Do you ever wonder which appliances in your home use the most energy? Or how much it actually costs to run that heater? It’s easy to work out using this formula:
- Determine how many watts of power the appliance consumes. For example, take a typical pool pump, which operates at 1100 watts (or 1.1kw)
- Work out your current rate per KW hour which you can find on your electricity bill. For example in Perth it’s 0.2083 cents (A1 tariff)
- Now you can figure out your hourly cost of running your appliance by using this formula:
Watts/1000 x your current rate per KW hour on your electricity bill = hourly cost of running your appliance
For example: 1100 watts/1000 x 0.2083 cents = 23 cents per hour. In the summer months, when the pool pump is running 7 to 8 hours a day, it equals around $100 on a 60-day electricity bill.
So using this formula can help you to identify power hungry appliances which you then can consider replacing with more energy efficient products.