Thanks, it's good to know about this picea system.
For now and maybe always, it's probably more cost-effective to size the solar-electric system for winter months (if adequate roof / ground space).
For now and maybe always, it's probably more cost-effective to size the solar-electric system for winter months (if adequate roof / ground space).
Still, it definitely cannot generate enough to bring you through the german winter. Some example numbers I have read: A 10kWp solar system that generates up to 1,400 kWh in a summer month will only provide about 200 kWh in December.
And if you position it N-S you'll get slightly less power than a standard setup, but it'll be less concentrated in the summer, and also spread through the day more.
https://www.sciencedirect.com/science/article/pii/S266695522...