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July 16, 2022
Energy Efficiency & Saving Tips
Reviewed By Alfred Poindexter

Tracking your appliance energy usage is key to reducing your overall energy usage. If you find that your bills are drastically higher than your estimated costs, it could be that your energy provider is tacking on far more fees than you realized, meaning it’s probably time to shop for a new provider.

Another issue you might discover is that you’re using more electricity than you thought. Even though you may have started taking steps to become more energy-efficient, your home is still gobbling up power. However, using only the knowledge of your whole home electricity usage, you may not be able to pinpoint the problem’s source(s). Instead, why not try monitoring the energy usage of specific appliances?

Why you should monitor appliance energy usage in your home

Knowing your home energy usage provides some significant benefits:

  • It allows you to estimate your monthly power consumption.
  • You can estimate the approximate cost of your average home electricity usage — although this is more difficult with a variable-rate plan.
  • You avoid unpleasant surprises when your power bill arrives.

However, as mentioned above, monitoring your whole-home energy usage won’t help you identify specific issues. That’s where tracking individual appliances comes in. With this information, you’ll be able to:

  • See how much electricity each appliance pulls.
  • Determine if it’s time to replace an appliance.
  • Reduce your energy consumption and your electricity bills.

The best way to track energy usage of household appliances

Now let’s look at how to track how much electricity your household appliances use.

Estimate the number of hours a single appliance is running

Before calculating an appliance’s daily, monthly, or even annual electrical use, you first need to know how long it runs every day. One way to do this is by roughly estimating how many hours it runs. For instance, you know you watch television or use your home computer for a set number of hours every day. Your refrigerator might be a bit trickier — it’s always “on” — but generally, most fridges run for up to eight hours daily.

Your other option for estimating an appliance’s daily energy use is to keep a log. Every time you use your microwave, oven, or gaming console, write down how long it ran. While more tedious, this method may provide more accurate calculations.

Determine the maximum wattage of the appliance

One of the easiest ways to determine the maximum wattage of a given appliance is to check the appliance itself — usually found on a sticker on the appliance’s backside or bottom. You may also find the information in the owner’s manual.

Instead of a maximum wattage, some manufacturers use amperes (amps) to display an appliance’s electrical current draw. To estimate the wattage of a given device, multiply its amps by the voltage it uses. Most small appliances use 120 volts, while larger ones (like a central air conditioner, stove, and level 2 EV charger) use 240 volts.

If you can’t find either number, you can also check online by looking up your specific appliance.

Calculate daily energy consumption

After gathering the above data for the appliance(s) you want to monitor, it’s time to start calculating. Here’s how to measure electricity usage by an appliance:

(Wattage X hours per day used) / 1000

The result will tell you how many kilowatt-hours an appliance uses daily. Suppose your work laptop uses 65 watts, and you use it for eight hours a day. Your calculation would look like this:

(65W X 8 hours) / 1000 

(520) / 1000 = 0.52 kilowatt-hours/day

If you want to find the cost of using your laptop — or any other appliance in your home — you would then multiply the kilowatt-hours by your electricity rate. For instance, if you’re on a fixed-rate plan with a $0.12 rate, your device would cost about $0.06 per day.

Calculate annual energy consumption

To project an appliance’s annual electricity consumption, use this formula:

Daily kilowatt-hour use X the number of days per year used

Using the same example from above, let’s say you work Monday through Friday. In general, there are about 260 workdays in a year. If you get — and use — two weeks of vacation time, that’s 250 days that you use your laptop. Here’s how to calculate its annual energy consumption:

0.52 kilowatt-hours per day X 250 days = 130 kilowatt-hours/year

Again, if you want to calculate the cost, multiply your annual consumption by your electricity rate. In this case, your laptop would cost $15.60 per year to run.

Electrical appliances in your home to monitor

In general, you can monitor any appliances that you want. However, this can be a tedious process. You could invest in an electricity usage monitor to make the process easier. Whole-home monitors typically attach to your electrical panel. While most only track the energy consumption of your entire house, some allow for individual device monitoring. However, they may not track your smaller devices.

A better alternative for individual appliance monitoring would be an energy monitor plug. You plug it into your wall outlet and plug the device you want to check into it. While their features vary, some energy monitor plugs will calculate a device’s daily, weekly, and yearly energy usage and its cost to use.

Whether you track your appliances manually or with an energy monitor, here are a few of the ones you should keep a close eye on.

Air conditioner

Of all of a home’s appliances, the central air conditioning unit tends to use the most electricity. Tracking its usage and making adjustments to make your home more energy-efficient allows you to see the effectiveness of your efforts. At the same time, it can help you identify issues if your consumption suddenly starts increasing. Addressing those issues right away can help you avoid unnecessarily high energy bills and the need to replace your air conditioner before it’s time.

Electric toaster ovens

A toaster oven is more space- and energy-efficient than a conventional oven. Tracking its usage can show you just how much less energy it pulls. However, it does use more than other smaller kitchen appliances, like a standard toaster or coffee maker. Like many other smaller kitchen appliances, it also draws phantom energy. Unplugging it when you aren’t using it can help you estimate its usage and cost more accurately.

Washers and dryers

Washers and dryers pull quite a bit of energy, especially when you use hot water and high heat. Monitoring their use can help you determine how efficient they are and if you should swap them out for newer, more efficient models.

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Monitor your electricity usage for optimal efficiency

Don’t let your appliances get the best of you. Knowing how to monitor electricity usage in the home by appliance can help you better understand your energy consumption habits, estimate your energy costs, and take steps to lower both. It can help you decide if you should replace specific devices with more energy-efficient models. In some cases, it can even help you determine if it’s time for a new energy plan.

If your current energy plan costs you more than you thought, Power Wizard is here to help. With us, you can compare dozens of electricity plans and companies in one place and choose the plan that fits your needs within minutes.

Are you ready to get started? Visit Power Wizard today!

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