As part of this project, the CTTC UPC has developed a virtual thermal-fluid model for a real dwelling in the Netherlands, using its NEST-Building platform for simulating systems; object-oriented parallel software designed to simulate any building due to its modularity. Using this model, the following can be simulated rapidly in detail: a map of temperatures for the entire building, the CO2 concentration in all dwellings and in the ventilation system, and the thermal load. The model has been used a test bank for advanced control algorithms developed in the project.