Off the back of this thread, I went to the Octopus site for Heatpump and Solar just for my own curiosity.
- Heatpump-
- cant quote as not installing in my area.
- My Home and Gas boiler is 7 years old now and consumption is just under 3,000kWh.
- I assume I would need an HW Cylinder install (just COmbi for now) as well as radiator upgrades.
- I am not sure if I would require pipework mods?
- Solar-
- Current Annual Usage is 1,400kWh
- Works out at roughly £25/month for units only @ 22p/kWh (removed the SC as I would still have to pay this)
- For a 6 panel install and 5kWh Battery, it would be £9,300 (from Octopus site)
- Octopus says - Typical Saving of 78%-94% so, midpoint of 86% would give saving of £21/month
- Going by that, it would be 37 years ROI? (have I got that wrong?
) - I appreciate elec will only go up but still....
- For Solar only - £6,700 = 27 years ROI?
I am not sure what grants etc I have access to (full time employment, no benefits, no vulnerable people etc) so may be less?
EDIT: I haven't factored in Export though so not sure how much to take this into account (Roof is standard pitched, Directly South Facing and no trees or anything to get in the way - completely open)