Technical Connection Rules (TCR)

Because of changes caused by the energy revolution, supplying power is becoming more complex. This change is particularly noticeable in the number of customer systems on the power grid. Thanks to the numerous, often small, renewable energy plants, significantly more plants are connected to the grid than before. In contrast to large, conventional power plants, many of these smaller ones are connected to low and medium voltage grids. As the number of plants increases and the new challenges for lower network levels grow, it has become essential to implement requirements on customer systems that are uniform nationwide. These are prepared in advance by VDE FNN in the form of Technical Connection Rules.

The Technical Connection Rules (TCR) outline the essential issues to consider when connecting customer systems to the public utility grid. Moreover, the TCR contain important information on the operation of such systems.