I am not sure where you live, but in the northern of Italy it's really possible. I have installed a 12kW system in 2018 with 20kWh of storage. I also have heat

I am not sure where you live, but in the northern of Italy it's really possible. I have installed a 12kW system in 2018 with 20kWh of storage. I also have heat-pumps for sanitary hot water with a 100L tank and AC in summer + an EV. I admit that in winter or particularly cloudy weeks I still need to get some energy from the grid, but 1) that's likely because the house I am in was built in the 80s and the thermal insulations is terrible compared to modern materials [1] and 2) if I were to put something like dual photovoltaic-thermal hybrid panels [2] likely that wouldn't be an issue anyway. [1] https://www.thermablok.co.uk/#:~:text=Classed%20as%20a%20Super%20Insulation,refurbishments%20and%20energy%20efficiency%20retrofits https://www.thermablok.co.uk/#:~:text=Classed%20as%20a%20Sup.... [2] https://dualsun.com/en/products/dualsun-spring/ https://dualsun.com/en/products/dualsun-spring/