About
Founded in 1999, Addenda is a private headquartered in Auch, France with approximately 50-200 employees specializing in Energy Storage.
Addenda is a 30-year-old consulting and engineering firm dedicated to environmental and energy optimization in buildings and urban environments. The company assists clients from project conception through post-occupancy monitoring, integrating sustainability with architectural integrity. Services include energy audits, HQE and BREEAM certification support, thermal dynamic simulation, biosourced and low-carbon design, and territorial energy transition planning. Notable projects include BEPOS (Positive Energy) buildings, BBC (Low-Energy) structures, and eco-district development. The company was acquired by its employees in January 2024.
Headquarters
Auch, France
Founded
1999
Employees
50-200
Company Type
Private
Business Models
Value Chain
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