At present, ISOFOTON manufactures PV modules which are clearly optimised for PV electricity production, looking for a maximum relation between the number of PV cells and the overall surface of the module (packing factor). These PV modules, however, are not well suited for PV integration in transparent office buildings, where transparency is also a crucial aspect. Trying to find a balance between electricity production and transparency, ISOFOTON will manufacture 4 new PV modules made of glass-glass and glass-Tedlar (see figure 1).

During the developing phase, the main requirements of a first standardized PV ventilated fa? ade typology were defined: the fa? ade should start at the first floor of the building because the ground floor usually presents a different design; the width of the air gap must range between 40 and 60 cm to allow an easy maintenance and the inlet grille will be placed horizontally at the bottom of the fa? ade while the outlet grille will be placed vertically and formed by motorized blinds. In the summer, the connection with the HVAC system will be closed and the fa? ade will work only in free convection mode to improve the thermal resistance of the space in contact with. In winter, the fa? ade will act as a pre-heating system, coupled to the HVAC system.