Home backup power, by the numbers

Will it run your house when the grid goes dark?

Size a power station for your fridge, sump pump, CPAP, and lights with real math, not marketing. Every spec and price is sourced from the manufacturer and dated.

  • Calculator-first. Surge watts, watt-hours, and inverter losses, shown.
  • Sourced & dated. Specs link to official pages with a "checked" date.
  • Honest. AI-assisted research. We never claim hands-on testing.
4 hrsHow long a closed fridge keeps food safe without power (FoodSafety.gov)
85%Inverter efficiency we assume in every estimate (why)
8Power stations in our sourced spec dataset, checked Oct 7, 2026

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