G 685-7 (A)
Gas Billing - Difference Value Formation
Gasabrechnung – Differenzwertbildung
Brief description
The determination of energy as the basis for billing processes is usually carried out using metering devices that comply with calibration law at a metering location. In some cases, the energy is determined as a total, for example by measuring several metering locations in parallel. Summation is permissible because it does not lead to additional uncertainty in the determination of energy. This is not the case if the difference between two energies is to be billed. Such a situation arises when gas is initially metered via one or more input metering(s) and part of this quantity is supplied to one customer via one or more output metering(s), while the remaining quantity is supplied to another customer without metering.
