The BIM4Energy Calculator enables users to define a building by country, city, and type, simulate energy efficiency upgrades such as insulation, efficient windows, and heating, ventilation, and air conditioning systems, and compare baseline versus improved energy demand, annual costs, and carbon emissions.

The tool supports informed decisions on building renovations by visualising potential benefits of improvements, making energy renovation options more transparent for homeowners, managers, and public authorities.

This web application provides access to information on energy efficiency through data generated from advanced simulations using Building Information Modelling (BIM) methodology. It supports decision-making, promotes sustainable construction, and demonstrates the capacity of BIM simulation to optimise the energy performance of buildings.