The average slow cooker in the UK uses 0.64 kWh of electricity on low settings and 1.65 kWh on high settings.
These numbers are based on six sources, from which we calculated the averages.
According to the Department for Business, Energy & Industrial Strategy (BEIS), energy cost an average of 17.2p/kWh in the UK in 2020. This means that the average slow cooker would cost from 11 to 28p to run per hour.
Factors That Affect the Electricity Usage of Slow Cookers
There are a few factors that affect the average electricity usage of slow cookers in the UK.
Length of usage per day
The number of hours a slow cooker is used for contributes to the total amount of electricity it will use. The longer you have your slow cooker on, the more electricity it will use.
Size of the slow cooker
Slow cookers come in different sizes. The size of the slow cooker also contributes to its average electricity usage, with smaller slow cookers using less electricity.
Type of dish cooked
Different recipes require different settings. For recipes which are to be cooked with a very low the slow cooker can be set to as low as 60°C (140°F). This will use less electricity than a dish that needs to be cooked at a higher setting, say 149°C (300°F).
6 Sources for the Average Electricity Usage of Slow Cookers in the UK
We looked at six different websites to try to determine the average electricity usage of slow cookers in the UK. They all give slightly different estimates of slow cooker energy usage, so we collected the data from all of them as well as looked at individual product specifications to create our estimate.
Here are the sources we used.
1. Low Cost Living UK
According to Low Cost Living UK, a blog focusing on frugality and self-sufficiency, a 200 watt slow cooker which runs for 8 hours a day will generate an average electricity usage of 1.6Kw hours.
NimbleFins, an insurance and budgeting website from the UK, say that a slow cooker on low settings of 70 watts uses 0.42kWh, while a slow cooker on high settings of 250 watts uses 1.50kWh based on a six-hour typical daily usage.
According to nPower, a British energy company, the average 3.5 litre slow cooker uses about 1.3kWh of electricity for eight hours of cooking.
4. The Diary of A Frugal Family
A blog post from The Diary of A Frugal Family states that using your slow cooker for over an eight hour period will use around 0.7kWh of electricity.
5. The Centre for Sustainable Energy
The Centre for Sustainable Energy estimates that average electricity usage of an electric oven is between 2-2.2kWh, while a microwave uses between 0.6-1.5kWh. On the other hand, a slow cooker uses approximately 0.7kWh for eight hours of usage.
6. The Telegraph
An article published by The Telegraph states that the electricity usage of slow cookers range between 75 and 150 watts on low settings and between 150 and 210 watts on high settings. That’s the same amount of energy used by a standard light bulb at our homes. The data is from CrockPot, a slow cooker manufacturer.