Your meter readings already include any car charging, so the figures above are not used with this option.
Only use this if you do not already have solar or a battery. Octopus gives us what you imported from the grid, not what your home used. If you already generate or store your own, that has already been taken off these readings, and adding a modelled system on top would count the same saving twice and overstate what it is worth. With an existing system, enter your total annual consumption above instead.
Your Predbat setup already has solar or a battery configured, so meter readings from this account will understate what your home actually uses. Enter your annual consumption above rather than importing it.
Used only for the no-PV/battery comparison, which has nothing to export - so only the import side applies. Someone with no system would not be on a battery tariff, so pricing that scenario on one credits it with a saving it could never have had. The price cap is the sensible default.
Estimating…
Estimated from typical UK install prices. If you have a real quote, enter it below and it will be used instead — leave a box at 0 to keep the estimate.
Most quotes cover the whole installation, so the second box is usually the one you want. The battery price is taken as the difference between the two, and the solar-only figure is what the PV-only payback is worked out from — leave it at 0 and that row uses the estimate instead.
Keeps each sampled day's plan so you can inspect it below. Makes the saved run much larger.
