Around 3% of the average home’s energy use comes from cooking. And with energy bills still high, it’s worth thinking about what appliances you use when you cook your meals.
So whether you use an air fryer or an oven, we’re here to help you save energy and money in your kitchen. Here is our energy experts’ findings on how much it costs to use some common cooking appliances.*
Air fryer vs oven
So, which is cheaper to run: an air fryer or an oven?
When cooking the exact same meal, air fryers are cheaper to run. But which appliance you need depends on how much you’re cooking. Choosing the right appliance and help you avoid wasting energy and help you save money.
Air fryer: best for one to two people
Typical cost to cook a 600g chicken breast: £0.14 in Great Britain (GB) and £0.21 in Northern Ireland (NI).
An air fryer works like a small conventional fan oven. Because they’re small, air fryers are often cheaper to run than an oven for the same meal.
In this example, it would cost £0.20 in GB and £0.29 in NI to cook the same portion of chicken in an electric oven. This makes the air fryer an ideal choice for preparing smaller amounts of food for one or two people.
Top tip: Try not to open the compartment any more than necessary to avoid letting out heat and wasting energy.
Electric ovens: best for batch cooking
Typical cost to cook a 600g chicken breast: £0.20 in GB and £0.29 in NI.
Ovens are generally bigger than other cooking appliances, so they use more energy to heat up. This means a typical electric oven can be the most expensive cooking appliance to run for individual portions of food.
However, their larger size means you can fit a lot of food in at once. This makes an electric oven better for batch cooking or cooking for a large group. Using your oven in these situations could be the best value for money.
Top tip: Avoid opening the oven door any more than necessary while the oven is on to keep hot air inside and reduce wasted energy.
How much does it cost to cook using a microwave or other methods?
Microwave: best for reheating and quick cooking
Typical cost to cook a 400g ready-made lasagne: £0.04 in GB and £0.05 in NI.
Instead of heating the air around it, your microwave directly heats the food. This means your microwave will cook and reheat food quickly, so its cost per use is likely to be lower than many other cooking appliances.
Top tip: Batch cooking in a full oven and then reheating portions as you need them in the microwave can help keep your energy bills down. Batch cooking is a popular tip: our Facebook audience are big fans!
Gas or electric hob: best for quick meals
Typical cost per use: £0.11 – £0.26 in GB and £0.16 – £0.18 in NI.
Using the hob is typically quite cheap. Generally, you won’t need to have a hob on for long to prepare meals such as pasta or an omelette.
Using a gas hob does produce more direct CO2 emissions than an electric hob, though. So if you’re just using it to reheat food, consider using a microwave instead.
Top tip: Cover your pots and pans with a lid when you’re cooking to keep heat in and reduce wasted energy. This also helps manage condensation in your home.
Slow cooker: best for busy schedules
Typical cost to cook 3.6kg home-made beef stew: £0.34 in GB and £0.50 in NI.
Slow cookers are designed to cook food gradually over a long period of time. This makes them a convenient way to cook if you have a busy schedule.
They’re also a great way to make several meals’ worth of food in one go.
Top tip: To save energy, avoid leaving them on longer than necessary. If you’re going to be out for longer, use the ‘low’ setting.
Is it cheaper to boil water in the kettle before adding it to the pan?
This depends on whether your hob is powered by gas or electricity.
If you have an electric hob, you’ll save energy and money by boiling the water in the kettle first.
If you have a gas hob, you’ll use less energy but you won’t save money. This is because the unit cost of electricity is higher than gas.
Quick energy-saving tips when cooking
Boil potatoes on the hob before roasting them to reduce the time they need to cook in the oven.
Fully defrost frozen leftovers in the fridge before reheating in the microwave. This uses less energy compared to cooking from frozen.
If you’re able, switch off your air fryer, slow cooker, microwave and electric oven at the plug.
If you want to heat food quickly, consider using a pressure cooker to cut down on cooking times.
*Appliances’ cost per use is calculated using lab testing for specific foods.
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