Kalegos
Building energy consultancy for property owners, developers and project teams across France
Highlights
- New on EvolcAdded 2026-11-14
About Kalegos
Kalegos is a thermal engineering consultancy providing regulatory energy studies for new construction and renovation, including RE2020, RT2012 and existing-building compliance. Its services also cover HVAC design, energy audits, and technical audits and maintenance support for building systems.
Customers include project owners, developers and teams working on residential and tertiary buildings. Online services provide RE2020 and RT2012 studies and attestations; other services include engineering and consultancy work.
Founded in 2014, Kalegos is headquartered in Nantes, with offices in Caen and Saint-Malo, and works across France. It has construction, renovation and operations-maintenance divisions.
Product: Thermal engineering studies, HVAC design, energy audits, and building systems operation and maintenance support.
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