Portable power and solar generators

Power Station for a 24-Hour Outage: Fridge, Phones and Lights

Published · By the SolarPanelX editors · Updated · See individual checks and dates below

Summary

Size the power station from measured daily energy, not the refrigerator's running watts alone. A refrigerator compressor cycles; multiplying 120 W by 24 hours is a continuous-load scenario, not a typical fridge measurement. Include phones, lights, networking and conversion losses, then check starting-power requirements separately.

Build a daily energy budget

LoadExample assumptionEnergy
RefrigeratorMeasure over a representative day, or divide its annual kWh label by 365 for a rough starting pointUse your appliance's Wh/day
Two phones11 Wh each, one recharge22 Wh before charging losses
LED lantern10 W for 5 hours50 Wh
Laptop60 W for 2 hours120 Wh
Router or satellite terminalActual average watts multiplied by hours of useAdd separately

The three small-load examples total 192 Wh. They exclude networking and the refrigerator. For illustration, a fridge measured at 1,000 Wh/day makes the total 1,192 Wh before station losses and any reserve; that is an assumed example, not an average for refrigerators.

Convert required energy into battery capacity

Using 85% usable delivery only as an illustrative planning assumption, 1,192 Wh divided by 0.85 is about 1,402 Wh of nominal capacity. A unit near 1 kWh would fall short of this example without recharging. A different refrigerator or ambient temperature can change the result substantially.

Measure energy over time and check the station manufacturer's standby draw, operating limits and output rating. A nameplate running-watt figure alone does not capture compressor duty cycle or startup demand. Do not treat a quoted runtime for another refrigerator as a guarantee for yours.

Keep food safety separate from the energy calculation

The FDA recommends appliance thermometers, keeping refrigerator doors closed and a refrigerator temperature at or below 40 F. An unopened refrigerator generally keeps food cold for about four hours without power. That guidance is not a schedule for repeatedly switching the fridge off. We have removed the earlier suggestion to run it for part of each hour; use temperature monitoring and FDA food-safety guidance instead.

Solar is a possible refill, not a guaranteed daily supply

Panel rating is measured under test conditions. Season, shade, orientation and input limits determine actual charging. Budget an outage without assuming the next day will be sunny, and check the total daily energy including any networking equipment before selecting a capacity class.

Two Ways to Run a House From a Power Station in an Outage: Extension Cords, or a Sub-Panel an Electrician Installs

Is a "Solar Power Station" Something You Can Buy, or a Power Plant?

Shopping for one? Browse portable power stations →

Sources

  1. Geneverse Support — FAQ - HomePower ONE PRO (fridge wattage range and runtime formula)
  2. EcoFlow — DELTA 2 Portable Power Station (refrigerator runtime, 11 Wh per phone charge)
  3. EcoFlow — DELTA 2 User Manual (solar input limits)
  4. EcoFlow US — DELTA Pro 3 Portable Power Station (400 W panel charge time)
  5. Starlink — Starlink Mini Specifications (average power)
  6. Jackery — Explorer 2000 Plus Portable Power Station
  7. U.S. FDA — Food and Water Safety During Power Outages and Floods (checked October 23, 2026)

We have not tested these products. Specs, prices, stock and terms are as published on these pages on the date above and can change; check the manufacturer or retailer before you buy.

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