In this time of energy transformation, it is increasingly important to have knowledge of a complete system's energy use or an individual output. The optimisation of energy flows from infrastructural and industrial systems no longer exclusively concerns typical energy-intensive companies, but also KMUs in industrial and service provision sectors. Also, previous knowledge of service requirements of performance components and the optimal utilisation of distribution branch points are important subjects in a modern automation environment. These tasks require a measuring infrastructure that performs well and which can be scaled according to various needs and topologies.