The nZEB as an active element of the energy system 3 years of operation! Presentation of the data for 3 years of co-operation of a 7.2 kWp roof PVE with a 26kWh home battery and a power grid. Presentation in PDF file can be download here: OC Fenix - 3 years of operation. Read more about... Fenix Jeseník Low energy house Reference house FENIX energy concept AES storage station