You need to consider that you are normally limited to 3.7kw for a single phase electrical supply.
There are ways around this but you need to get permission from the local DNO.
Your installer will guide you on that. Alot of it boils down to your incomer. I’m on the end of a country supply. I can’t go bigger – they tried for me 🙁
Consider that lead times are silly just now due to the covid break. We are booked in for end of next month having originally been February. -booked in November.
We went with AES solar in Forres but I suspect if your on the downs that’s a touch far for you.
Interested to see what opinions on battery’s come up. When I looked in sept/Oct I couldn’t see past Tesla’s battery the others looked a bit shit by comparison.
But technology was moving fast so opted to not take the Tesla battery due to the lead time being effectively 2022.