The company
CLARA is developed by BuildWind, an engineering company in Brussels that has worked since 2018 on the numerical simulation of the built environment: wind, air quality, heat and wind-induced noise around buildings and across cities, for architects, developers, municipalities and industry.
Over the years BuildWind has moved from consultancy projects to simulation and data platforms. CLARA is the latest step: the methods refined in hundreds of studies, packaged into a system that generates and runs environmental digital twins of entire cities. The first application, BrusAir, has served the City of Brussels since September 2025.
BuildWind srlRue Bara 173-177
1070 Brussels, Belgium
VAT number: BE0687548074
Web: www.buildwind.net
Email: [email protected]
Research projects
The technology behind CLARA has been developed and validated through collaborative research projects with European, national and regional funding, alongside the peer-reviewed publications of the team.
SPICECO
CELTIC-NEXT · Innoviris 2021-RDIR-17bDevelopment and validation of an urban air quality predictive model based on Computational Fluid Dynamics simulation and machine learning. The direct scientific ancestor of CLARA's air quality engine.
SCULPT
ESA Kick-Start programmeSatellite-based CFD Urban Landscape Processing Tool: bringing Sentinel satellite data directly into high-resolution urban simulations for wind and thermal comfort.
MODELAIR
HORIZON-MSCA-DN-2021 · No 101072559Tools and models to reduce air pollution in urban areas, contributing to the EU Mission on climate-neutral and smart cities.
WEB, Wind Energy Brussels
Innoviris 2022-JRDIC-7aCombined wind simulation and lifecycle analysis for the development of wind-driven renewable energy districts in the Brussels Capital Region.
PLENTY-LIFE
LIFE Project Grants 101081061Cross-sector planning and capacity building to enable small and medium-sized municipalities to develop and monitor sustainable strategies for the transition to clean energy.
Partner with CLARA
We are looking for partners to co-create new local digital twins across Europe:
- Cities and public authorities looking for high-resolution urban microclimate monitoring.
- Research centers with expertise in urban microclimate physics.
- Tech SMEs: IoT hardware and smart-city platform providers.