Elektrum prepares and sends out invoices no later than by the 15th of each month. The time of invoicing depends on the date when the network operator (eg Elektrilevi or Imatra) forwards their consumption data to us, therefore the date of invoicing may be different from month to month. Elektrum Estonia does not issue invoices if the invoice amount is less than 5.00 euros. In that case, the invoice will be issued in the month when 5.00 euros is filled.