Go-ahead for additional system stability measures
Klaus Müller: "We want to secure system stability for the future"
Year of issue 2025
Date of issue 2025.07.31
The Bundesnetzagentur has today published the System Stability Report 2025 by the transmission system operators (TSOs), along with its own assessment of the report.
"The German electricity system is one of the most reliable in the world and we’re working to make sure it stays that way,"
said Klaus Müller, President of the Bundesnetzagentur. "The Bundesnetzagentur supports the additional technical measures put forward by the TSOs. Our aim is to secure this high level of reliability for the future as well."
Secure system operation in the future
The Bundesnetzagentur supports the consistent implementation of the recommendations proposed by the TSOs, which play a central role as they bear the responsibility for the system. The recommendations are also addressed to other parties and include amendments to international and German technical regulations.
These also refer to technical requirements for installations on the grid, which have to contribute to stability with, for example, controllable reactive power and inertia. Specifically, the focus is on the rapid revision of the network codes “Requirements for Generators”, “Demand Connection” and “High Voltage Direct Current” (HVDC) by the European Commission.
Adjustments also need to be made regarding the interaction of system operation and market processes. For example, suitable market signals and incentives should be used to avoid surplus generation so that it does not need to be balanced in the operation of the network.
It is also necessary for the TSOs to review and revise the system defence plan and the restoration concepts.
The system stability report confirms the Bundesnetzagentur’s view that a legal basis for the addition of flexible back-up power plants, including requirements of their system-stabilising features, is needed in the near future.
It will use further examinations to review elements that increase the stability of the system, such as rotating phase shifters and static synchronous compensators (STATCOM), and confirm them in the network development plan.
Background
The electricity system is becoming more and more complex as a result of further developments in the market and changing circumstances of new consumers and generators, leading to new requirements of system stability, security and robustness.
Every two years, the system stability report looks at how robust the German electricity system is to disturbances. It is the Bundesnetzagentur’s role to assess the report and the required action described in it and to add its own analyses.
The TSOs’ System Stability Report 2025 and the Bundesnetzagentur’s assessment of the report are published (in German) on the Bundesnetzagentur’s website at: www.bundesnetzagentur.de/1010894.
