I've given a worked example of the cost of heating my HW with gas. It's very easy for me to find, because, in summer, that's what I use gas for. I've shown how much gas it is, and what it costs.
I also know that there are only about half the days in the year when my solar panels are generating enough electricity to heat the HW. So even if they cut HW gas usage to zero on those 183 days (they don't), they couldn't cut the HW gas usage by more than 50%.
So 75% is wrong.
I did invite hardwork to provide his figures so we can see his calculation. I don't know if he will. Would you like to provide yours?
I also know that there are only about half the days in the year when my solar panels are generating enough electricity to heat the HW. So even if they cut HW gas usage to zero on those 183 days (they don't), they couldn't cut the HW gas usage by more than 50%.
So 75% is wrong.
let's see your figures then.
Que @JohnD making a flippant, non sensical or otherwise contrived comment to back track from what was said. If an apology actually appears then I apologise in advance for that.
Otherwise I agree John, payback is carp, product is carp but I can see a potential in commercial possibly but it needs years and years of work to become close to feasible.
Jon
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