Every home is different. Currently payback will be slower for me as I’m in a fixed energy deal. People now paying 55p a Kw will see a faster return and in October payback times will be even faster.Why do you think I'm being sarcastic? Typically you're into double digits of years before a system pays for itself so around three years is amazing. I'm very keen to see more details.
Edit:
I see you've posted above.
Is it £1,500 or £240?
obviously you’re not convinced by solar power, maybe use your emotions on fighting the government outside 10 downing st.