Most refrigerators also come with a built-in freezer for freezing food. Modern refrigerators are very energy efficient compared to older models from a few decades ago. A fridge will use anywhere from 100 to 400 watts depending on size, a large fridge will use about 180 watts or 1575 kWh annually.
This calculator does not account for compressor cycles and other factors which can drastically increase or decrease power usage. You will need to know an average running wattage of your fridge to get an accurate result, if you input the rated wattage you will get a highly inflated result. One way to determine the actual running wattage is to find the daily or annual kWh rating and use that as the baseline for your calculation. For example if the annual kWh rating is 875 kWh, divided by 365 days will give you about 2.4 kWh per day, which means the average wattage (accounting for all factors) is about 100 watts.
See the energy consumption of a refrigerator using 180 Watts for 24 hours a day @ £0.19 per kWh.
Cost Per Hour: £0.0342
Cost Per Day: £0.8208
Cost Per Month: £24.97
Cost Per Year: £299.62
kWh Per Day: 4.32
Tip: If you are using an old fridge we highly recommend you upgrade to a more efficient modern model, advances in the past 15-20 years have reduced the energy use of refrigeration. If your refrigerator has been purchased in the last 10 years then buying a new one may not give you a significant improvement. Do not overfill or under fill a fridge. Aim for about 75% capacity.