**3.2.6 Photovoltaic (PV) panels**

The PV panels used were blue-coloured poly-crystalline ones. These were integrated into a south-facing, ventilated PV façade. Their mean surface temperature was lower than the mean air temperature, while their absolute maximum temperature reached 44 oC. It is important to note that, around sunset, the PV panels were cooler than the air by 4.2 oC. These findings are considered very important because they show that during the summer period, southern facades clad with PV panels do not affect thermally the microclimate, while contributing to the use of renewable energy.
