If you are on an electricity plan that features different rates depending on the time of day you consume energy, you will either be on a Smart meter or manually read Interval meter.
Interval meters, also known as Time of Use meters, measure electricity usage every 30 minutes and records it. Depending on the energy retailer, this means customers can be charged cheaper rates for off peak periods and higher for peak usage (some also include a different rate for shoulder periods) or be charged the same regardless of time of day.
Unlike Basic meters, these are digital meters and the usage is recorded but the Energy Network Distributor must still vist your property to access the reads. In this case, the meter reader will attach an optical probe to a port on the meter and the information is automatically sent through to their system. Once validated, the readings are sent to the Electricity retailer to use to generate a bill.