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Full article: News of 50Hertz
Partial operation of power line from Thuringia to North Bavaria planned for 2015
Partial operation will reinforce regional supply during winter months
– The first electrical circuit of the extra-high voltage transmission line from Thuringia to North Bavaria (the South-West Interconnector or Thuringian Elec-tricity Bridge), which is of strategic importance for the electricity supply within Germany, should be in service before the year is out. As such, part of the power link can alleviate the congested power transmission from the north-east to the south and south-west of Germany as well as stabilise the Grafenrheinfeld region after the nuclear power plant located there goes offline, even before the winter period. According to the original schedule, the entire line (meaning both circuits) would go operational in the spring of 2016.
As the construction work is progressing quickly, the first electrical circuit will now be put into operation sooner than planned. This is for economic reasons as well as for reasons of system operation: partial operation before the winter months, during which the grid frequently faces strong loads, will stabilise the electrical grid at the border between Thuringia and Bavaria. Another reason are the costs for grid congestion management, which went up by another leap this year. These measures raise grid fees and consequently increase the electricity prices. In the 50Hertz grid area alone, this year's expenses for temporary congestion management will amount to between 300 and 400 million EUR. The costs for these measures, which will stabilise the electrical grid, are in the end borne by the private, commercial and industrial consumers in the region.
The advanced commissioning of the first electrical circuit can save part of the congestion costs at the crossing point between Thuringia and Bavaria, and the transfer capacity to the south can be increased more quickly, ahead of the criti-cal winter period.
By taking a series of specific measures, 50Hertz will be able to advance the commissioning of the first electrical circuit on the Thuringian side. Dr Frank Gol-letz, Chief Technical Officer at 50Hertz, is pleased that the good progress being made on the construction of the line has made this unconventional approach possible: "If the weather does not upset our plans, we can bring the first circuit into operation before the end of the year. A greater capacity will then be availa-ble for the transmission of electricity to the south: sooner than expected, and more importantly, before the critical winter months. This is combined with a re-duction of the load on the heavily used line between Remptendorf in Thuringia and Redwitz in Bavaria, which up till now was the only connection between both states. This is positive for the stability of the grid and beneficial to the consumer, as the expenses of grid management can be cut back", stated Golletz.
Measures for grid congestion management:
In order to keep the electrical grid stable, system operators have to interfere in the operating mode of conventional power stations ("redispatch") as well as reduce the output of renewable energy installations as ultima ratio more and more often because power generated in the north and east of Germany cannot be consumed locally nor transported to the south in the required quantities. The number of these measures is increasing and causes ever higher costs, which are included in the annual calculation of the grid fees. In the end, they raise the total price for electricity. The cause of these rising costs is the delayed grid de-velopment. This is especially true for the connections between the north-east and the south-west of Germany.
Information on the South-West Interconnector (Thuringian Electricity Bridge):
The first of a total of four sections between Lauchstädt and Erfurt-Vieselbach (78 kilometres) was already commissioned in December 2008. In early July 2015, the second section between Vieselbach and Altenfeld in the Thuringian Forest (57 kilometres) was energised. The third section between Altenfeld and the state border with Bavaria (26 kilometres) is currently being constructed. Beyond the border, transmission system operator TenneT continues the line up to the Bavarian town of Redwitz located nearby. This is the fourth section, with a length of about 30 kilometres.
With over 950 collaborators, 50Hertz handles the operation and the expansion of the transmission network. Furthermore, the company is responsible for the management of the overall electrical system throughout the German Länder of Berlin, Brandenburg, Hamburg, Mecklenburg-Western Pomerania, Saxony, Saxony-Anhalt and Thuringia. As transmission system operator active in the Central European market, 50Hertz is responsible for the secure integration of renewable energies, the development of the European electricity market and for maintaining a high level of security of supply. Since 2010, Belgian grid operator Elia and Australian infrastructure fund IFM Investors are shareholders of 50Hertz, holding stakes of 60% and 40% respectively. As a European transmission system operator, 50Hertz is part of the Elia Group and a member of ENTSO-E, the European Network of Transmission System Operators for Electricity.
For further information, please contact:
Dr. Dirk Manthey, T +4930-5150 3419, M +49173 6756634,
Kerstin Rippel, T +4930-5150 3418, M +49172 5805691,
Dr. Dirk Manthey
+49 (0) 30 5150-3419
+49 (0) 30-5150-2199