How much does a fridge freezer cost to run?

Updated 7 November 2026 · ClearCost UK · 3 min read

A fridge freezer uses about 40W. At 27p per kWh, running it around the clock (average power) costs about £0.011 an hour, £7.89 a month and £95 a year.
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Fridge freezer running cost at different electricity prices

The figures use 40 watts and around the clock (average power). Your own price per kWh is on your electricity bill, so pick the row closest to it, or change the numbers in the calculator.

Cost = watts ÷ 1,000 × hours × price per kWh. For a 40W fridge freezer, one hour uses 0.04 kWh.

Fridge freezer: 40W, around the clock (average power)

Electricity pricePer hourPer dayPer monthPer year
20p per kWh£0.008£0.19£5.84£70
25p per kWh£0.010£0.24£7.30£88
30p per kWh£0.012£0.29£8.77£105
35p per kWh£0.014£0.34£10.23£123

Typical wattage. Check the label on your own appliance.

Fridge freezer running cost by hours of use

How long you use it matters more than almost anything else. The table shows the cost of using a 40W fridge freezer for different amounts of time each day at 27p per kWh.

Fridge freezer at 27p per kWh

Hours per dayCost per dayCost per monthCost per year
30 minutes£0.005£0.16£2
1 hour£0.011£0.33£4
2 hours£0.022£0.66£8
4 hours£0.043£1.31£16
8 hours£0.086£2.63£32
24 hours£0.259£7.89£95
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How much power does a fridge freezer use?

A typical fridge freezer is rated around 40W, which is 0.04 kW. Over a year of the use above that adds up to about 350 kWh. Average power over 24 hours. The compressor switches on and off, so the real draw is much higher while running and zero while off.

Wattage varies between models. Look for the power rating on the label, in the manual or on the maker's website, and enter it in the calculator for an exact answer.

How it compares with other appliances

Typical wattage and typical use for each appliance, at the same electricity price. A high cost per hour does not always mean a high yearly cost, because it depends on how often you use it.

Compared at 27p per kWh

ApplianceTypical powerCost per hourCost per year
Fridge freezer (this page)40W£0.011£95
Chest freezer35W£0.009£83
LED TV (55 inch)90W£0.024£44
Games console200W£0.054£59
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Ways to cut the cost of running a fridge freezer

  • Use it less at peak times if you are on a time-of-use tariff, and more when power is cheapest.
  • Choose a model with a high energy rating when you replace it. The saving over its life is often bigger than the price difference.
  • Switch it off at the wall when it is not in use if it has a standby draw.
  • Check your tariff. A lower unit rate cuts the cost of every appliance in the house.

Sources and further reading

Questions people ask

How much does it cost to run a fridge freezer?
About £0.011 an hour, £7.89 a month or £95 a year at 27p per kWh, using it around the clock (average power).
How much does a fridge freezer cost to run for 24 hours?
Running a 40W fridge freezer for 24 hours straight would use 0.96 kWh and cost about £0.26 at 27p per kWh.
How many watts does a fridge freezer use?
A typical fridge freezer uses about 40 watts. The exact figure is on the label or in the manual.
What electricity price should I use?
The Ofgem price cap sets the maximum unit rate for most standard variable tariffs and changes every three months. Use the p/kWh figure on your own bill.

Results are estimates for information only, not financial advice. Read the full disclaimer.

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