How can I determine how much energy my appliances are using?

  • Library Program  (Chatham-Kent): Chatham-Kent area residents can check out an Energy Meter from the Chatham-Kent Public Library and monitor energy consumption at home thanks to a partnership with Entegrus. Just plug the meter into an outlet and then plug the appliance (fridge, computer, window air conditioner, etc.) into the meter. The meter measures the instant energy increase or the average rate of energy use over time. Visit the Chatham-Kent Public Library website for more information. 

  • Estimate the Traditional Way: Find out how much energy your appliances use and how much that's costing you in four steps.
  1. Find the Appliance Wattage: The wattage is usually stamped on the bottom, back or nameplate of your appliance. If you can't find it, you can use a calculator to estimate. 
  2. Estimate Daily Killowatt Hours (kWh): (Wattage x Hours Used Per Day) ÷ 1000 = Daily kWh. 
  3. Estimate Annual kWh: Daily kWh x Days Used per Year = Annual kWh. 
  4. Estimate Annual Cost: Annual kWh x Rate per kWh = Annual Cost. 
  • Appliance Usage Chart: This chart shows how much electricity your appliances use and should help you manage your electricity more effectively. To find the appropriate cost for running appliances, use this formula (you'll refer to the current power rate) wattage x hours divide by 1000 = kWhrs used @ cost of power rate = total
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