Anything that is plugged in and can be turned on uses electricity. During the process of discovering your electricity usage, we break your home down into bite size pieces to calculate exactly how much energy you need to go off the grid. Have a look at the detail on how to calculate energy consumption below, or if detail isn’t for you, you may want to look at how you use electricity in your home.
Calculating Your Energy Consumption
Your total energy consumption depends on what you use in your house. (It helps to understand the difference between power and energy before you read on.) But it is easier to think about 1 appliance to start with. The energy consumption of an appliance depends on 2 things:
- Power Rating – of the appliance that you are using
- Time – the amount of time that you run the appliance for
Energy Consumption = Power Rating x Time
The easiest way to remember this is to work backwards. If you have a light with a power rating of 5W but the light is off (run time = 0 seconds), your energy consumption will be zero.
ENERGY CONSUMPTION = 5 W x 0 h
ENERGY CONSUMPTION = 0 Wh
If you run the light for 1 hour your energy consumption will be:
ENERGY CONSUMPTION = 5 W x 1 h
ENERGY CONSUMPTION = 5 Wh or 0.005 kWh
The energy consumption of your house can be calculated by using the same logic for every appliance you use.