Tennet conducts market survey on grid boosters

07.02.2020

Power generation in Germany is changing rapidly in the course of the energy transition and a 65% share of renewable energies is expected in 2030. To meet the challenge of integrating these quantities of renewables, it is necessary for the four German transmission system operators (TSOs) to supplement the mandatory grid expansion with technical innovations. The higher utilisation of the existing transmission system plays a particularly important role in this respect, because if the generated electricity exceeds line capacities, the TSOs have to carry out costly redispatch measures.

TSCNET shareholder TenneT, the Dutch-German TSO, plans to implement grid boosters, an innovation also considered in the German “Network Development Plan 2030”. The general idea of grid boosters involves fast power sources in the form of large batteries. TenneT’s grid booster concept provides for a higher utilisation of the grid during smooth operation. If a transmission line within the monitoring range of the grid boosters exceeds a predefined limit value, the load of the respective circuit is restored to permanently permissible values within a short time by reactive use of the grid boosters.

TenneT is now conducting a market survey on the grid boosters. The purpose of this enquiry is to prepare for the award of contracts and to inform the market players. All interested parties are invited to participate in this process and to submit a written statement on the intended approach by 31 March 2020 via a platform set up by the TSO. The results of the process should help TenneT to carry out a competitive, transparent and non-discriminatory award procedure.

TenneT invites market players to participate in a market survey on grid boosters

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> See TenneT press release, in German (html)
> Visit market survey platform, in German (html)

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TransnetBW’s grid booster confirmed

22.12.2019

Power generation in Germany is changing rapidly in the course of the energy transition and increasingly large amounts of renewable electricity must be transmitted from the north and east to the south and west. If the generated electricity exceeds line capacities, the four German transmission system operators (TSOs) have to perform costly redispatch measures. The grid infrastructure clearly needs expansion, for which the four German transmission system operators (TSOs) have conceived the “Network Development Plan (NDP) 2030”, the 2019 version of which was published this spring. To minimise the need for grid extension and cut redispatch costs, the NDP includes innovations that could result from technological progress in the coming years. In addition to Power-to-X and monitoring systems, prototypes of so-called grid boosters are also considered.

TSCNET shareholder TransnetBW, the TSO from the southwest of Germany, plans a grid booster pilot at the Kupferzell substation near Schwäbisch-Hall in the German federal state of Baden-Württemberg. The concept includes a fast power source in the shape of a large battery at the end of a line section that is subject to frequent strain and overload, which applies to the Kupferzell grid node. The grid booster that is envisaged, one of three in the NDP, will have an output of 250MW. The booster battery can supply energy within a few seconds. In periods of high grid load, the booster is intended to relieve the system in case of disturbances until the bottleneck can be eliminated in a targeted manner by the system management.

The Federal Network Agency (Bundesnetzagentur), the competent authority, has now approved the booster plans of TransnetBW. With this confirmation by the agency, the project can enter the procedure for inclusion in the Federal Requirements Plan, the government list of essential projects for the sustainable energy future of Germany. TransnetBW considers the grid booster to be a great opportunity to design and operate the grid infrastructure efficiently in the long term and is investing a high multi-digit million-euro amount in this environmentally friendly storage technology.

The Federal Network Agency confirms the plans of TransnetBW for a grid booster at the Kupferzell grid node (illustration using a picture of TransnetBW)

Linkup
> See TransnetBW press release, in German (html)

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