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Understanding Your Energy Usage

Calculate your power consumption

Written by Caitlin Ritchie

Edited by Jamie Cesanek

Last updated 09/18/2023

Hirurg/E+/Getty images

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Key Points

  • The amount of energy you use directly impacts your monthly electricity bill.
  • You can estimate your monthly energy usage using the formulas listed on this page.
  • Understanding and lowering your usage can help you save on energy bills.
Coffee Maker900-1200 watts
Toaster 800-1400 watts
Iron100-1800 watts
Ceiling fan 65-175 watts
Space heater (40gal) 4500-5500 watts
Hair dryer1200-1875 watts
Laptop 50 watts
Computer monitor 150 watts
Computer tower 120 watts
Television 19"-36" 65-133 watts
Television 53"-61" 170 watts
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