GreenBIMxELS: A Data Space Unlocking Environmental Value for Public Facilities in the Construction Sector

Abstract: Public administration buildings generate vast operational data, which is rarely used for environmental purposes. GreenBIMxels, a research project led by the Polytechnic University of Catalonia, explores how Data Spaces support environmental assessments in public facilities. This paper defines environmental services for BIM models within a Data Space named UPCxels. The study addresses the interests of public administrations and private-sector stakeholders, examining how Data Spaces can respond to their needs. Three use cases are designed by combining participatory workshops and a questionnaire survey. The use cases include energy-efficiency, water-consumption optimization and carbon-footprint assessment, each operationalized through KPI sets and BIM/IFC-based properties.