Calculations

Calculator of energy costs

How much power does a device consume per day?
Where can I save energy?
How much are the electricity costs per year?

Enter power, time of operation, electricity rate and confirm with 'OK' correspondingly.

W
h
ct/kWh

The total costs that you have to pay for the power consumption of a device result from the power of the device, the operating time per day and the pice of one kilowatt-hour.
Example: For a lightning bulb of 100 W you have to pay more than 45 per year at a electricity rate of 25 ct/kWh if it is switched on five hours per day. Replacing the bulb by a energy saving lamp of 20 W you only would pay slightly more than 9 per year. This would be a saving of over 36 .

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