Nearly Zero Energy Buildings: analysis on monitoring energy consumptions for residential buildings in Piedmont Region (IT)

The energetic behaviour of ten nZEB built in Piemonte (region located in NW Italy) is analysed from experimental data. The energy consumptions are normalized for the weather conditions and size of the building, then the consumptions are compared with the design data. The data analysis shows that nZEB can be built in northern part of Italy and even if the real consumptions are slightly higher than the values expected from design. Low energy demand can be achieved and good percentage of renewable energy sources can be utilized, but some improvements may be done to exploit more renewable energy sources with storage systems and with restrictive legislation.