Another option is that the system usage fee is paid by the Trader to the Distribution Licensee. In such an event the system usage fees are charged by the Trader to the User in what is called an integrated bill, together with the electricity fee.
For Users with settlement based on 15-minute remote readings, the monthly bill is issued on the basis of the aggregated consumption determined by remote reading, and so the submission of the actual meter reading by the User would not change anything in the monthly bills and therefore it is not required, save for supplier switching.