A wind farm or wind park, also called a wind power station or wind power plant, is a group of wind turbines in the same location used to produce electricity. Wind farms vary in size from a small number of turbines to several hundred wind turbines covering an extensive area. Wind farms can be either onshore or offshore.
The net capacity factor is the unitless ratio of actual electrical energy output over a given period of time to the theoretical maximum electrical energy output over that period. The theoretical maximum energy output of a given installation is defined as that due to its continuous operation at full nameplate capacity over the relevant period. The capacity factor can be calculated for any electricity producing installation, such as a fuel consuming power plant or one using renewable energy, such as wind, the sun or hydro-electric installations. The average capacity factor can also be defined for any class of such installations, and can be used to compare different types of electricity production.
The United Kingdom is the best location for wind power in Europe and one of the best in the world. The combination of long coastline, shallow water and strong winds make offshore wind unusually effective.
Denmark was a pioneer in developing commercial wind power during the 1970s, and today a substantial share of the wind turbines around the world are produced by Danish manufacturers such as Vestas—the world's largest wind-turbine manufacturer—along with many component suppliers. Furthermore, Denmark has - as of 2022 - the 2nd highest amount in the world of wind power generation capacity installed per capita, behind only neighboring Sweden.
As of 2023, Europe had a total installed wind capacity of 255 gigawatts (GW). In 2017, a total of 15,680 MW of wind power was installed, representing 55% of all new power capacity, and the wind power generated 336 TWh of electricity, enough to supply 11.6% of the EU's electricity consumption.
Sweden consumes about 150 terawatt hours of electricity per year, of which about 27.1 TW·h (19.0%) was generated from domestic wind power resources in 2021, up from 2.4% in 2010 and 0.3% in 2000.
China is the world leader in wind power generation, with the largest installed capacity of any nation and continued rapid growth in new wind facilities. With its large land mass and long coastline, China has exceptional wind power resources: Wind power remained China's third-largest source of electricity at the end of 2021, accounting for 7.5% of total power generation.
In 2021 France reached a total of 18,676 megawatts (MW) installed wind power capacity placing France at that time as the world's seventh largest wind power nation by installed capacity, behind the United Kingdom and Brazil and ahead of Canada and Italy. According to the IEA the yearly wind production was 20.2 TWh in 2015, representing almost 23% of the 88.4 TWh from renewable sources in France during that year. Wind provided 4.3% of the country's electricity demand in 2015.
Wind power in Romania has total cumulative installed capacity of 3,028 MW as of the end of 2016, up from the 14 MW installed capacity in 2009.
Wind power is a growing source of electricity in Poland. In 2019, wind was the second most important source of electricity produced in Poland, after coal, accounting for about 10% of the electricity production.
Wind power in Italy, at the end of 2015, consisted of more than 1,847 wind turbines with a total installed capacity of 8,958 megawatts. Wind power contributed 5.4% of Italy electricity generation in 2015 (14,589 GWh). Italy is ranked as the world's tenth producer of wind power as of the end of 2016. Prospects for Italian wind energy beyond 2020 were positive, with several projects planned to go live before 2030.
Offshore wind power or offshore wind energy is the generation of electricity through wind farms in bodies of water, usually at sea. There are higher wind speeds offshore than on land, so offshore farms generate more electricity per amount of capacity installed. Offshore wind farms are also less controversial than those on land, as they have less impact on people and the landscape.
As of November 2023, wind power in the Netherlands has an installed capacity of 11,602 MW, 40.9% of which is based offshore. In 2022, the wind turbines provided the country with 18.37% of its electricity demand during the year. Windmills have historically played a major part in the Netherlands by providing an alternative to water driven mills.
The electricity sector in Finland relies on nuclear power, renewable energy, cogeneration and electricity import from neighboring countries. Finland has the highest per-capita electricity consumption in the EU. Co-generation of heat and electricity for industry process heat and district heating is common. Finland is one of the last countries in the world still burning peat.
Majority of electricity production in Sweden relies on hydro power and nuclear power. In 2008 the consumption of electricity in Sweden was 16018 kWh per capita, compared to EU average 7409 kWh per capita. Sweden has a national grid, which is part of the Synchronous grid of Northern Europe. A specialty of the Nordic energy market is the existence of so-called electricity price areas, which complicate the wholesale Nordic energy market.
Denmark's western electrical grid is part of the Synchronous grid of Continental Europe whereas the eastern part is connected to the Synchronous grid of Northern Europe via Sweden.
The electricity sector in France is dominated by its nuclear power, which accounted for 71.7% of total production in 2018, while renewables and fossil fuels accounted for 21.3% and 7.1%, respectively. France has the largest share of nuclear electricity in the world, and together with renewable energy supplies, this has helped its grid achieve very low carbon intensity.
Fosen Vind is a complex of six onshore wind farms in Fosen, Norway, commissioned in 2018-20. With a nameplate capacity of 1 GW the project is Europe's second largest onshore wind farm ; it more than doubled Norway's capacity for wind power generation.
Kriegers Flak is a 605 MW offshore wind farm in the Baltic Sea on the Danish part of the reef of the same name. It forms part of a new 400 MW interconnector between Denmark and Germany.
