OMS means "Open Metering System" and is a manufacturer-independent and open communication standard for the collection and transmission of metering data from the energy and utilities sector. OMS is the only standard in Europe that integrates all data such as electricity, heat, water and gas, including submetering, into one system. This means that data from different metering products can be exchanged between consumption processing systems. OMS is based on European standards and was developed by the industry as a uniform protocol and data format to enable interoperability between metering devices. The use of OMS enables an open market for metering devices, better data transparency and easier integration of the corresponding devices for suppliers and consumers.