We received a quote from the electrician for a 10 kWp photovoltaic system. However, I am wondering whether investing in a 10 kWp system is really cost-effective or if a smaller system might be sufficient. Our four-person household consumes around 4,500 kWh in our rented apartment without a heat pump. In our planned single-family house (140 m² (1,507 sq ft), KfW 55 standard), there will be an air-to-water heat pump and possibly an electric car in the future. I am not familiar with the energy consumption of heat pumps, but wouldn’t 8 kWp or even less be enough? We do not want to feed electricity back to the grid, and the feed-in tariff is not a reason for us to choose a larger system.
The idea does not come from the individual modules or their arrangement, but rather from the fact that inverters over 10kW as hybrids are, as far as I know, not available, and with 2 strings in parallel, the smaller inverters cannot handle all the current.
If 15kW hybrids exist, then we agree 😉
If 15kW hybrids exist, then we agree 😉