Wind power is the use of wind energy to generate useful work. Historically, wind power was used by sails, windmills and windpumps, but today it is mostly used to generate electricity. This article deals only with wind power for electricity generation.
Today, wind power is generated almost completely with wind turbines, generally grouped into wind farms and connected to the electrical grid.
In 2022, wind supplied over 2000 TWh of electricity, which was over 7% of world electricity and about 2% of world energy. With about 100 GW added during 2021, mostly in China and the United States, global installed wind power capacity exceeded 800 GW. To help meet the Paris Agreement goals to limit climate change, analysts say it should expand much faster - by over 1% of electricity generation per year. (Full article...)
Wind turbine design is the process of defining the form and configuration of a wind turbine to extract energy from the wind. An installation consists of the systems needed to capture the wind's energy, point the turbine into the wind, convert mechanical rotation into electrical power, and other systems to start, stop, and control the turbine.
In 1919, German physicist Albert Betz showed that for a hypothetical ideal wind-energy extraction machine, the fundamental laws of conservation of mass and energy allowed no more than 16/27 (59.3%) of the wind's kinetic energy to be captured. This Betz' law limit can be approached by modern turbine designs which reach 70 to 80% of this theoretical limit. (Full article...)
China has the world's largest capacity of offshore wind power, with 25 GW operational as of mid 2022. Offshore wind in China is growing rapidly, with 16.9 GW added during 2021. (Full article...)
The tjasker (West Frisian: jasker, German: Fluttermühle) is a small type of windmill used solely for drainage purposes. It is distinctive for its simple construction, featuring only a single inclined shaft that carries the sails on one end and an Archimedes' screw on the other, in this way avoiding the need for any gearing. The tjasker is commonly known as a typical Frisian windmill though it is also found in other Dutch provinces and in north Germany. (Full article...)
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, 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.
In March 2022, the Dutch government announced that by 2030 offshore wind was to become the Netherlands' biggest power source, aiming at 21 GW of installed capacity. (Full article...)
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As of 2016, there were over 160 operational wind farms in Lithuania, but the majority of them consisted of small farms generating less than 2 MW. (Full article...)
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Gudhjem Windmill (Danish: Gudhjem Mølle) is located in the village of Gudhjem on the Danish island of Bornholm. With a sail span of 24 metres (79 ft), the Dutch mill is the largest windmill in Denmark. It served from 1893 to 1962 when it was taken out of commission. (Full article...)
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Moulin de Craca.
Moulin de Craca is a windmill in Plouézec, Côtes-d'Armor, France. First working in 1844 it was restored from 1995. It is popular amongst both locals and tourists because of its location on top of a cliff overlooking Port Lazo.
Most power stations in South Africa are owned and operated by the state owned enterprise, Eskom. These plants account for 80% of all the electricity produced in South Africa and 45% of all electricity produced on the African continent. In terms of share of GDP in 2012, South Africa was the 4th largest investor in renewable power in the world after Uruguay, Mauritius and Costa Rica. (Full article...)
Joseph Hall (1804-21 August 1871) and William Hoad purchased thirty hectares of farm land located on Metcalfe Road, Green Hill, at the original Crown sales in 1855. The following year they erected the windmill, using bluestone quarried on their property. (Full article...)
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Xarolla Windmill
The Xarolla Windmill at Żurrieq, Malta is one of the windmills constructed by the Order of St. John in the villages and towns of Malta. It was built in the 18th century and is presently one of the most preserved windmills in Malta. The windmill is an agri-tourism attraction and is found in a complex of agricultural buildings such as a farmhouse, a chapel, catacombs and others. The windmill is also used as an art studio.
In 1674 Grand MasterNicolas Cotoner built five windmills around Malta, one of which was tax-Xarolla. Tax-Xarolla Windmill was built by Grand Master Antonio Manoel de Vilhena in 1724. Sometimes after 1998, this was restored to its original working order. It is now the only functioning windmill on the islands of Malta. This is a valuable witness of local culture and heritage; it still has parts of the original mechanisms and can still grind the wheat. In the year 2000, this building was passed over to be administered by the Żurrieq Local Council and is intended to serve also as a cultural centre. The sails were extensively damaged in a gale on 18 March 2022. (Full article...)
A windpump is a wind-driven device which is used for pumping water. Windpumps were used to pump water since at least the 9th century in what is now Afghanistan, Iran and Pakistan. The use of wind pumps became widespread across the Muslim world and later spread to China and India. Windmills were later used extensively in Europe, particularly in the Netherlands and the East Anglia area of Great Britain, from the late Middle Ages onwards, to drain land for agricultural or building purposes. (Full article...)
There are two operating offshore wind farms in the United States, and several more are in permitting or under construction. The Bureau of Ocean Energy Management studies potential sites in federal waters for offshore wind energy development and leases sites to developers, who work with state regulatory agencies to interconnect and market their electricity. (Full article...)
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Xarolla Windmill
The Xarolla Windmill at Żurrieq, Malta is one of the windmills constructed by the Order of St. John in the villages and towns of Malta. It was built in the 18th century and is presently one of the most preserved windmills in Malta. The windmill is an agri-tourism attraction and is found in a complex of agricultural buildings such as a farmhouse, a chapel, catacombs and others. The windmill is also used as an art studio.
In 1674 Grand MasterNicolas Cotoner built five windmills around Malta, one of which was tax-Xarolla. Tax-Xarolla Windmill was built by Grand Master Antonio Manoel de Vilhena in 1724. Sometimes after 1998, this was restored to its original working order. It is now the only functioning windmill on the islands of Malta. This is a valuable witness of local culture and heritage; it still has parts of the original mechanisms and can still grind the wheat. In the year 2000, this building was passed over to be administered by the Żurrieq Local Council and is intended to serve also as a cultural centre. The sails were extensively damaged in a gale on 18 March 2022. (Full article...)
The Wendhausen Windmill (German: Windmühle Wendhausen) is a tower mill located in Wendhausen, a town within the municipality of Lehre, Lower Saxony, Germany. Built in 1837, it is the only five-sailed windmill in Germany still in operation. (Full article...)
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This is a list of some onshore wind farms (more than 1 turbine) in the UK. This information is gathered from multiple Internet sources, primarily the UK Wind Energy Database from RenewableUK (formerly BWEA) and The Wind Power's database. There are many operational wind farms missing from the list, such as Scotland's 522 MW Clyde Wind Farm and the 68 MW Keadby Wind Farm in North Lincolnshire, England's largest onshore wind farm. The name of the wind farm is the name used by the energy company when referring to the farm and is usually related to the name of the physical location, e.g. hill, moor, fell, down etc. or the name of the agricultural farm for the smaller installations on property owned by farmers. The "wind farm" part is implied and hence removed for clarity in most cases. Listings here are restricted to wind farms with 12 turbines or more; for a more comprehensive list, please see the individual country articles. (Full article...)
This information is gathered from multiple Internet sources, and commercial sources. The name of the wind farm is the name used by the energy company when referring to the farm and is usually related to a shoal or the name of the nearest town on shore. The "wind farm" part is implied and hence removed for clarity. (Full article...)
Like many other Maltese windmills, it has a round central tower surrounded by a number of rooms. The sails and milling machinery have been restored, as have the miller's living-quarters. The museum also contains a large collection of traditional tools, mostly for wood- and iron-working. (Full article...)
A windmill is a structure that converts wind power into rotational energy using vanes called sails or blades, by tradition specifically to mill grain (gristmills), but in some parts of the English-speaking world the term has also been extended to encompass windpumps, wind turbines, and other applications. The term wind engine is also sometimes used to describe such devices. (Full article...)
Image 20The Persian horizontal windmill, the first practical windmill. (from Windmill)
Image 21Illustration of the wind turbine for power generation erected by Josef Friedlaender at the International Electrical Exhibition in Vienna in 1883 (from Wind turbine)
Image 33The rotor of a gearless wind turbine being set. This particular turbine was prefabricated in Germany, before being shipped to the U.S. for assembly. (from Wind turbine)
Image 34An aerial view of Whitelee Wind Farm, the largest onshore wind farm in the UK and second-largest in Europe (from Wind farm)
Image 54Offshore windfarms, including floating windfarms, provide a small but growing fraction of total windfarm power generation. Such power generation capacity must grow substantially to help meet the IEA's Net Zero by 2050 pathway to combat climate change. (from Wind farm)
Image 57Kiosk at the base of the Lamma WindsNordex N50/800kW wind turbine on Lamma Island with displays showing current power output and cumulative energy produced. (from Wind turbines on public display)
Image 58The first automatically operated wind turbine, built in Cleveland in 1887 by Charles F. Brush. It was 60 feet (18 m) tall, weighed 4 tons (3.6 metric tonnes) and powered a 12 kW generator. (from Wind turbine)