Energy Bill Lab

Refrigerator Electricity Cost Calculator

Calculate monthly and annual electricity costs for your refrigerator using rated power, compressor cycling percentage, or official EnergyGuide annual kWh benchmarks.

Illustrative Refrigerator Benchmarks
Choose U.S. State

Estimated Refrigerator Operating Cost

Monthly Cost

$6.24

37.8 kWh / month
Annual Cost

$75.88

460 kWh / year
Daily Cost

$0.21

1.26 kWh / day
Effective Power Draw

52.5 W

35% duty cycle
Formula: kWh = (Watts × Hours/Day × Days × Duty Cycle %) / 1,000 | Rate used: 16.50¢/kWh

Understanding Refrigerator Power Draw and Compressor Duty Cycles

Refrigerators remain plugged into the electrical grid 24 hours a day, but their cooling compressor runs intermittently. Under typical room temperatures, a modern residential refrigerator compressor runs approximately 30% to 45% of total time.

Refrigerator Energy & Cost Formula:Daily kWh = (Wattage × 24 hrs × Duty Cycle %) ÷ 1,000Monthly Cost ($) = (Daily kWh × 30 days) × (Rate ¢/kWh ÷ 100)

Frequently Asked Questions About Refrigerator Power

How much electricity does a typical refrigerator use per year?

A modern standard residential refrigerator (20–25 cu ft) consumes between 400 and 600 kWh annually ($73 to $110/year at 18.4¢/kWh). Older refrigerators built before 2000 often consume 1,000 to 1,500 kWh per year ($184 to $276/year).

Why does refrigerator power draw vary throughout the day?

Refrigerators operate in cycles. When the compressor is actively chilling the compartment, it draws 100W–250W. When the target temperature is reached, the compressor shuts off, dropping power draw to 2W–5W (standby). During the automatic defrost cycle, electric resistance heaters briefly draw 400W–600W.

Does keeping the refrigerator full save electricity?

Yes. Solid food and chilled liquids act as thermal mass, holding temperature better than empty air. When you open the door, less cold air spills out into the room, reducing the recovery time the compressor needs to run.

How does kitchen ambient temperature affect refrigerator bills?

For every 10°F increase in ambient room temperature above 70°F (such as in a hot garage or during summer without AC), refrigerator energy consumption increases by roughly 20% to 25% due to higher thermal transfer through the door seals.

Data Sources & Methodology

All U.S. state electricity rate averages provided in this calculator are sourced directly from the official U.S. Energy Information Administration (EIA) monthly residential dataset.