sicetaitsimple wrote:
Ok, there we are already in the "sophisticated" .
I had imagined a "simple" production of domestic hot water from thermal panels, in which case the slightly more dimensioned "all PV" solution seemed to me much simpler and certainly less expensive.
Domestic hot water is good, but you have to think bigger ...
In fact, I have more than 1000 m3 to heat, and little things help a lot. The sun, currently being free, well, it is "inexpensive"!