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Due to lack of wind, wind turbines became inoperable in 2021

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According to the latest report from the Copernicus Program, wind speeds in 2021 were expected to be very low in some European countries. Especially in northern Europe, many wind turbines have been installed.

Bad weather for wind turbines! In Europe, the winds are as rare as last year. In 2021, wind speeds will be the lowest recorded in some parts of the old continent for at least forty years. according to The latest report from the Copernicus space programThe European Observatory, which is responsible for collecting data on the planet’s condition, has to go back to 1979 to find such a low level, the date of the first historical data.

In an area that passes through the North Sea from Ireland and the United Kingdom to Denmark, Germany and the Czech Republic, the annual average wind speed in some places is up to 10% lower than the average recorded during the 1991 reference period. 2020. On the other hand, the Copernicus report states that strong winds were recorded in the south-east of Europe, especially in Italy, Greece, Turkey and the Balkans.

Annual annual and quarterly wind speed fluctuations of 100 m / h in 2021 compared to the 1991-2020 reference period.
Annual annual and quarterly wind speed fluctuations of 100 m / h in 2021 compared to the 1991-2020 reference period. © Copernicus

However, this situation is not without consequences for Europe’s energy supply. Countries with low wind speeds are the most developed countries for wind power. Germany has the largest production capacity on the continent, and the United Kingdom ranks third on the podium. On the coast of Denmark, 44% of consumption is through wind turbines, and the seashore is covered by farms.

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The most frequently observed indicator

In terms of coastal winds, the average annual production capacity in Germany and the UK in 2021 was 13% lower than the annual average in 1991-2020, reaching 15% in Ireland and Chechnya. In terms of offshore wind power, the production capacity of the Netherlands, Germany and Denmark was about 9% lower than the same average. In the UK and Ireland it was less than 10 per cent.

Declining annual wind power factor (CF) by 2021 for offshore (left) and offshore (right) wind power generation compared to the 1991-2020 baseline.
Declining annual wind power factor (CF) by 2021 for offshore (left) and offshore (right) wind power generation compared to the 1991-2020 baseline. © Copernicus

According to a Copernicus report, a 10% reduction in wind speed results in a 27% reduction in power from a wind turbine – incidentally, a lower speed is required to generate electricity. With the increase in wind energy, as in France, the evolution of wind speed measurements becomes an indicator that is closely monitored. If such episodes recur on their own or become normal, it may have implications for his development.

Professionals in this field are confident, especially relying on technical improvements. “A wind turbine begins to generate electricity by blowing at a speed of 10 km per hour,” assures Energy Eolian-Michel Gioria, a spokesman for France, “Network balancing is as easy as wind can predict.” To The cross. However, due to global warming, wind speeds in Europe may slow in the future.

Jean-Baptiste Hughes and Jeremy Bruno

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