That's relatively simple. It just sounds excellent. The electricity comes from the roof and is stored in the battery so that I can use it at night. Great! If you then get an offer from Solrfred, which includes an economic feasibility calculation, you already put the champagne on ice, that's how great it looks. Awesome, 9.2% return p.a. for a €23,000 solar system with electricity storage. And on top of that, I’m also saving the planet because it’s so eco-friendly and I save 49t CO² over 25 years. For that, my wife and I can fly to Vancouver and back five times with a clear conscience.
But when you start digging deeper, you realize it might not be that great after all. And certainly, my photovoltaic battery system will never be able to supply the LWWP, which just takes free heat from the air and which also includes a great saving calculation. Well, and the fact that neither batteries nor solarpanels are made from fine dust is unfortunately also true. As I said, that’s my thought process so far. To be honest, I still find the photovoltaic+storage+heat pump solution fascinating. It’s just that I’ve read a bit too much skepticism now, and I haven’t found anyone yet who can calculate for me in a well-founded way how such a system would perform for me.
Anyway, , I’m glad you are so clever and already know all this, and I’m sorry if people like me, who are just at the beginning of their journey to all-encompassing knowledge, bother you with their incapacity.