A 24-hour refrigerator backup plan
A 24-hour plan is the watt-hours that match one day of your fridge’s average use.
Federal outage guidance treats an unopened refrigerator as a matter of a few hours, not a full day. A battery sized for 24 hours of average energy is not a substitute for that temperature guidance. Read the food-safety page beside any runtime.
Illustration: 500 kWh per year
This is not your refrigerator unless its EnergyGuide figure really is 500 kWh/year. Average draw is about 57 W. Adding the 10 W idle allowance makes the AC-equivalent load about 67 W. Minimum capacity for 24 hours is 2,104.4 Wh.
No in-stock model covers this 24-hour illustration. The largest in-stock capacity is the DELTA 3 Max at 2,048 Wh, about 23.4 hours. Preorder listings that do cover it are below. Out-of-stock models stay on Compare. Change the annual kWh on the calculator.