Pilot project in Belgium on balancing energy successfully completed

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164 K

  Enercon / published 09.2015
Windblatt (EN), Issue 03/2015, page 7

Key messages
* A follow-up pilot project to the 7MW-WEC-by-11 project in Belgium named “R2 Wind” at the Estinnes wind farm demonstrated the technical feasibility for wind energy converters to vary output and to largely compensate for fluctuations in the power grid * During the two months project phase, the Estinnes wind farm was part of the Transmission System Operators secondary reserve and provided the grid with up to 10 MW of negative balancing power upon demand * This required the wind energy converters to respond in real time to desired values transmitted by ELIA and to alter  their active power output continuously by adjusting their rotor blades *

First E-126 for German wind park Ellern/ Hunsrück (DE)


  Sonne Wind & Wärme
Renewable Energy Magazine "Sonne Wind & Wärme", Issue 02.10.2012 14/2012, page 21

Key Messages
*  First Enercon E-126 type WEC installed during October 2012  * WEC to be operational within 2012 * In total five E-126 type WECs will be installed in this wind park *

E-126/ 7,5MW for German racing course “Lausitzring” (DE)

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640 K

  Enercon / published 09.2012
Windblatt (DE), Issue 03/2012, page 14 - 15

Key messages
*  WEC fully installed by June 2012  * Official start-up planned by mid of September 2012 * WEC operator: EuroSpeedway Verwaltungs GmbH * Significant soil compacting required to enhance its bearing capacity * 17 GWh annual yield expected *

Revision of reserve requirements following wind power integration in island power systems (EN)



KU Leuven, Electrical Engineering Department ESAT-ELECTA / available online
Elsevier Ltd., Renewable Energy, Issue #50 (2013) pages 268 to 279 (EN)

Key messages
* This contribution studies the impact of wind power on the operation of island power systems. The analysis focuses on the available flexibility of thermal generation to balance wind power variations and prediction errors. This issue is highly relevant for small and medium sized islands where interconnections are absent and the smoothing of variations is limited due to a small geographical surface. The main objective is to determine if additional reserve requirements are necessary for ensuring reliable wind power integration in an isolated transmission system. In this context, a case study is performed for Cyprus, a medium-sized island, where wind developments towards 2020 schedule an installed capacity of 300 MW, reaching 7% of the annual electricity consumption. Simulations with installed wind power capacities up to 400 MW show that the current available flexibility in the generation system is inadequate to balance real-time wind power fluctuations and prediction errors. Consequently, large amounts of wind curtailment and demand shedding may be expected. Therefore, current reserve requirements should be revised, in order to reliably facilitate wind power into the system. Furthermore, the impact of introducing natural gas for electricity generation in Cyprus on the reserve requirements, following wind power integration, is examined.*

Multimegawatt at the Dyke: First E-126 Installed in the Netherlands (DE)

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  589 K


Enercon / published 07.2012
Windblatt (DE), Issue 02/2012, page 15

Key messages
* First E-126 installed close to the small Dutch town of Medemblik a few metres behind the dyke to the Ijsselmeeres * The wind site named “The Ambtenaar” offers excellent wind conditions and therefore has model character for other Dutch projects (WIP comment: such as Noordoostpolder with a total of 38 E-126 planned) * The installation of the machine (WIP comment: nacelle, generator, rotor blades) was done in merely 12 days, including times without crane operation because of strong wind * This turbine is ideally suited for the Dutch needs which are to best exploit the few sites available for wind turbine installations: it is the WEC which offers the maximum yield per area of ground used of all WECs on the market *

Close up - the E126, still the world's biggest turbine

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  103 K


Eize de Vries, Windpower Monthly / Internet publication of 27.06.2012

Key messages
* by the end of June 2012 34 E-126 units were operational * Air cooled generator: up until around 5MW output level the generator relies on natural air-cooling whereby cold air enters the nacelle through a circular gap between the nacelle bottom and tower top. It is pulled through the generator and leaves the nacelle again enabled by a circular gap between the rotating spinner and nacelle cover. With increased output, but depending upon ambient temperature and other variables, electric fans in the nacelle floor add to the cooling system's performance *

Enercon to build biggest E-126 wind farm to date (EN)



Eize de Vries, Windpower Monthly / published 05.2012

Key messages
* In late 2012 Enercon will lay the first foundations for 38 wind turbines of the type Enercon E-126 in The Netherlands at a wind farm called Windpark Noordoostpolder * This will be part of a 86 turbine wind farm *

New E-126 Wind farms - Enercon erects first E-126 in Austria (EN)

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  551 K


Enercon  / published 03.2012
Windblatt (DE), Issue 03/2011, pages: 16-17

Key messages
*  The Austrian utility Burgenländische Elektrizitätswirtschafts-Aktiengesellschaft (BEWAG) and its windenergy subsidiary Austrian Wind Power (AWP) have installed two Enercon E-126/ 7,5 MW WEC in Potzneusiedl in Austria  *  The expected yield is 14,2 GWh per WEC and year  *  Further windparks with E-126 WEC are under construction or were just finalised in Germany: (a) the windpark Altentreptow is under construction (remark of WIP: this wind park will comprise 15 E-126 WEC as mentioned in the Renewable Energy Magazine "Neue Energie", Issue 08/2011, below); (b) the wind park Stößen with three E-126 is operational; every WEC to produce 13,7 GWh per year; (c) the wind park Georgsfeld with three E-126 is operational; every WEC to produce 18,0 GWh per year  *  In total nearly 40 E-126 were meanwhile installed or are currently being installed  *  Areas which are normally not considered as large enough for wind power exploitation increase in value because a relevant power can be installed with the E-126 type WEC  *

Estinnes wind farm officially opened (EN)

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392 K


Enercon / published 10.2011
Windblatt (EN), Issue 02/2011, pages: 14-15

Key messages
* inauguration of windfarm was celebrated on 18.06.2011 * by 2011 the Enercon E-126 WEC is the most powerful wind turbine in the world * Estinnes is largest project with Enercon E-126 world wide * the E-126 is not only suited for installation at near-shore sites but also for installation at inland sites with high wind potential * All eleven WECs operational since end of September 2010 * Annual yield of 187 GWh expected * a new logistic concept was developed for WEC installation * the grid connection is realised with latest power conversion technology *

First wind farm with giant turbines (DE)


Neue Energie / published 08.2011
Renewable Energy Magazine "Neue Energie", Issue 08/2011, page 25

Key messages
* By 2012 the first German wind farm with 7,5 MW class Enercon E-126 type Wind Energy Converters will be installed close to Werder in the German state Mecklenburg-Vorpommern  (nearest distance to Baltic Sea around 55 km)  *  The windpark shall comprise 15 Wind Energy Converters  *  The low rotation speed of the rotors results in an optimal reflexion behaviour for radar systems - a feature which was of relevance for obtaining an installation permit  *

Yield and costs of Enercons E-126 (DE)


Neue Energie / published 05.2011
Renewable Energy Magazine "Neue Energie", Issue 5/2011, page 54

Key messages
* E-126 installed at the Rysumer Nacken close to Emden at the coast of Germany produces 21 GWh per year * E-126 installed at inland site close to Magdeburg in Germany shall produce 14 GWh per year * Costs of WEC are around 11 mio. EUR *

Enercon up-dates Estinnes wind turbines to 7,5MW (DE)


Sonne Wind & Wärme
Renewable Energy Magazine "Sonne Wind & Wärme", Issue May 2011 7/2011, pages 87 and 89

Key messages
* During the EWEA 2011 Wind Energy Conference in Brussels Enercon offered visits to the wind park Estinnes * Enercon states that all eleven E-126 at Estinnes are fully operational since summer 2010 * Nine of these 11 WEC shall be upgraded to 7,5 MW within the next months * The up-grade includes an adaptation of the cooling system *

Enercon installs 7,5MW wind turbine of the type E-126 at German inland site close to Magdeburg-Rothensee (DE)

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347 K


Enercon / published 01.2011
WINDBLATT (DE), Issue 01/2011, page: 6

Key messages
* 7,5MW version of E-126 installed * Inaugurated on 27.01.2011 * Inland installation site close to manufacturing facilities of Enercon at Magdeburg-Rothensee * The wind turbine shall generate approximately 14 mio. kWh per year *

Technical specification of Enercon E-126 turbine with 7,5MW, including power curve (EN)

pdfFile Size
319 K


Enercon / published 07.2010
ENERCON Wind energy converters, Product overview; pages 20 and 21

Key messages
* power curve in steps of 1m/s from 0 to 25 m/s * 7,5 MW from 16 m/s *

Multi-MW class - E-126 evolves to 7,5MW machine (DE)

411 K


Enercon / published 01.2010
WINDBLATT (DE), Issue 01/2010, page: 8

Key messages
* With few changes the E-126 can be safely operated at 7,5 MW * Among these changes: optimized air cooling system and air flow * WEC control monitors loads and reduces extremes via a suitable pitching of the rotor blades *

E-126 inauguration in Estinnes - Piebalgs: onshore wind energy plays relevant role in EU development scenarios (DE)

491 K


Enercon / published 01.2010WINDBLATT (DE), Issue 01/2010, page: 9

Key messages
* Five of eleven E-126 installed * E-126 is the worlds most powerful wind turbine * inaugural event celebrated on 25.11.2009 in Estinnes * Guest: outgoing EU Commissioner Andris Piebalgs * Power electronics of E-126 is the most advanced currently available in the sector * the grid can be stabilised in a way it was possible only for conventional power plants before * Project 7MW-WEC-by-11 co-financed by European Commission * By 2010 most of the E-126 in Estinnes can be operated at above 7 MW *

Editorial (DE)

388 K


Enercon / published 01.2010WINDBLATT (DE), Issue 01/2010, page: 3

Key messages
* Example for maturity of on-shore wind energy exploitation in Estinne * soon 11 E-126 with a nominal capacity of around 70 MW will be operational *

New high capacity crane of ENERCON first used in Emden / (DE)

432 K


Enercon / published 01.2010WINDBLATT (DE), Issue 01/2010, page: 5

Key messages
* ENERCON does now operate an own Demag CC9800 crawler crane since end of November 2009 * it lifted the hub with the inner blade segments of the E-126 at Larrelter Polder / Emden weighting 340t * complete WEC installation was realised within 2,5 months * E-126 at Larrelter Polder / Emden to produce 20 GWh per year *

Demag develops newer and bigger crane for Sarens (EN)

306 K


Sarens / published 10.2009
Sarens / published 10.2009Heavyweight News from Sarens, Issue 13, first topic

Key messages
* Lifting rotor consisting of hub and three rotor blades of a total weight of 350t to a hub height of 135m * Terex-Demag CC9800 crawler crane is a mobile crane with short mobilization time * boom length 156m * On-site inauguration at Estinnes on 14.06.2009 *

E-126 in action (EN)

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9.262 K 


Renewable Energy World by Eize de Vries / published 09.2009, pages: 97 - 105

Key messages
* Wind farm completion expected for Q1 2010 * design life-time significantly longer than 20 years * rating of commercial E-126 over 7MW * E-126 to generate 187 GWh a year at Estinnes * wind park utilization factor expressed in MW/km² increases by a factor 2,3 compared to applying state-of-the-art 2 MW class WEC * advanced power electronics to stabilize grid * 198,5m total height * 59m length rotor blade in two sections: 35m outer section of glassfibre-reinforced epoxy that is bolted onto a 24m inner metal section * cast iron steel adaptor between pitch-bearing and composite blade material * pre-assembled machine housing can now be put on top of tower in a single lift * 12m diameter air-cooled generator with four independent segments * E-126 cooling concept includes aluminium nacelle cover * 132m tower manufactured of prefabricated concrete segments * diameter of tower foot 14,5m * assembly and hoisting area 100 x 60 m² * foundations including a gravel column civil engineering solution consists of more than 1.400 m³ concrete and over 120 t of reinforcing steel * 400 hour test run prior to commissioning * Innovative project part co-financed via the European Commission FP7 programme *

Installation of first E-126 nacelle at the harbour of Hamburg (DE)

409 K


Enercon / published 06.2009
Enercon / published 06.2009WINDBLATT (DE), Issue 02/2009, page: 2

Key messages
* First installation of E-126 rotor blades utilising Terex-Demag CC9800 crawler crane from Sarens (rotor hub including metal segments of rotor blades) *

Installing giant windmills (EN)

pdf Filesize
506 K


Enercon / published 12.2008
Enercon / published 12.2008WINDBLATT (EN), Issue 04/2008, pages: 12 - 13

Key messages
* relatively uncomplicated transport of divided rotor blade * Blade assembly within one and a half days * Rotor of generator weighting 140t * Terex-Demag CC9800 crawler crane from Sarens to hoist entire rotor hub in Estinnes * Foundation consisting of more than 1.400 m³ of concrete and more than 120 tons of steel *