The amendment to the EnWG in February 2025 introduced a so-called “Controllability Check” for generation and storage plants, which provides for implementation tasks for all connection grid operators.
The legal basis for this is Section 12 (2b) EnWG. According to this, grid operators (at all levels) are obliged to test annually whether the controllability of systems (Section 13a (1) / Section 14 (1) EnWG) is given.
The results must be made available to the upstream grid operator, who must check their plausibility. Based on this data, the TSOs are obliged to prepare a report that must be submitted to the BNetzA and the BMWK by November 30th of each year.
The guidelines on the Controllability Check drawn up by the TSOs and the survey form can be found here:
Guidelines Controllability Check PDF
Survey Form PDF
Automatically translated with deepl.com.