Worked examples
Battery size optimiser examples
Compare 5 kWh and 10 kWh batteries across 2–15 kWh/day of shiftable energy. The larger battery only gains value when it can actually be used.
2 kWh/day shiftable energyCompare illustrative 5 vs 10 kWh batteries · larger battery adds little value3 kWh/day shiftable energyCompare illustrative 5 vs 10 kWh batteries · larger battery adds little value5 kWh/day shiftable energyCompare illustrative 5 vs 10 kWh batteries · larger battery adds little value7 kWh/day shiftable energyCompare illustrative 5 vs 10 kWh batteries · extra capacity payback 16.9 yrs10 kWh/day shiftable energyCompare illustrative 5 vs 10 kWh batteries · extra capacity payback 6.8 yrs12 kWh/day shiftable energyCompare illustrative 5 vs 10 kWh batteries · extra capacity payback 6.8 yrs15 kWh/day shiftable energyCompare illustrative 5 vs 10 kWh batteries · extra capacity payback 6.8 yrs
Inputs on these pages are illustrative. Replace them with your own tariff, product, quote or household figures in the linked calculator before making a decision.