Morrissette Electric, Inc.
Full service electrical contractor

How to Read Your Power Bill, Part II

How to Read Your Power Bill

How to Read Your Power Bill, Part II

Last month I wrote about how confusing your power bill is to read and what you can do about it. This month, I am going to provide you the formula we use to calculate energy cost. It is real simple and I urge you to play with these numbers so you can see how much wasted electricity is costing you.

The formula is as follows for yearly consumption:

# of watts x number of use hours x your kw (kilowatt) rate

As an example, let's say you have a 100-watt light in a hallway that you leave on all the time. This would be 24 hours a day x 365 days. We can now complete the formula:

100 watts x 9125 (24 x 365) x .096 (current OUC charges) = $87.60

As you can see when you divide the numbers, this light bulb is costing you $87.60/year. However, when you add up the "misc. charges" on your bill with taxes, it is actually costing you up to 25% more or about $109.50 per year. Yes, you read this correctly, up to 25%!!!

As my trustee assistant was typing this article, she was wondering how much her clothes dryer is costing her to run with two teenagers and a husband (all untrained in the art of laundry). We did the numbers, and now she knows that 1/3 of her power bill comes from drying clothes.

If you have any more questions or comments, you can email me at, or call our office at (407) 897-2229, x15.

© 2008 Jean Morrissette