The generation of power from wind and sun is increasing steadily and strongly in the control area of TSCNET shareholder 50Hertz, the north-eastern German transmission system operator (TSO). 21.6TWh of wind power were generated in the first half of 2019, compared with only 16.6TWh in the corresponding period of the previous year. In the same time, photovoltaic generation amounted to 6TWh, which is an increase of almost 170GWh. This corresponds with the rise in the installed capacity of onshore and offshore wind turbines, which totalled 19.6GW in mid-2019 (mid-2018: 18.9GW) and the installed capacity of photovoltaic systems, which reached 11.1GW (mid-2018: 10.6GW).
Despite this capacity increase and the incrementing feed-in of electricity into the grid, 50Hertz was able to maintain stable costs for congestion management, such as interventions in the operation of conventional power plants and the temporary shutdown of renewable energy facilities. In the first half of 2019, redispatch costs amounted to around €13m and the costs for feed-in management to around €48m.
This increase in renewable generation and installed capacity from renewable facilities shows that northern and eastern Germany make an indispensable contribution to achieving the German government’s target of a 65% share of renewable energies in nationwide electricity consumption by 2030. However, from the TSO perspective of 50Hertz, the necessary grid extension must be pushed ahead in parallel to be able to transmit the green electricity to the consumption centres in the south and to keep congestion management costs under control.
The generation of electricity from renewable sources is increasing in the control area of 50Hertz (picture showing the transformer platform of the Baltic Sea wind farm Arkona: 50Hertz)
> See 50Hertz press release, in German (html)