Which appliances use the most electricity?
The average Irish household will have well over a dozen different appliances running every single day. But which ones cost the most to run and which aren't quite so dear? We decided to take a look.
How is electricity measured?
So one kilowatt hour is the amount of energy you’d use if you kept a 1 kilo watt/1,000 watt appliance running for one hour.
Electricity meters record each household’s consumption and are read by ESB Networks to determine exactly how much your bill will be.
Which appliances cost the most to run?
So, how can you keep your consumption – and bills – as low as possible?
Step one is knowing which appliances use the most electricity. Step two is being smart about when and how often you use them.
When you buy any appliance, its handbook will tell you how much energy it uses. The higher the kWh, the more it uses. So for example a 3 kWh appliance will use three times as much energy for every hour of usage as a 1 kWh device and five times as much energy as a 600 watt (0.6 kWh) device.
A good rule of thumb is: if it makes things hot, particularly in a short space of time, it costs a lot. Think kettles, hair dryers, tumble dryers and electric showers – they all have a ferocious appetite for electricity.
So let’s look at what running a few appliances over the course of a day could cost you.
Note - your actual costs will depend on the energy efficiency of the appliance you use. Most modern appliances (particularly washing machines, tumble dryers, dishwashers and TVs) are way more efficient than older models, but the rating will help you choose the most efficient model. The ratings, which are compulsory, range from A to G, with A being the most efficient.
|Activity||Energy||Hourly cost at €0.29 per kWh inc Vat*||Cost||Based on|
|Immersion||3 kWh||€0.87||€1.74||2 hours to fully heat 120-litre tank|
|Tumble dryer||3 kWh||€0.87||€0.87||One hour of drying|
|Electric shower||9.5 kWh||€2.75||€0.46||10-min shower|
|Dishwasher||0.8 kWh||€0.23||€0.46||A two-hour cycle|
|Washing machine||0.8 kWh||€0.23||€0.46||A two-hour cycle|
|Iron||2.5 kWh||€0.73||€0.36||Half hour of ironing|
|Desktop computer||0.2 kWh||€0.04||€0.33**||8 hours of use|
|Cooking (induction)||2 kWh||€0.58||€0.29||Half hour of cooking|
|Fridge/freezer||0.18 kWh/350kWh annual||€0.01||€0.28||One day of usage|
|TV||0.2 kWh||€0.06||€0.23||4 hours of use|
|Laptop||0.1 kWh||€0.02||€0.16**||8 hours of use|
|Kettle||2.5 kWh||€0.73||€0.12||10 mins of boiling|
|Lightbulb 60 Watt||0.06 kWh||€0.02||€0.10||6 hours of light|
|Hair dryer||2 kWh||€0.58||€0.10||10 mins of use|
|Vacuum cleaner||0.7 kWh||€0.20||€0.07||20 mins of hoovering|
|Router||0.01 kWh||Less than one cent||€0.07||One day's use|
|Microwave||0.8 kWh||€0.23||€0.04||10 mins of use|
|Toaster||1.5 kWh||€0.44||€0.04||5 mins of use|
|A Nespresso||0.9 kWh||€0.26||€0.03||5 mins of use|
|Daily standing charge||€0.78||One day|
|PSO levy||€0.16||One day|
*based on Electric Ireland's standard 24-hour urban rate. Rounding has been applied to all figures.
**A 30% reduction has been applied. The wattage figure quoted refers to the maximum amount of energy the device can possible consume when everthing is running (printer, modem, hard drive etc). In reality computers and laptops will spend some of their time in standby mode or only using some of their components.
You're unlikely to use all of the above appliances every day, and according to average usage, smaller homes in particular won't.
But as you can see, at current standard rates, a few basic tasks around the home could quickly add up to around €7 a day - or around €220 a month - and that's before you've even turned on the heat!
You can also see how expensive heating water is. So make sure you have a good lagging jacket for your tank and don't leave hot taps running as you're literally pouring money down the drain!
Turn it off
There's a misconception among many Irish people that turning on and off appliances regularly uses excess electricity and that it may be better to keep appliances on for most of the time.
This is wrong - especially when it comes to newer and more modern devices.
If you're leaving the room, even if only for a few minutes, you'll save money by turning off the lights, the TV or the portable heater etc.
The same rule applies to the immersion. Only keep it on for when you need hot water. Don't leave it on 24/7 - as it'll just increase your bill.
How can I monitor my electricity usage?
We know that you’re not going to count every minute of usage for every electrical appliance in your house.
Thankfully, you can get electricity monitors to do this for you. One of which is the Owl electricity monitor, which will cost you about €50 and, if used correctly, will pay for itself in no time.
Also, if you have a smart meter and sign up to a smart electricity tariff, your supplier should be able to provide you with lots of up-to-the-minute info on your usage.
How can I use less energy?
Being energy efficient is both good for the environment as well as your pocket. With that in mind, here's a list of 15 easy ways to reduce your electricity consumption, lower your bills, and do your bit for the planet.
And if you're looking to save even more money while continuing to reduce your impact on the environment, follow these 12 easy tips to use less water and save money and check out this great list of ways to reduce your carbon footprint, while saving on your everyday expenses.
However, the best way to save on your electricity bills is to switch to a cheaper supplier...
Switch and save
All suppliers offer big discounts of up to 40% for an entire year to those who switch.
So switching to a new provider is a great way to cut down on your electricity costs.
You can learn about what you need to switch energy suppliers in this guide.