Average consumption of electrical devices
How to calculate the consumption of electrical devices
You can calculate the consumption of an electrical device when you know the device's power (measured in watts, W) and the amount of time it is used for. Before calculating the consumption, you should always convert the device's nominal power into kilowatts (1,000 watts = 1 kilowatt) and the period of time the device is used for into hours (30 minutes = 0.5 hours). You can then calculate the device's energy consumption (measured in kWh) by multiplying the device's power (kW) by the time it is in use (h).
Example: Vacuuming your house each week takes 1.5 hours. The power of the vacuum cleaner is 1 kW. The consumption is therefore 1.5 kWh (1x1,5).
In the tables that follow, we have listed the average consumption of some of the most common household appliances, as well as heating and lighting options.