Microwaves remain one of the most useful kitchen appliances in UK homes. From heating leftovers and ready meals to quickly preparing simple foods like baked beans or scrambled eggs, they save both time and effort.
However, like every electrical appliance, microwaves also add to household energy bills.
New calculations suggest that households using a microwave regularly could face an annual running cost of around £10.81 from April.
While this figure is not especially high compared with many other appliances, it still highlights the importance of understanding how everyday kitchen habits affect energy use.
The actual amount each household pays will vary depending on factors such as how often the microwave is used, the appliance’s wattage, and the electricity tariff in place. Still, for many people, the microwave remains one of the cheapest cooking options available.
How The £10.81 Cost Was Calculated
The estimated £10.81 yearly running cost is based on average usage and standard microwave power levels. Using the formula provided by Smart Money Tools, the calculation assumes that a microwave is used for around 42 minutes each week.
This average is based on using the microwave twice a day for three minutes at a time, seven days a week. It also assumes a 1,200-watt microwave, which is a common rating for many modern models.
Based on those assumptions, the running cost works out as follows:
- £10.81 per year
- £0.90 per month
- £0.03 per day
- £0.05 per ten minutes
These numbers offer a useful guide for households that want to better understand the everyday cost of running kitchen appliances.
Lower-Wattage Microwaves Cost Less to Run
Not all microwaves use the same amount of electricity. Some have a lower wattage, which can reduce the cost of running them.
For example, if a household uses an 800-watt microwave for the same amount of time, the annual cost drops to around £7.20. That makes a noticeable difference over the course of a year.
However, lower-powered microwaves may take longer to heat food properly. In practice, this could mean they need to run for extra minutes, which may reduce or even cancel out the savings. So while wattage is important, cooking time also plays a major role in the final cost.
Why Microwaves Are Still Cheaper Than Ovens
Energy experts continue to point out that microwaves are often a more cost-effective choice than conventional ovens.
According to Uswitch, microwaves focus energy directly on the food, making them one of the most efficient ways to cook or reheat meals. This is one reason why many cost-conscious households prefer to use microwaves whenever possible instead of turning on the oven.
Using the same energy assumptions and a similar amount of cooking time, the annual cost of using an oven comes out at around £18.91 per year. That is significantly higher than the estimated cost of running a microwave.
In reality, ovens usually cost even more because they often need extra time to preheat and tend to stay on much longer than microwaves. This makes microwaves a more attractive option for quick meals and reheating food.
Energy Price Changes From April
The timing of this calculation also matters because households are preparing for updated energy charges from April.
According to Ofgem, the new daily standing charge will be 57.21 pence per day on average across England, Scotland, and Wales, including VAT at 5 percent. This standing charge applies regardless of how much electricity a household actually uses.
At the same time, the government recently announced that funding for two environmental and social energy schemes will either end or be moved into general taxation from April 2026. Ofgem says energy customers are expected to save an average of £150 as a result.
These broader changes may help offset some household energy costs, but many families are still looking closely at the running costs of the appliances they use every day.
Why Usage Habits Matter
Although £10.81 per year may sound relatively small, the total cost can rise if a household uses the microwave much more than average.
Families who heat multiple meals a day, rely heavily on ready meals, or use the appliance for repeated reheating may pay noticeably more over a year.
That is why understanding usage patterns is important. Even small appliances can add up when used frequently, especially across a full year.
Still, compared with many alternatives, microwaves remain one of the more affordable kitchen appliances to run.
Conclusion
Households with microwaves could see annual running costs of about £10.81 from April, based on average use and a standard 1,200-watt appliance.
While the exact cost depends on usage habits and microwave wattage, the appliance remains one of the cheapest and most efficient ways to heat food.
For households trying to reduce electricity bills, the microwave continues to be a practical option, especially when compared with ovens.
As energy prices remain a key concern, keeping track of small daily costs can help families make smarter choices about how they use appliances at home.
FAQs
How much does it cost to run a microwave per year?
Based on average usage and a 1,200-watt microwave, the estimated yearly running cost is around £10.81.
Is a microwave cheaper to use than an oven?
Yes. A microwave is generally much cheaper to run than an oven because it uses energy more efficiently and heats food faster.
Does microwave wattage affect electricity costs?
Yes. Higher-wattage microwaves usually cost more to run, although lower-wattage models may take longer to heat food, which can reduce savings.