The metering of electricity and natural gas is the responsibility of the network operators. They collect data either automatically from communicating smart meters or by “manual” meter reading.
Your network operator passes this data on to your supplier who will then calculate your bill on this basis. You may thus obtain your consumption data from your supplier and from your network operator.
Some suppliers and network operators have set up an Internet portal through which their customers can access their consumption data. If the consumer has a communicating smart meter installed, suppliers are now able to offer the possibility of monthly billing based on actual consumption.