A metering device (2) comprises an energy generation unit (12) for generating comparatively small amounts of energy during an operating cycle an energy storage unit (24, 26) for buffering the amount of energy generated a control unit (14) for determining an item of current state information (I) and a processing unit (16) for processing the current state information (I) further, wherein the energy requirement of the control unit (14) and the energy requirement of the display unit (16) are different, and the allocation of the limited amount of energy for the control unit (14) and the processing unit (16) is regulated according to the different energy requirement.
