Due to the specific nature of the works, four different public tenders have been issued. The first two subcontractors were chosen in December 2014. The first company will undertake replacement works of the main curtain-wall facade. The second subcontractor will install the biomass boiler, pellets storage silos, the prototype ORC-unit, piping, cables and logic control of the BRICKER system.
Tenders 3 and 4 have received budgets in 2015 and contracts will be signed by June. The third tender concerns insulation works of the roofs with PIR foams (with and without PCMs) and the forth includes the replacement of the windows frames, façade insulation and integration works of 22 prototypes of air handling units at the top of the selected windows.