How is Consumption of Electric Energy Measured

28 Aug


The consumption of electric energy by electronic devices is measured in Watt hours (Wh), so 1 Wh (watt hour) of electric energy consumed means that an electronic device uses constantly 1 watt of energy for an hour. For your electric bill however you are paying in kilowatt hour (kWh) for energy usage as it is more convenient to use a higher value since the normal energy usage of a typical household is usually in the range of a few kWh.

1 kWh is equal to 1000 Wh

So depending on where in the world you are living you will be paying a certain amount of money for each kWh of energy that you consume. For example we are going to use a value of let us say $0.15 USD per kWh. So to see what your electric bill could end up for the month if your average hourly power usage is 2 kWh you can do a simple calculation like that:

average hourly power usage in kWh * 24 hours in a day * 30 days in a month * price of kWh

If we use the above example and take 3 kWh as an example for an average power usage of 3 killowatt hour we are going to end up with the following result:

3 * 24 * 30 * 0.15 = $324 USD

In the above example we would have used 2160 kWh of electric energy for the month, a number that is pretty high for an average household, but we just made an example. Normally you wend up with lower power usage during the night and the average hourly power usage is usually lower, so the above example was just to give you an idea on how to calculate power usage. Do note that the above calculation takes an average price per kWh of energy, but usually electric bills are more complex and the price per kWh listed there may not reflect what you actually end up paying when you add up some other expenses such as extra green energy fees or power distribution fees etc. (can vary from country to country). The idea with this example is to give you a rough idea on how your consumption of electric energy relates to the electric bill you get at the end of the month.

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August 23rd, 2017 at 10:02

Electricity is measured in units of power called Watts, named to honor James Watt, the inventor of the steam engine.



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