I had them installed 1 week before Putin invaded Ukraine, and as we are 100% electric, we have had maximum return. They will have paid for themselves by the end of 2025, and will last another 20+ years. They save me £1,200+ a year.

I'll soon be getting battery storage, as well as excess solar, they will top up at the Economy 7 rate overnight. This will save me a minimum of £700+ a year.