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Len Penzo dot Com

The offbeat personal finance blog for responsible people.

Approximate Energy Costs of Your Home Appliances

By Len Penzo

power linesOur homes today are loaded with more electronic media and electric appliances than ever before. According to data published by the Energy Information Administration (EIA), U.S. household electricity consumption is expected to grow about 29% from now through 2040. But while the added electrical loads continue to provide easier and more pleasant lives for us, it also brings higher and higher electricity bills.

The Anatomy of an Electricity Bill

A large portion of any electricity bill is usually attributable to central heating and air conditioning; I try to temper those costs by simply adjusting my programmable thermostat higher in the summer (78 degrees F) and lower (68 degrees F) in the winter. But what about other home appliances? How much do they contribute to the monthly bill?

To help you answer that question, I’ve put together a couple of simple spreadsheets that approximate hourly and monthly energy consumption of some common household appliances and electronics, as shown in the top and bottom figures, respectively. Simply pick an appliance and then look at the column that best represents your approximate electricity costs. In my case it is currently $0.16/kWhr.

PowerCostsDaily

Hourly power consumption costs. (Click to enlarge.)

Monthly power costs.

Monthly power consumption costs. (Click to enlarge.)

Keep in mind the energy figures are only gross approximations and, as a result, your experience may be different. You should also be aware that these cost approximations do not consider phantom power that many appliances draw when they are switched off. For the most part, these phantom loads only increase the appliance’s energy consumption by a few watt-hours, but extremely frugal folks can still squeeze additional savings from their electricity bill by unplugging these appliances or using a power strip to cut power to them when they are not in use.

Some Interesting Observations

A look at the figures reveal some interesting observations:

  • If you like to drink coffee all day long, your coffee maker could be costing you more in energy costs than your refrigerator! If your coffee maker is on for 8 hours per day then it is, as can be seen in the second figure.
  • Besides the coffee maker, other so-called “energy vampires” include medium and large aquariums, and portable space heaters. As the second figure shows, these items really can add to your monthly electricity bill.
  • I have six ceiling fans in my house running 24 hours a day. At 16 cents per kilowatt hour, those fans are costing me $34 per month. However, they are also saving me money by helping to reduce the amount of time my central air is running.
  • You may be happy to know that cutting back on your television and computer use will provide only minimal energy savings.

And Finally…

If you would like the actual Excel spreadsheet I created to make your own energy cost estimates, send me an e-mail and I will be more than happy to send it to you.

For more information on how to calculate energy consumption and tips on how to save energy, you can also check out this website sponsored by The United States Department of Energy.

Photo Credit: urawa

Related Posts:
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  • 19 Tips for Saving a Bundle of Money on Home Appliances19 Tips for Saving a Bundle of Money on Home Appliances
  • Is the Payback Period on Energy Efficient CFL Bulbs Too Long?Is the Payback Period on Energy Efficient CFL Bulbs Too Long?

21 Comments May 21, 2014

Comments

  1. 1

    Jon says

    April 20, 2011 at 8:48 pm

    i had no idea that the coffee maker uses so much electicity. I will not keep it on for so long any more. Good article

    Reply
  2. 2

    happy says

    April 20, 2011 at 8:48 pm

    I’m reading this post from my I-Phone and it looks great! I like your writing style and you make some excellent points about what does it cost to run my tv.

    Reply
  3. 3

    Bob L says

    April 20, 2011 at 8:48 pm

    Good article. Your coffee maker does not use it’s full watts continuously, it cycles on and off. Still, you can save a lot by putting your coffee in a thermos as soon as it is ready.

    Your TV may not use a lot of electricity, but if it has a remote (what one does not) then it has phantom loads which can add up. In fact, anything with a clock, remote, power light or whatever has phantom loads. So do things like your GFI outlets, automatic turn on lights, most things with a touch panel, and…. well, lots of things.

    These phantom loads can often add up to more than the daily usage. That is the case with my TV, AND my toaster. Dang toaster has a clock, which uses more electricity in a week than toasting bread (we don’t toast every day).

    Get a Kill-A-Watt meter and check everything out. You will be amazed what some thing use.

    Reply
    • 4

      David @ VapeHabitat says

      August 13, 2018 at 11:14 am

      That’s why I installed a 15 kW solar panel system for my house.

      Reply
  4. 5

    Discover Green Living says

    July 7, 2011 at 9:54 am

    The best thing to do when trying to save extra money is to cut back on your at home bills. To start with you can simply schedule your ac to only run when your home, having it cut off a few minutes after you leave and about 30 mins before you get home. The more creative you get the more money you save.

    Reply
  5. 6

    Danita Mentzer-McKay says

    March 19, 2012 at 4:42 am

    Please send me the energy guide (that you worked so hard on).
    Approximate Energy Costs of Your Home Appliances
    Thank you

    Reply
  6. 7

    Darnell says

    June 12, 2012 at 10:42 pm

    Please send me your excel appliances spreadsheet.

    Reply
  7. 8

    chris glass says

    October 31, 2013 at 1:40 pm

    I have to create an annual energy consumption for a domestic premises for my homework i would b grateful if you could send me your excel appliances spreadsheet. great work in creating this it will save my bacon.

    Reply
  8. 9

    Easy Kitchen says

    December 11, 2013 at 2:34 am

    i had no idea that the coffee maker uses so much electicity.

    Reply
  9. 10

    Mike Collins says

    May 21, 2014 at 9:36 am

    I’ve been thinking about buying an energy meter to see how much appliances use when in use and in standby mode, but this list is a helpful guide. Thanks for sharing. I’m surprised at how much energy a coffee pot uses. We tend to leave the Keurig on all day so it’s ready when we need a cup, but I think I should start turning it

    Reply
  10. 11

    Stefanie @ The Broke and Beautiful Life says

    May 22, 2014 at 1:05 pm

    In NYC, landlords control and pay for heating. I have an air conditioning unit for the summer which, even though I try to use it sparingly, makes my utility bill sky rocket.

    Reply
  11. 12

    Marcia @Frugal Healthy Simple says

    May 26, 2014 at 7:01 am

    this was very good stuff. I love reading the details. Wow, the coffee maker! I almost always only use mine on weekends for a couple of hours.

    Reply
  12. 13

    Henry Kras says

    May 26, 2014 at 7:57 am

    Len

    Would love to have a copy of the spreadsheet.

    Thanks,

    Reply
  13. 14

    Greg says

    May 29, 2014 at 7:42 am

    Just remember that ceiling fans cool people, not rooms. If they are running in uninhabited rooms they are using energy and actually contributing heat to the room in the form of waste heat from the motor. So this would be a double whammy against energy efficiency.

    And Kill-a-watt device is fairly cheap and can help you sniff out those devices that draw power when they’re not even on.

    Reply
  14. 15

    Samiam says

    June 4, 2014 at 1:12 pm

    Use a Coffee maker with a thermal carafe. Problem solved.

    Reply
  15. 16

    Mthokozisi Nyawose says

    July 8, 2015 at 5:31 pm

    Please email me a copy of the spreadsheet for estimating home power consumption.

    Regards

    Reply
  16. 17

    Louie says

    September 1, 2015 at 2:53 am

    Please send me the copy of excel

    Reply
  17. 18

    Stephanie says

    April 17, 2016 at 7:53 pm

    Thank you for sharing this, we really need to save energy these days not just to save money but also to help our environment suffering from Global warming. Please always make sure to plug off your unused appliances to avoid overused energy. If you want to buy home appliances , make sure to choose wisely, choose those energy saver home appliances.

    Reply
    • 19

      Len Penzo says

      April 17, 2016 at 9:27 pm

      Global warming is a sham, Stephanie.

      Reply
  18. 20

    Mercedes says

    October 13, 2017 at 12:07 am

    Hi to everybody! Len, it’s my first visit to your website and I just want to say that I LOVE IT!

    Reply

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