Additional Reserves


Additional reserves

TransnetBW GmbH

Sebastian Schleich

Economic Grid Management / Products & Principles16

Pariser Platz
Osloer Strasse 15-17

70173 Stuttgart, Germany

T +49 (0)711 21858-3316

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To enhance its potential for redispatch measures, TransnetBW GmbH is concluding contracts for additional reserves with interested operators in Italy and Switzerland. Legal basis for these contracts is §13 (1) of the German Energy Industry Act (EnWG) which allows transmission system operators to activate additional reserves to ensure the stability of the electricity grid.

Contracts for additional reserves are concluded with suitable operators for the summer months only, when the German transmission system operators have no access to guaranteed network reserves abroad. The additional reserves for the summer months depend on the availability of contractual partners, which can be requested following a predefined activation process. A remuneration only occurs in case of actual activation and power delivery.

The additional reserves are activated if no conventional redispatch options with market plants are available anymore. Thus, the additional reserves serve as a backup to ensure the stability of the electricity grid in critical situations.

Activation of Additional Reserves

The activation of reserves may lead to restrictions regarding the allocation of cross-border transmission capacity at the border Germany- Switzerland.

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