Your electric bill is due 30 days after the day following the meter-reading day. We have a system in which late payments of electric bills are charged an annual interest rate of 10% (about 0.03% per day), depending upon the number of days that have elapsed from the day after the payment due date.
However, for bank transfer payments, depending on circumstances, late payment charges will not be incurred if the bill is paid within 10 days of the day after the due date.