Yeah, batteries won’t cut it really - need to store thousands of kWh for winter. I’ll have to look into the terms some more - afaik nothing is finalised yet, awaiting change in law. Thanks for input!
Batteries are to get you thru the night, forget winter.
2.3k euro for 5kwh [0] which sounds more than Tesla Powerwall. You probably want more, but you do your math. Probably you'll want to return more to network in summer and use that in winter. Store peak winter excess