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The Enercon E-126 is the largest model of wind turbine built to date[when?], manufactured by the German wind turbine producer Enercon. With a hub height of 135 m (443 ft), rotor diameter of 126 m (413 ft) and a total height of 198 m (650 ft), this large model can generate up to 7.58 megawatts of power per turbine. The nameplate capacity was changed from 6 MW to 7 MW after technical revisions were performed in 2009. Since 2011 the E-126 is available as a 7.5 MW nameplate windturbine. Actual output in service may slightly exceed the nominal rating. The E-126 incorporates power electronics and offers grid stabilising capabilities. 
The weight of the foundation of the turbine tower is about 2,500 t, the tower itself 2,800 t, the machine housing 128 t, the generator 220 t, the rotor (including the blade) 364 t. The total weight is about 6,000 t.
The first turbine of this model was installed in Emden, Germany in 2007. A total of 35 turbines of this model are erected (or in construction) as of September 2011, 19 in Germany, 11 in Belgium, 2 in Austria, 2 in Sweden and 1 in the Netherlands.
The list price of one unit is 11,000,000€.
Enercon E-126 market 
In June 2012, at least 147 Enercon E-126 windturbines were operating, in construction, or nearing final approval. Furthermore, during 2010-2011, onshore wind farm projects still in their early design processes were considering wind turbines of the 2-3.5 MW class, or wind turbines of the 5-8 MW class. This approach is at least applied in the Netherlands. Examples for this trend are found for instance in the preliminary research for the “Wind farm de Drentse Monden” aiming at 300-450 MW with possibly 50-60 E-126/7.5 MW turbines, “Wind farm N33” aiming at >120 MW with possibly 15-40 E-126/7.5 MW turbines, “Wind farm Krammer” aiming at >100 MW with possibly 11-21 E-126/7.5 MW turbines, “Wind farm Wieringermeer” aiming 200-400 MW with possibly 60 or more 6+ MW turbines (in that case possibly Repower 6M/6.15MW).
Belgium: Estinnes Wind Farm 
Sweden: Markbygden Wind Farm 
The world's largest wind farm, the Markbygden Wind Farm is planned to have 1,101 turbines covering 500 km², to generate 4,000 MW and an annual yield up to 12 TWh. Under construction in northern Sweden, it will contain a mix of Enercon E-126 7.58 MW wind turbines and Enercon E-101 3.05 MW wind turbines, the exact number of each type to be determined by further studies. The pilot stage wind farm at Dragaliden was completed in 2010, generating 24 MW with 12 turbines. 
Netherlands: Windpark Noordoostpolder 
Meanwhile the Netherlands government has given its final approval on January 6th 2011 for the 'Windpark Noordoostpolder, part of which consists of 38 Enercon E-126 7.58 MW wind turbines. Afterwards, an ultimate case for the highest Court of state by opponents has been closed on 8th February 2012, confirming the government decision. It’s now expected preparatory works will start before the summer of 2012.
France: Wind Farm Le Mont des 4 Faux 
In France, a pending approval for the wind farm 'Le Mont des 4 Faux', consisting of an initial number of 52 Enercon E-126 7.58 MW wind turbines but in April 2012 reduced to a new variant of 47 turbines (deleting one 5-units row in order to meet some ornithological concerns), is considered to be confirmed as such 47 turbines wind farm in 2012. This E-126 wind farm is situated between Juniville and Machault, at the southern side of the French Ardennes, near Reims.  Project developer is a company named Windvision.
Austria: Potzneusiedl 
Two E-126 were installed in 2011/2012 at Potzneusiedl, Burgenland.
See also 
- Grenzenlose Windkraft? a 28:30 min German 3Sat movie on the E-126 Estinnes windfarm construction
- http://www.enercon.de/en-en/752.htm Grid integration & Wind farm management
- Enercon E126 from official Enercon website
- Summary of existing and planned E-126 wind turbines (based on public available www-info till June 2012)
- Wind farm de Drentse Monden
- Wind farm N33
- Wind farm Krammer
- Wind farm Wieringermeer
- Wind farm Estinnes Status & Real-time power output turbine nr.3
- In depth review Estinnes windfarm (Dutch)
- Belgium inaugurates wind farm with largest wind turbines 30 November 2009
- Panoramio: Windpark Estinnes, Enercon E-126
- Markbygden Wind Farm Sweden to build world's largest windfarm, Ordons News, April 2009
-  2011 Windpark Noordoostpolder (Dutch)
-  Le projet "Le Mont des 4 Faux" (French)
- Flyer (pdf)
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