Berlin, 17 July 2019 – In the first half of 2019, more wind and solar power was generated in the 50Hertz grid area than in the same period last year. According to preliminary calculations by 50Hertz, 21,591 gigawatt-hours (GWh) of wind power were generated in the eastern German states as well as in Berlin and Hamburg during the first six months of this year. During the first half of 2018, this had been only 16,562 GWh. The generation of solar power amounted to 6,045 GWh in the first half of 2019, an increase by almost 170 GWh.
According to a first estimate by 50Hertz, especially the generally higher wind output as well as additionally installed offshore wind turbines contributed to this increase. The installed capacity of wind turbines onshore and offshore amounted to approximately 19,571 megawatts by mid 2019 (mid 2018: 18,856 MW). The installed photo-voltaic capacity amounted to 11,066 MW by mid 2019 (mid 2018: 10,566 MW).
Despite this growth of installed capacity and electricity output, 50Hertz was able to keep the costs for congestion management in the grid stable. Part of this congestion management consists in interventions in the operation of conventional power plants (redispatch according to § 13.1 of the Energy Industry Act) as well as the temporary curtailment of renewable energy sources (RES) (generation management as per § 13.2 of the Energy Industry Act).
According to 50Hertz’ first estimates for the first half of 2019, redispatch costs amounted to about 13 million EUR. The costs for the RES-curtailment in the same period were estimated at about 48 million EUR. According to these preliminary estimates, the total cost for congestion management in the 50Hertz grid area for the first half of 2019 adds up to approximately 61 million EUR.
This increase in installed RES-capacity and RES-generation between mid 2018 and mid 2019 show that the development and use of renewables keep moving forward in the north and east of Germany. As such, this region makes an indispensable contribution to achieving the objective of the Federal Government to have a 65 per cent share of RES in Germany by 2030. 50Hertz feels that the necessary grid development has to be driven forward at the same time so that the eco-friendly electricity can be transported to the consumption centres in the South and the costs for congestion management can be kept under control.
Press release as PDF file