how much electricity

If you’re keen to cut back your electricity consumption, your refrigerator may be a good place to start. Reducing how much energy is consumed by refrigerators is easy with a few, simple habit changes.
In addition to cost savings, awareness of your refrigerator’s electricity usage also helps reduce your carbon footprint – a win for you and the environment.
In this guide, AEG will help you understand how much electricity a refrigerator uses per month, while providing easy-to-follow advice to optimise fridge energy efficiency.

What are the factors that affect the energy consumption of a refrigerator?

The model of your refrigerator

Generally, refrigerators with side-mounted or bottom-mounted freezers use more energy than fridges with a top-mounted freezer. Features such as ice makers and dispensers can also require additional energy to operate.

The refrigerator size

Large refrigerators, such as side-by-side models, consume more energy as they are cooling a larger volume of space.

the ref size

Where you place your refrigerator

Ensure your refrigerator is installed in a cool, well-ventilated area, to prevent overheating, and increased energy usage.


Did you know your refrigerator can consume more energy in the summer than winter? This is because higher ambient temperatures make the compressor work harder to maintain cool fridge contents.

Your usage

Frequent or prolonged door opening can place added pressure on the compressor because it lets more warm air in when you open the door. This means your fridge and freezer will need to use extra energy to replace the cold air that flows out every time the door is opened.

The condition of your refrigerator

Most older refrigerator models won’t be equipped with energy optimising technology. Some can also have worn out parts, such as loose rubber gaskets, that let cold air seep out. This can lead to temperature fluctuations and cause the compressor to use up more energy.

How much electricity does a refrigerator use per month

To calculate the electricity consumption of your refrigerator, there’s some simple maths involved. Please note that this is an estimate to give you an indication of your consumption.

Step #1: Know your refrigerator wattage

Check the energy information sticker located on or inside your refrigerator and note its voltage and amperage. Multiply the two to get the wattage. See the example below:

voltage x amperage = wattage
117 V x 3.3 amps = 386.1 watts

Step #2: Know your refrigerator’s running wattage per month

A refrigerator cycles on and off throughout the day, so your running wattage is actually lower compared with your refrigerator wattage. To roughly calculate this, divide the wattage by three.

wattage / 3 = running wattage
386.1 watts / 3 = 128.7 watts

To know how much energy it consumes in a day, simply multiply the running wattage by 24 hours.

running wattage x 24 hours = running wattage per day
128.7 x 24 hours = 3,088.8 watts

Multiply this value by 30 days to know how much electricity your refrigerator uses per month.

running wattage per day x 30 days = running wattage per month
3,088.8 watts x 30 days = 92,664 watts

Step #3: Calculate your refrigerator’s electricity cost per month

Electricity providers charge electricity per kilowatt-hour. Convert watts to kilowatt-hour.

 running wattage per month / 1,000 = kilowatt-hours
92,664 / 1,000 = 92.66 kWh

Multiply this by how much your provider charges per kilowatt-hour. This can be found in your electricity bill.

kWh x cost per kWh = cost per month
92.66 x R2.558 per kWh1= R237.02 per month

Using this example, the table below is the estimated electricity consumption of your refrigerator per time period.

Time period

kWh of electricity consumed

1 hour

0.13 kWh

1 day

3.09 kWh

1 week

21.63 kWh

1 month

92.7 kWh

1 year

1,112.4 kWh

5 energy saving tips for your refrigerator

1. Set to the right temperature

The ideal temperature for your fridge is 4-5°C. For your freezer, it’s -18°C. Too high and it can compromise food safety and too low risks excessive energy consumption.

2. Installation in the right location

Place your fridge in a cool area, away from direct sunlight and other heat sources such as your oven or hob, and in a spot with sufficient ventilation. If it’s built in, follow the recommended distance away from the wall.

3. Maintain regularly

Just 2mm of ice can mean that your freezer consumes 10% more energy, so defrost frequently. Don’t let your fridge contents exceed its capacity. Every three months, scan your fridge shelves and discard expired food. While your clearing contents, why not dust the radiator and inspect the door seals, too.

Here are more tips for you on how to store and organize food in the fridge correctly so that you can easily maintain and clean your fridge.

4. Cool food before refrigerating

Placing hot food directly in the fridge can alter the internal temperature. So wait for cooked food to cool in order to maintain a constant temperature inside the refrigerator, saving energy.

5. Be mindful of door opening frequency

Before opening your fridge, have a mental checklist of the items you need to minimise the time the door is open. Encourage family members to refrain from aimlessly checking refrigerator contents!

Read more tips on how to use your home appliances effectively from our experts here:

The AEG 8000 Series Refrigerator helps you save electricity


1. Free up your freezer

To give your compressor a break, why not store some fresh meat and fish in your fridge instead of the freezer? In the AEG 8000 Series, it is now possible to store them in a special FreshZone compartment, which can keep them fresh and tender for up to seven days2.

2. Cool innovations

The AEG 8000 Series Refrigerator is equipped with advanced features to optimise energy efficiency while retaining food freshness and nutrients, such as the GreenZonePlus Blue Seal crisper.

3. A clean, hygienic fridge

Enjoy the peace of mind of bacteria-free food storage. The Ionising deodoriser eliminates up to 99.9% of bacteria3, reducing premature produce spoilage, and ensuring a fresh refrigerator interior.

4. Temperature retained; energy saved

Cooling 360 evenly distributes cold air, precisely stabilising the temperature, even with frequent door opening.

The easiest way to save on energy

How much electricity your refrigerator consumes per month greatly depends on how it’s used. Don’t tire it out and avoid anything that will cause the internal temperature to fluctuate. Don’t just focus on your refrigerator; also, be more mindful of how you use other energy-intensive appliances such as your tumble dryer, or electric water heater.

However, the ideal option is to own a refrigerator designed with energy usage in mind. The AEG 8000 Series Refrigerator is equipped with advanced technologies that utilise energy in the most efficient way possible – without compromising on exceptional performance. Why settle for less when you can save more.

1 This value was used for visualisation purposes only. This shall ultimately depend on your electricity provider.
2 Test by Interrek Thailand laboratory on EQE5657BA at -2°C fresh beef after 3 days storage.
3 Tests by Intertek Italy for microbial inactivation efficacy on different microorganisms: (Staphylococcus aureus ATTC 25923, Escherichia coli ATTC 8739, Bacillus subtilis ATTC 6633, Listeria monocytogenes ATTC 13932) in controlled conditions (45L plexiglass box, temperature 3°C,relative humidity 60-70%, treatment time 4 hours).

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