Your monthly consumption is based on the persons living in the household in combination with your address (and the associated network operator) and used to calculate your monthly payment.
Potential deviations (over or underconsumption) will be compensated with the end-of-year invoice. If you feel your monthly balance is not quite right, you can easily adjust it at any time in the Ostrom app, available for both iOS and Android.
You can find more detailed information on the balance and deposit payments in our Terms and Conditions.