Have you ever wondered how much it costs to leave your computer running 24 hours a day? Or how much it costs to run your dryer or any other electrical device. Well, now you can thanks to some very simple step by step instructions from smallnotebook.org. Below is a copy of the calculation chart that he has posted.
How to find the cost of electricity for my laptop:
1. Start with the number next to the letter A or Amps on the label. 4.26A 2. In the US, multiply by 120 for appliances that you plug into the wall (except use 240 for dryers).
Outside of the US, find your voltage here.x 120 3. Divide by 1000. / 1000 4. Multiply by the number of hours (I’ll use one hour to keep it simple). x 24 5. Multiply by the average kWh price on your electric bill. x 0.15 This is the cost to run your appliance for that amount of time: = 1.995
If leave my work laptop plugged in for 24 hours and using the above formula it cost my company $1.99. My laptop uses 4.62A and I don’t know the cost a kWh so I assumed the $.15 that the author uses. That doesn’t sound like to much except it costs $726 a year too leave my laptop running, assuming I never take it home. If I do then I would start to incur that cost. After doing these calculation I will be sure to start shutting down my computers and other devices when they are not in use. Did you calculate the cost of your appliances? If so, please share.
Now to find the cost of electricity for my laptop:
| 1. Start with the number next to the letter A or Amps on the label. | 1.5 |
| 2. In the US, multiply by 120 for appliances that you plug into the wall (except use 240 for dryers). Outside of the US, find your voltage here. |
x 120 |
| 3. Divide by 1000. | / 1000 |
| 4. Multiply by the number of hours (I’ll use one hour to keep it simple). | x 1 |
| 5. Multiply by the average kWh price on your electric bill. | x 0.15 |
| This is the cost to run your appliance for that amount of time: | = .027 |
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