Estimate your home backup in about a minute.

1

What needs to stay on?

Set quantity · tap a wattage to edit
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Continuous load 0 W add devices
2

How long should it last?

hours
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How we size it

✓
Counts what stays on across your typical outage length.
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Adds a reserve so the battery is never run down to empty.
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Matches battery, inverter and solar as one system.
Recommended capacity
Live estimate
0.0kWh
usable energy storage needed
Recommended system
Battery, inverter and solar, sized to work together as one system.
BatteryBest match
BOX42
5.12 kWh · stackable · LiFePO4 · pure sine · UPS
Inverter
Solar to recharge
At a glance
Continuous load
0 W
Peak demand
0.0 kW
Est. runtime
0 hrs
System capacity
0.0 kWh
Your tailored backup system
Get a quote and our engineer confirms the exact sizing for your home.

Continuous loads (fridge, lighting, heating) are sized as W × outage hours. Intermittent appliances (kettle, washing machine) are sized as W × typical run time. Estimates assume 90% system efficiency and a ×1.2 reserve. Final sizing is confirmed by a Genixgreen engineer. This is an estimate, not a guaranteed runtime.