Interruptible Loads


Control Reserve + Interruptible Loads

TransnetBW GmbH

Dimitri Beitsch

System Management - Trading

Pariser Platz
Osloer Strasse 15-17

70173 Stuttgart, Germany

T +49 711 21858-3318

F +49 711 21858-4423

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With the Ordinance on Interruptible Load Agreements (AbLaV) the regulatory framework for the contractual obligation of interruptible loads has been adapted to the developments of the German energy market. The requirements on interruptible loads have been modified so that loads from 5 MW with predictable load characteristics can be prequalified as interruptible loads in accordance with the AbLaV so that they can be obliged to take measures to maintain grid and system security.

For the purpose of AbLaV, interruptible loads are defined as consumption units which can reliably reduce their demand by a fixed capacity upon request by the German transmission system operators (TSO). Suppliers have the possibility to submit a tender individually in accordance to the technical characteristics of their loads. Due to modified prequalification requirements and the weekly tendering period the product of interruptible loads is designed more flexibly.

In accordance with AbLaV, the TSOs issue a call for tenders each week for 750 MW of immediately interruptible loads (SOL) and an equal volume of quickly interruptible loads (SNL) through the TSOs' joint tendering platform: The Federal Network Agency (Bundesnetzagentur) is authorised to adjust the amount of tendering volume based on periodic demand analysis by the transmission system operators if necessary.

To participate in a tendering procedure, each provider that has switch-off capacity at its disposal and wants to offer it on the market needs to successfully participate in the prequalification procedure of the TSO it is connected to. This is a prerequisite for the framework agreement with the relevant connecting TSO. You can download the Ordinance on Interruptible Load Agreements (AbLaV) via the link below.


In the prequalification process, the supplier has to demonstrate that the interruptible capacity meet the prequalification requirements of the transmission system operator based on the AbLaV. The documents for the prequalification of interruptible loads can be found on the TSOs' joint tendering platform.

At first we would like to ask you to check the IT-requirements that are described in the annex to the prequalification document „Mindestanforderungen an Informationstechnik des Anbieters". If you want to participate in the prequalification process, a promt implementation of the IT-requirements will be necessary because system adaption will be also necessary by the TSO. These adaptions will be time-consuming and furthermore dependent on external factors. If you have any questions, please do not hesitate to contact us.

Furthermore you can download the specific Prequalification Requirements by TransnetBW GmbH via the link below.

Framework agreement

To implement the contractual provisions of the AbLaV a national framework agreement was developed by the TSOs. This agreement governs the contractual relationship between the connecting TSO and a potential supplier of an interruptible load.

With the conclusion of the framework agreement the technical, organizational, operational, commercial and legal restrictions between transmission system operators and the supplier for the utilization of an interruptible load are defined. The framework agreement explicitly regulates the tendering and bid acceptance process as well as the requirements and responsibilities for the provision, activation and remuneration of interruptible loads. In addition the activation options and different product qualities are defined. Essential precondition for the conclusion of the framework agreement is the successfully completed prequalification process for the interruptible load. The documentation of the successful prequalification is part of a valid framework agreement. Participation in the tender process is only possible with a valid framework agreement.

You can download the sample framework agreements including the annexes on the TSOs' joint tendering platform.


The call for tenders takes place on the German TSOs' joint tendering platform. You can find the scheduled dates of the tenders in the tendering calender on the joint tendering platform.

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