What does Lesosai do?

Lesosai is building energy optimization and certification software for engineers, architects, and thermal specialists. It supports Swiss and European standards including Minergie, DGNB, and net-zero certifications with BIM/BEM integration.

Where is Lesosai located?

Lesosai is headquartered in Lausanne, Switzerland.

What energy sectors does Lesosai operate in?

Lesosai operates in Energy Storage.

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Lesosai

Lausanne, Switzerland

Energy Storage

Founded 1984

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About

Founded in 1984, Lesosai is a renewable energy company headquartered in Lausanne, Switzerland specializing in Energy Storage.

Lesosai is a comprehensive software platform for ecological and energy optimization of buildings, designed for engineers, thermiciens (thermal engineers), and architects. The software calculates thermal comfort, heating and cooling loads, hot water requirements, and underfloor heating systems. It supports multiple Swiss and European building standards and labels including SIA 380/1, SIA 384.201, Minergie, Minergie-ECO, DGNB, Sméo, CAP2050, and Lenoz (Luxembourg). The platform integrates BIM (Building Information Modeling) and BEM (Building Energy Modeling) capabilities, enabling data exchange with various tools and standards (IFC, gbXML, BCF). Lesosai calculates grey energy, biogenic carbon, environmental impact points (UBP ecopoints), and provides hourly, monthly, and annual thermal balance analyses. The software is multilingual (French, German, Italian, English) and has been developed by professionals with direct involvement in standard-setting organizations.

Headquarters

Lausanne, Switzerland

Founded

1984