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.


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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