Yes, turning a microwave off (especially at the wall) saves electricity by eliminating standby power (vampire energy), which is the small amount of power used for its clock and controls, adding up over time to a small but noticeable energy drain and cost. While modern microwaves use less than older ones, completely cutting power by switching it off or unplugging it stops this consumption, contributing to lower bills and less wasted energy.
Heating and cooling (HVAC) typically runs up an electric bill the most, often accounting for around 40% of energy usage, followed by water heating, large appliances like refrigerators and clothes dryers, and lighting. The biggest energy drains are systems that change air temperature (furnaces, air conditioners) and appliances that heat water (showers, dishwashers) or run for extended periods (dryers, fridges).
On average, microwaves use about 600 to 1000 watts of electricity. Using a microwave for 15 minutes per day will use about 6.1 kilowatt-hours of electricity per month and 73 kilowatt-hours of electricity per year. A microwave costs an average of $0.86 to use for a month and $10.36 to use for a year.
Microwave capacitors can retain a charge for a long time, even after the microwave has been unplugged. It can be hours, days, or even longer. This is why it's important to discharge a microwave capacitor before attempting any repairs, as they can store a potentially lethal charge.
Electric heating systems and tumble dryers tend to be the most expensive electrical items to run because they use large amounts of power over extended periods. Other high-cost appliances include electric ovens and immersion heaters. Using these efficiently and during off-peak hours can help reduce costs.
Switching off your microwave after every use is another way you could make a saving. The Energy Saving Trust also said a microwave is one of the appliances that will "eat up electricity" when left on standby.
Let's break down the top energy-consuming appliances in most homes and what you can do to keep costs under control.
Crumbs inside can become a fire hazard over time. Unplug, empty and give it a quick shake out before you leave. Unless you're using it as a kitchen clock, there's no reason to leave your microwave plugged in. Save energy and reduce any risk of electrical faults.
Is switching off a socket the same as unplugging? The only method to ensure no electricity flows through an appliance is to turn it off at the socket and pull the plug out. However, because the socket switch could be broken, this method isn't always effective.
Choose energy-saving appliances
Switching up the appliances you use can have a big impact on your energy consumption. Microwaves, slow cookers, and air fryers all use less energy than a traditional oven, making them a great option for low-maintenance, low-cost, and low-carbon cooking.
The Cons of Microwave Cooking
The cold spots will not taste good, and the hot spots could result in burns to the mouth. If the food that is being microwaved does not have enough water content, there is a risk of it becoming too dry. Only microwave-safe utensils can be used in these ovens.
The most electricity is consumed by a fridge/freezer, electric range and dishwasher. This is mainly because they are used so much. The espresso maker uses 450 kWh annually, at one cup a day. For cooking purposes, an electric slow cooker, Instant Pot or microwave will use less energy than will an electric range.
Did you know that when your appliances or electronic devices are plugged in, they're draining energy – even if they're not in use? Phantom power, also called standby power, refers to the energy that's wasted around your home when devices are plugged in and using power, but you're not actively using them.
Microwaves, coffeemakers, toasters, and electric kettles often have clocks, digital displays, or sensors that remain active even when the appliances aren't being used. These features, while handy, drain energy continuously.
Heating and cooling (HVAC) typically runs up an electric bill the most, often accounting for around 40% of energy usage, followed by water heating, large appliances like refrigerators and clothes dryers, and lighting. The biggest energy drains are systems that change air temperature (furnaces, air conditioners) and appliances that heat water (showers, dishwashers) or run for extended periods (dryers, fridges).
Ranges and Stoves. With cooking as the most common cause of house fires in the US, ranges and stoves are at the top of the list for fire-starting appliances. These essential appliances can become hazards mainly due to unattended use.
If you neglect to turn on the exhaust fan, the moisture rising from pots and pans (think pasta) can collect on the electronics of the microwave and shorten its life span.
Space Heaters
Because their primary function is to create heat, space heaters should always be turned off as soon as you're done using them and unplugged as soon as possible. Even if they aren't actively running, leaving a space heater plugged into the wall can pose a fire risk, so it's best to play it safe.
1. Shower. Specifically electric showers have the highest consumption. To save on your showers, take shorter showers and avoid scalding temperatures.
Of course. While a single charger consumes very little power in standby mode (typically less than 0.5 watts), leaving it plugged in for extended periods, combined with multiple devices in your home, the total can add up to tens or even hundreds of dollars in wasted electricity each year.
Switch your kettle off at the wall when not in use
Does leaving a kettle plugged in use electricity? Yes. And while this won't add up to riches, making sure your kettle is turned off at the plug can help you save some pennies.
Heating and cooling (HVAC) typically runs up an electric bill the most, often accounting for around 40% of energy usage, followed by water heating, large appliances like refrigerators and clothes dryers, and lighting. The biggest energy drains are systems that change air temperature (furnaces, air conditioners) and appliances that heat water (showers, dishwashers) or run for extended periods (dryers, fridges).
Leave toaster ovens, coffee makers, food processors, blenders, air fryers, and stand mixers unplugged until it's time to use them. Leaving things like toaster ovens and air fryers unplugged also lowers the risk of fires.
Although the amount of standby power used by each device may be small, collectively, these devices can consume a significant amount of energy over time. By unplugging appliances like microwaves, game consoles, phone chargers, and TVs on standby, you can reduce this wasted energy and save money on your electricity bill.