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n accordance with Section 13 (1) EnWG, the transmission system operators (TSOs) are obliged, among other things, to carry out measures in accordance with Section 13a (1) EnWG (redispatch). The redispatch processing server (RAS) is used to process these measures. The harmonized activation process (HAP) was developed by the TSOs in 2019 for coordination with the parties responsible for scheduling (EIV). In the summer of 2026, the HAP was expanded to include the additional process “situational intraday curtailment.”With the HAP, the redispatch is called up by exchanging XML files based on the ENTSO-E formats. The following process diagram illustrates the coordination process. There are also supporting processes that ensure secure operation.
To participate in the HAP, the EIV requires software that can process the files and send the corresponding responses back to the TSO. The TSOs provide the RACE (Redispatch Activation Client) for this purpose. This application is free of charge for the EIV. Further information on the RACE application can be found below.However, an EIV is also free to develop its own solution for the coordination processes. The EIV is responsible for ensuring that its own software solutions function properly. To this end, the process description and the attached format specifications must be strictly adhered to. Planning and further development must always be coordinated with the connecting TSO.The commissioning of EIVs always takes place in consultation with the connecting TSO and is accompanied by extensive integration and functional tests. The TSOs recommend using RACE, which has already been successfully tested in operation by a large number of EIVs. Furthermore, the TSOs provide support for further developments and security updates.
50Hertz Transmission GmbHredispatch-abwicklung@50hertz.comHeidestraße 210557 Berlin
TenneT TSO GmbHhap@tennet.euBernecker Str. 7095448 Bayreuth
Amprion GmbH redispatch.kontakt@amprion.netVon-Werth-Str. 27450259 Pulheim
TransnetBW GmbHRD-Abwicklungstool@transnetbw.dePariser PlatzOsloer Straße 15-1770173 Stuttgart