We have a 2kW array, it cost just under £4K fitted. I expect it will take about 10 years to pay for itself, but so far we have cut our electricity bill by 30% and exported 700 kWh this year (about 70% of what we generated). Just had an e-mail about a battery solution – that came in at £4K fitted. Getting the feed in tariff has been interesting, Scottish Electric have been very slow processing the forms and paying us. We have had to constantly nag, when my wife pointed out that they wouldn’t be so accommodating if we owed them money they finally paid us
Sad that government policy took the legs out from under the solar industry, just as it was getting started. Mind you £18billion for nuclear in 2025 looks like a bargain in comparison.
A much cheaper solution is to just dump excess leccy into an immersion heater.
but this makes the least sense for the environment.