Ensuring a permanently safe energy supply requires a complex energy infrastructure in which the electricity grid and the transmission grid in particular play a vital role. In this section you can learn more about the responsibilities of the four transmission system operators as well as about the foundations of our electricity grids and the challenges of grid planning in the context of the German energy transition.

Transmission system operators

In Germany, the four transmission system operators, 50Hertz, Amprion, TenneT and TransnetBW are responsible for the transmission grid for the nationwide supply and transmission of electricity at ultra-high voltage. It is their statutory and social mandate to ensure the safety of the electricity supply. Learn more about the role that the transmission system operators play in the joint project of implementing the German energy transition.



Energy networks

Our electricity supply is guaranteed thanks to a stable energy infrastructure that has grown over decades – a complex interplay of power stations, transformers, energy storage facilities and power lines. Expanding the supply from renewable energy sources also brings about fluctuations in electricity generation and extra loads in the grids. Here you can find out how the transmission system operators are able to master these technical challenges.


Media library

Our media library provides quick access to all Grid Development Plans, supplements, background information and presentations. In addition to this, you will also find all relevant laws and studies on grid expansion and a comprehensive selection of pictures. We also have some short animated videos to help explain the process of producing the Grid Development Plan and the public consultation cycle.



From A for AC connector to V for Voltage support: here you will find explanations of numerous technical terms used in network planning, with links to many supporting articles.