We were planning to get 18kW system installed on roof, but to get sign off from power grid we would need to upgrade our power lines at great expense (we are end of line rural), so I am wondering about using solar farm for additional capacity (when it’s available).
18-25 €/kw = €200 per year times 25 years = 5k€ of 8k€ install is
62.5% of your system cost... This actually buys you some off the shelve batteries (5kwh so far IIRC) which might alleviate your line capacity issue (not sure tho).
Plus they reserve right to set it whatever they want it and you have no practical way to sell your investment...
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
We've got a quote for €6k - €2.5k subsidy for 8KW system. We use a ton of power - which is a main factor how quickly you get your money back.