How long it takes to pay for itself
Payback is the upfront cost divided by the yearly saving. Profit is ten years of savings, less the upfront cost.
| Upgrade | Payback, years | 10-year profit |
|---|---|---|
| Kilowatt Club battery1 | 4.0 | £2,950 |
| £1,850 upfront, saves £480 a year | ||
| Solar panels2 | 9–12 | −£800 to £1,700 |
| £7,600 upfront, saves £680–£930 a year | ||
| Heat pump3 | 7 | £1,800 |
| Replacing an old gas boiler: £3,500 after the grant, saves £530 a year | ||
Sources
- Our EP6 simulation, after membership.
- Energy Saving Trust via MoneySavingExpert, 4.5 kWp, with export payments.
- Energy Saving Trust via MoneySavingExpert, less the £7,500 grant.