332: Regulatory thermal study for “collective housing and/or tertiary buildings” – RGE certified

Renewable energy
2010: Study of production systems using solar thermal energy – RGE certified
2012: Project management assistance for the implementation of energy production systems using biomass – RGE certified
2013: Engineering of production systems using geothermal energy – RGE certified
2008: Engineering of production systems using biomass combustion – RGE certified
Thanks to the RGE (Recognized Guarantor of the Environment) certifications, we enable our clients to meet the eco-conditionality requirements, particularly for obtaining ADEME subsidies.
Emmanuel, President of Exoceth
Our team
Our team is made up of experienced engineers and technicians capable of integrating all the areas of expertise required to carry out its missions.
Our team members provide solutions to our clients to help them meet their needs while reducing their energy bills, all within an environmentally responsible approach.