Power station sizing calculator
Load a scenario:
| Device | Watts | Hours / day | Duty % (fridges run ~40–50% of the time) |
|---|
Not sure about watts? Check the device label or our typical-draws table.
Your result
How to read the result
- Bare minimum is the capacity that exactly covers your plan. Real life adds unlisted loads, battery aging, and cold — that's what the comfort margin is for.
- Inverter check matters as much as capacity: the continuous rating must exceed your largest single device, and motorized devices (fridges, pumps) briefly draw about 2× at startup — that's the surge rating.
- Solar input assumes one good sunny day. If the panel wattage looks unrealistic, either accept a multi-day recharge or add capacity you can top from a wall outlet.
Got your number? Compare the models that fit it: the full sizing guide explains the math in depth, and EcoFlow vs Jackery (2026) covers the two brands that dominate most shortlists.
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