Your savings potential: It can be that simple.
Normal consumption
NUMBER OF PEOPLE
HOT WATER
PER DAY
Average value, though dependent on individual consumption behavior
Particularly dependent on consumption as well as hot and cold water temperature; here: 40 l per person, 60 and 10°C.
Potential Saving
Depends in particular on the performance, efficiency, and location of the PV system, here: 7.5 kWp in Freiburg
Depends on the gas or heating oil tariff and feed-in tariff, here gas price of 15 cents/kWh