Estimating Electric Energy Use for the Home or Business

If you would really like to know your home power consumption:

1. Grab a piece of paper and a pen
2. Go from outlet to outlet and check the number of watts each appliance uses, writing them down on the piece of paper as if they were in a table with five colums. (Appliance Name, Wattage, Hours, kWh)
(1 kilowatt (kW) = 1,000 Watts)
3. Now input a guess for the number of Hours each appliance is used.
4. Multiply the Wattage by the Hours Used Divided by 1000 to get the Kilowatt Hour Consumption
(Wattage × Hours Used Per Day ÷ 1000 = Daily Kilowatt-hour (kWh) consumption
5. Multiply the Kilowatt Hour Consumption by the Price (cents) per Kilowatt Hour
( kWh ×  cents/kWh)

Window fan:
(200 Watts × 4 hours/day × 120 days/year) ÷ 1000
= 96 kWh × 8.5 cents/kWh
= $8.16/year

Personal Computer and Monitor:
(120 + 150 Watts × 4 hours/day × 365 days/year) ÷ 1000
= 394 kWh × 8.5 cents/kWh
= $33.51/year

Make sure to improve efficiency by using sustainable agriculture, renewable energy, efficiency devices, solar, wind, hydro, and green home cleaning. Take public transport and use your bicycle. Go through life happy and bless others as you walk this planet, practice a life of sustainability and improve on what others give you. Feed a man

1 comment:

  1. Just came across your blog. It just so happens that my company, Wise Energy Online (, located here in Melbourne, has created a whole house energy monitoring system that really will tell you how much power you're using, in realtime. And it will give you the details on your major appliances as well.

    Would love to talk with you further. Drop me line if you're interested.



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