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Daily Cycles Germany


The figure shows the timing of the wind power fed into the grid on extreme days in 2018 and highlights the special situations and power fluctuations to which the grid is exposed. The absolute highest value of wind power to date was reached on 8th December 2018 with 49 862 MW between 11 am and 12 am. The day with the highest average wind power (46 695 MW) over 24 hours was also observed on 8th December 2018. Particularly high values were measured, favoured by a low-pressure system with high wind speeds and a large spatial expansion. The average output of the »Wind Farm Germany« in 2018 was 13 087 MW. The daily output of 8th December 2018 was 3.2 times the average daily output, with a corresponding energy yield of 1,12 TWh. Based on the share of wind power in the grid feed-in, Germany ranked second in Europe with 71 percent on this day. Denmark was the leader on this day and was able to cover 95 percent of its electricity requirements by feeding in wind power. Across Europe, the average was approx. 25 percent [Wind Europe]






Extreme diurnal variations of wind power feed-in into the German grid 2018, based on quarter-hourly extrapolations of the wind power and the development of the electricity price on the EPEX Spot auction market for these extreme days

Data sources: [UeNB onshore][UeNB offshore]; [EPEX PHELIX]; [EPEX Day-Ahead-Auktion]



The day with the lowest wind yields was 24th July 2018. With an average output of 1338 MW, corresponding to 10 percent of the average daily output, only 32,1 GWh of wind power was fed in on this day. The maximum absolute increase in wind power within one hour was measured on 21st July 2018. From 10 am to 11 am, wind power rose by 7160 MW to approx. 29 414 MW, which corresponds to a power increase of around 38 percent within one hour.


The opposite behaviour and a very strong decrease in power was observed on 1st May 2018. Here, wind power dropped by 5076 MW from 7 pm to 8 pm. The highest value for electricity on the spot market was reached on 22nd November 2018. It was 12,96 ct/kWh. The lowest value was at -7,6 ct/kWh on 1st January 2018.


The influence of the feed-in from wind and other renewables is partly reflected in the development of stock exchange electricity prices over time. Thus, on 1st May 2018 a strong feed-in of photovoltaics was recorded, together with the negative electricity prices. The day with the lowest electricity price is also associated with a low-pressure system. Nevertheless, factors that influence pricing are complex and not exclusively attributable to individual producers.