Our human size team is customer-focused, efficient and close to your projects.

Our mission
WattElse offers multidisciplinary expertise to develop and implement energy transition projects with companies and the public sector. Its global approach includes:
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- Energy strategy of entities and territories
- Analyzing and improving energy efficiency of buildings and industrial sites
- Proposing and managing alternative energy production industrial projectsosition et la gestion de projets industriels de production d’énergie alternative
The experts of WattElse have been active in the energy sector for several years and each teammember is a specialist in his/her own field:
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- Engineers, architects dealing with the technical aspects
- Economists dealing with financial challenges
- Legal experts specialized in urban planning, environmental and establishment of company laws
- Communication specialists to promote your project and popularize your energy strategy by 2030.

Mathieu van Gehuchten
CEO & Founder
Economist MBA (Twente)

Alexandre Ziegler
Head of Project Management
Agronomist

Florence Renaut
Administration and HR Manager
Graduated in Germanic languages

François Elie
Project Manager
Doctorate in environmental sciences

Johan Triquet
Project Manager
Bio-Engineer sciences
and technologies of environment

Guillaume Fery
Project Manager
Master in Geographic Sciences

Florence Née
Project Manager
Agronomist

Cécile Heneffe
Project Manager
Bio-Engineer chemistry and bioindustries

Jérôme Deghilage
Energy Expert PV
Agronomist

Guy Laffalize
Acquisition Manager
Sales

Étienne Frogneux
Acquisition Manager
Agronomist technician

Christophe Cap
Energy Engineer - Architect
Architect

Pierre Martin
Energy Strategy Consultant
Sales Engineer in environment, energy & logistics

Laurie Collard
Project Manager
Industrial Engineer in agronomy-environment

Xavier Walhin
Consultant Energy Expert
Civil Engineer