Kilowatt-hour
What is a kilowatt-hour?
Electricity is measured in kilowatt-hours. A kilowatt-hour is calculated by multiplying the wattage of a product by the number of hours it is in use.
For example:
- A 100-watt light bulb X 10 hours of use = 1000 watt hours, or 1 kWh
- You'll also use approximately 1 kWh of energy by running a hot shower for three minutes.
Saving 50 kWh is enough to run your dishwasher 20 times; saving 100 kWh could run your clothes washer 50 times – that's almost a free load of laundry every week for a year!
Revised:2010-03-01| Revised by: Peterborough Utilities Group Login