Three tested scenarios
| Scenario | Assumptions | Annual energy | Annual cost |
|---|---|---|---|
| Lower-use reference | 100 W, 24 h/day, 7 days/week, 30% duty; 0 W standby; $0.18/kWh | 262.800 kWh | $47.30 |
| Reference scenario | 150 W, 24 h/day, 7 days/week, 35% duty; 0 W standby; $0.18/kWh | 459.900 kWh | $82.78 |
| Higher-use reference | 200 W, 24 h/day, 7 days/week, 45% duty; 0 W standby; $0.18/kWh | 788.400 kWh | $141.91 |
All scenarios use $0.18/kWh. These are transparent examples, not ratings for a particular refrigerator.
How the estimate works
The duty cycle represents compressor run time within the day. The preset does not classify off-cycle time as avoidable standby because refrigeration must remain powered.
What changes refrigerator use?
- Model, size, age, insulation, seals, and defrost design.
- Kitchen temperature, ventilation clearance, and condenser condition.
- Temperature setting, door openings, and warm food loads.
- Ice makers and through-door features.
Safe, useful savings
Maintain seals, allow recommended ventilation, keep coils clean where the manufacturer instructs, and use appropriate temperature settings. Do not place a refrigerator on a schedule or disconnect it to chase standby savings; food safety and temperature control matter.
Measure complete cycles
A single instantaneous watt reading is weak evidence for a cycling load. A plug-in meter reading across at least a full representative day is better; longer can include defrost and temperature variation. If an energy label provides annual kWh, it may be a stronger standardized comparison than a wattage label.
Calculate your refrigerator cost
Related: washing machine cost · methodology · accuracy guide
Last reviewed: August 14, 2026