An inventory system in which a location identifier is drawn from a power network

An inventory system for articles which are provided as an energy collector having a connection for an energy supply network and each have an individual article identification as part of an inventory of information that can be verified from a central point, wherein in the region of an energy network connection unit receiving the energy system comprises a transmitter for the energy, is provided as additional information imprinted location identifier, which differs from other location identifications in the energy network and the location identification from the energy power supply unit exclusively in the direction associated with that solid operatively connected to the at least one associated with this energy network connection unit energy receiving system can be emitted in receiving the power system is provided for this localization code a receiver and a converter, wherein the location identification together with o converts in association with the object identifier into a suitable format for transmission data.