nature & planetanalysisOur World in Data

Wind generated nearly 60 percent of Denmark's electricity in 2023, the highest share of any country

the gist

In 2023 wind power generated nearly 60 percent of Denmark's electricity, the highest share of any country. Denmark has the right conditions: it is flat, windy and surrounded by sea, and its offshore sites lie in shallow water where turbines can be fixed to the seabed. The country began building wind farms in the 1970s, after the oil crisis made imported fuel expensive, and later pioneered offshore parks. Because wind is variable, Denmark relies on strong connections to Norway, Sweden and Germany, exporting surplus power and importing when the wind drops. A wind-heavy grid depends less on the turbines alone than on the links that share power across borders.

how it works

A turbine's blades turn a generator when wind passes over them, so output rises steeply with wind speed until it reaches the rated limit. Connecting regions across a wide area smooths supply, since the wind is usually blowing somewhere.

so what

Denmark is the clearest real-world test of whether a grid can run mostly on variable wind, and it has become a model for other countries. Its success depends on trading power with neighbours, which is why European grid links are central to climate policy.

Our World in Data · CC BY 4.0

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