Watts News
 Published for the members of North Itasca Electric Cooperative
VOL. 22 NO. 6  -  June 2019

Energy efficiency starts with knowledge


There are appliances that do not have settings to adjust the amount of work performed such as media equipment, non-variable speed motors, heat tape, etc. Televisions are another example of this. Newer LED televisions are now as low as 91 watts per hour.

How does one know the amount of energy an appliance consumes? All appliances have what is called plaque cards. This plaque card shows the amount of energy it consumes. When you find the wattage listed on it, this tells you how many watts per hour (every 60 minutes) consumed. But you only used your new 91 watt LED television for 40 minutes. Simple math: 91 watts divided by 60 times 40 minutes = 60.6 watts.

Finding the amount of energy consumed may be good, but I want to know what it is costing me in dollars and cents.

Electrical energy is billed in kWh (kilo-watt-hours). With kilo meaning 1000, watts (consumption) and hour (60 minutes), you can work out the cost of operating your new 91 watt LED television set by the above calculations of 60.6 watts by dividing it by 1000 to equal kWh during that 40 minutes of use. (60.6 divided by 1000 = .06 kWh). With North Itasca Electricís General Service Rate of 12.49 cents per kWh, the cost to operate your new television set for 40 minutes is (.06 watts x12.49 = 0.7 cents). In doing the same math, you can figure out the cost of operation of your electric space heater for 40 minutes this past winter when set on its highest setting of 1500 watts, the cost of operation equates to 12.49 cents.

I hope this helps you to understand energy consumption a little better and can apply it to those energy questions you may have. I am also here to help you ... donít be shy in giving me a call when you have questions!

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