Senvion

Line

• Andreas Nauen, CEO
• Tulsi R. Tanti, Chairman

Senvion, formerly REpower Systems, a German wind turbine manufacturer that is a subsidiary of Suzlon Group. The company is engaged in the development, distribution, manufacturing, installation and maintenance of wind turbines. To date, the company has built about 5,000 plants, most of which have ranges of 1.5 and 2 MW.

In 2007, the Indian wind turbine manufacturer Suzlon made ​​together with the Portuguese Martifer Group a successful takeover bid for REpower. 2009 separated the due share from falling below the required free float from the Nasdaq and the ÖkoDAX. For fiscal year 2011/2012 Suzlon held 95.16 percent of the votes in the Hamburg company. With a squeeze-out the minority shareholders were zwangsabgefunden in October 2011, which REpower or Senvion is now fully controlled by Suzlon.

In 2014, REpower Systems has changed its name in Senvion because the license to use the previous name expired. Licensor was the former Raetia Energie AG, which has since renamed itself in Repower AG.

• 2.1 Senvion in Germany
• 2.2 Senvion International

• 3.1 Overview old plants onshore
• 3.2 Overview onshore facilities 3.2.1 Protec MD series
• 3.2.2 3.XM series

• 3.3.1 5M
• 3.3.2 6.2M126
• 3.3.3 6.2M152

• 4.1 Beatrice Demonstrator Project
• 4.2 Thornton Bank
• 4.3 alpha ventus
• 4.4 Ormonde
• 4.5 North East

History

The Group was formed in 2001 from the merger of the company " Jacobs Energy", " BWU " and " pro pro energy systems " ( a subsidiary of aerodyn and Denker & Wulf ), including the Husum Shipyard ( short HSW ). The roots of this company go but back to the year 1994, when the first self-developed 500 - kilowatt system was presented. This was in the following years through a collaboration between Jacobs and energy, which was founded in 1996 BWU developed into a 600 - kW system (type 43/600 ). Previously, the configuration and operating company Denker & Wulf had been founded in Sehestedt in 1995. This was, however, sold to the interim consolidated financial affiliation with REpower, in 2004.

Acquisition in 2007

On 22 January 2007 expressed the then largest shareholder of REpower, the French nuclear group Areva, the takeover request in the Hamburg company. Areva announced that it had submitted a bid to come into the possession of at least fifty percent of the shares. Then countered on 9 February 2007, the Indian wind energy company Suzlon Energy with the support of the Portuguese Martifer Group with a counter offer. This was followed in the months following a takeover battle between the two companies with the following commands:

This bidding war ended on 24 May 2007 by the announcement of the French group, to offer no further offers more to the shareholders. Instead, said Areva to want to support REpower further and to keep its share first. This waiver came from a range of opponents to make Areva to its preferred provider of power distribution and transmission.

Suzlon took over the Hamburg-based company for 1.3 billion Euro and now controls it with a stake of 95.16 per cent. In the free-float are 4.84 percent. The leading financiers of Suzlon in the takeover battle were the Dutch banking group ABN AMRO and the State Bank of India and ICICI Bank. Purpose of the takeover was the desire of the CEO of Suzlon, Tulsi R. Tanti to make Hamburg a development center for the wind energy industry.

The data published before the takeover battle plans to open a manufacturing facility in Osterronfeld among others, have been delayed by the takeover poker first. Originally it was considered the construction of the production facility, whether the office should also be moved to Osterronfeld. Meanwhile, the development ( TechCenter ) was settled in Osterronfeld instead of the new production facility.

Chronology

Structure

Senvion in Germany

In Germany Senvion is active in six locations. The head office is located at the corporate office of the company in Hamburg. The development centers are located in Osnabrück, Lower Saxony and Schleswig-Holstein's Osterronfeld. Production and service sites are the Brandenburg Trampe, the North Frisian county town of Husum and Bremerhaven. In addition Husum is the central sales department.

New sites:

On 11 December 2007, REpower celebrated the establishment of a new factory for offshore wind turbines in Bremerhaven's Lunehafen. One particular feature was a sole that makes the hall floor for heavy loads viable, so that can support the weight of the nacelles. In the new factory blades and Senvion 5M and 6M turbines are produced in series. Bremerhaven is the offshore manufacturing and logistics center of Senvion. On 8 October 2007, a new production hall was inaugurated in the north-east of Berlin located site Trampe. The two existing each 55 meters long halls of the company have been extended by one additional cultivation of 35 meters in length. So far, the production had to ramp to a capacity of around 150 wind turbines per year; in the advanced test facilities may be made ​​weekly six wind turbines of 2 MW class, bringing the annual production capacity will double.

On 17 July 2007, REpower has established together with the rotor blade manufacturer Abeking & Rasmussen Rotec (A & R) is a joint venture for the production of its own offshore rotor blades for wind turbines. The joint venture was approved by the REpower Supervisory Board in May and is to produce the rotor blades developed by REpower. Senvion is involved in the company PowerBlades GmbH to 51 percent and SGL Rotec to 49 percent. In Bremerhaven, was created for the production of rotor blades own factory in close proximity to a production hall for the offshore Senvion 5M and 6M Senvion. With the blade production was started in 2008.

In March 2008, a Repower 5M on a new ocean-going basis ( jacket foundation ) was the company WeserWind built a subsidiary of GMH Group at the northern port in Bremerhaven. After completion of the test phase, this design is in the offshore operation (eg Global Tech I) are used.

On 12 July 2007, REpower has signed an agreement with the municipality Osterronfeld and the Economic Development Corporation of Rendsburg- Eckernförde ( WFG ), which reaffirms the intent of the settlement enterprise in the community on the Kiel Canal. The community and WFG are committed to provide REpower within one year required for the construction of production facilities and an administrative building space available and compared to the current district port Rendsburg to create a heavy duty terminal at the port, the suitable for the transport of offshore wind turbines here is. REpower undertakes to apply for the construction of an administrative and production building and build if the legal planning requirements are met. In the summer of 2009, started the construction work.

The estimated cost for the new port, including the development of an industrial park adjacent to the quays are expected to 15 million. Euro amounts. For the technical features of the new port with cranes, vehicles, a heavy-duty pontoon and a plant is around 17 million euros are estimated. The investment of REpower will be in the first stage at about 16 million euros.

Senvion International

Internationally, the Group is represented by various subsidiaries, joint ventures and licensed affiliates in Australia, Belgium, China, France, United Kingdom Italy, Canada, Poland, Portugal, Spain, Sweden and the United States around the world.

Plant types

Overview old plants onshore

In reference report of REpower / Senvion are even more wind turbines from the prehistoric times of the Group:

Overview onshore facilities

Protec MD series

The early years of Repower are strongly associated with this 1500kW wind turbine. Developed by " pro pro power systems " this plant has been awarded many other companies as a license to have companies beginning: Gamesa, transit countries, south wind ( Nordex ) Jeumont, LVDF (Les Vents de France SA ) awarded. 2004 REpower has awarded a license to Dongfang Electric Corporation (DEC ).

3.XM series

The two variants of the 3.XM series are wind turbines, which are designed for the onshore market. Two prototypes of the 3.4M104 were built in late 2008 and early 2009 in a wind park at Husum, Schleswig -Holstein. By the end of January 2010 eight plants were built in Schleswig -Holstein. In developing the 3.XM series the Senvion has drawn on its experience in the design of the MM series as well as the multi-megawatt turbine 5M and combines the advantages of each plant types. Currently the 3.4M104 with tower heights of 78-128 meters and the 3.2M114 with a tower height of 93 m is available.

The rotor blades of the 3.4M104 have a length of 50.8 meters, made ​​of glass fiber reinforced plastic and are produced by the Senvion subsidiary PowerBlades in Bremerhaven. The rotor blades of the 3.2M114 with a length of 55.8 meters are manufactured by SGL Rotec in Lemwerder.

Technical data of the Senvion 3.4M104

• Hub height 78-80; 96.5 to 100; 128 m
• Rated power 3,370 kW
• Rotor blade length 50,8 m
• A rotor diameter of 104 m
• Rotor area 8,495 m²
• Rotor speed from 7.1 to 18.8 / min ( 16 %)
• Closing speed 3.5 m / s
• Rated wind speed 13.5 m / s
• Shutdown speed 25.0 m / s
• Electrical rotor blade adjustment
• Double-fed asynchronous
• Three-stage Planeten-/Stirnradgetriebe
• IEC type class 1a

Technical data of the Senvion 3.2M114 (August 2010):

• Hub height of 93 m
• Rated power 3,170 kW
• Rotor blade length 55.8 m
• A rotor diameter of 114 m
• Rotor area 10,207 m²
• Rotor speed 12,6 / min ( 16 %)
• Closing speed 3.0 m / s
• Rated wind speed 12.0 m / s
• Shutdown speed 22.0 m / s
• Electrical rotor blade adjustment
• Double-fed asynchronous
• Three-stage Planeten-/Stirnradgetriebe
• Type class IEC 2a

Technical data of the Senvion 3.0M122 (June 2013):

• Hub height of 139 m
• Rated power 2,970 kW
• Rotor blade length 59.8 m
• A rotor diameter of 122 m
• Rotor surface 12.690 m²
• Rotor speed 11,25 / min ( 15 %)
• Closing speed 3.0 m / s
• Rated wind speed 11.5 m / s
• Shutdown speed 22.0 m / s
• Electrical rotor blade adjustment
• Double-fed asynchronous
• Three-stage Planeten-/Stirnradgetriebe
• IEC Type Class 3a

Overview offshore installations

5M

The 5M prototype was installed in 2004 in Brunsbuttel and dined mid-November 2004 for the first time electricity into the public grid. The plant has a nominal capacity of 5 MW and a rotor blade length of 63 m with a rotor diameter of 126 m. At the time of commissioning, the 5M was the largest and most powerful wind turbine in the world. The leaves were made by LM glass fiber, made ​​of glass fiber reinforced plastic and contain carbon- fiber-reinforced elements. The plant is designed for offshore wind farms and to produce approximately 17 million kWh per year. The tower height is 120 m, the total height of 183 meters with it.

Technical data of the Senvion 5M (December 2009):

• Hub height of 120 m
• Rated power 5,075 kW
• Rotor blade length of 61.5 m / rotor diameter 126 m
• Rotor area 12,469 m²
• Rotor speed from 6.9 to 12.1 / min ( 15 %)
• Closing speed 3.5 m / s
• Rated wind speed 13.0 m / s
• Nacelle dimensions 6 m / 6 m / 18 m ( H / W / L)
• Tower mass 750 t
• Weight of nacelle 290 t ( without rotor )
• Rotor mass 120 t ( was installed in one piece)
• Electrical rotor blade pitch ( pitch control )
• Double-fed asynchronous
• Combined planetary spur gear with a ratio of 97:1 and 63 t weight

6.2M126

The Senvion 6.2M126 ( original name: REpower 6M ) based on the technology of the 5M range, has a rated output of six megawatts and a rotor diameter of 126 m as the 5M. The first three wind turbines of this offshore - type with a hub height of 100 m were built on the German - Danish border in March 2009 Bürgerwindpark Westre. The rotor blades with a length of 61.5 meters came as a heavy load directly from Denmark. The future series production takes place in a new assembly hall of the wind power company in Bremerhaven, which is designed for the production and direct shipment of more than 80 engine nacelles and hubs per year.

Technical data of the Senvion 6M:

• Hub height: Onshore: 100 m
• Offshore: 80-95 m (location dependent)

• Onshore: IEC IB, IEC IIA
• Offshore: IEC IB, IEC REpower S -Classes, DIBt 4

6.2M152

The Senvion 6.2M152 (then REpower 6.2M152 ) was presented to the public in November 2013. In the complex there is a further development of the existing 6.2M126, which is equipped with an unchanged nominal output of 6.15 MW with a larger rotor diameter of 152 meters now. In addition, the drive train has been revised. Compared with the previous model is to allow the energy yield increased by 20 % (at an annual average rate of 9.5 m / s). The prototype will be built end of 2014 at a country location in Northern Germany.

Significant ( offshore ) wind farms

Beatrice Demonstrator Project

Two 5M turbines are located near the Beatrice oil field, 25 miles off the east coast of Scotland in the Moray Firth, has been installed in a water depth of about 40 meters. The hub height is 89 m there, as foundation structure (picture above) is the so-called " jacket foundation " is used. The demonstration project is part funded by the EU " DOWNVInD " project, with a total of 30 million euro, Europe's largest research and development program in the field of renewable energy. Talisman Energy (UK ) and Scottish & Southern Energy (SSE ) are the coordinators of the project, in which a variety of research and development organizations from all over Europe are involved. Senvion is the exclusive equipment supplier.

The plant numbers 3 and 4 were built in late 2006 on the offshore wind turbine test site Cuxhaven. The tubular steel towers used there, the wind turbines reach hub heights of 117 m.

Thornton Bank

In the wind farm Thornton Bank, 28 km from the Belgian coast, was completed the construction phase of six 5M wind turbines in September 2008. The plants were placed in 12-27 m deep water. In the development of phases 2 and 3 a total of 48 turbines of the type 6.2M126 been added to the wind farm. The total installed capacity of all plants 325 MW Thornton Bank is.

Alpha ventus

The first offshore wind farm in German waters, alpha ventus called, is located approximately 45 km north of Borkum Island at a water depth of 30 m. Of the total of 12 wind turbines REpower 5M supplied six. The wind farm will produce enough energy for 50,000 homes. The location provides good conditions for an offshore wind farm, as the wind speed here in average 36 km / h is (force 5). Overall, experts expect 3800 full load hours per year.

Ormonde

When Ormonde offshore wind farm is a wind farm in the Irish Sea, the power company Vattenfall. The installation of the park took place 10 km off the coast of Barrow-in- Furness. With initial work was begun in 2009. Since August 2011, the wind turbines power feeding into the grid, final completion of the park will take place in late 2011. The park consists of a total of 30 5M. Thus, the total size of the park is 150 MW, assuming a power output of 500 gigawatt hours per year. The total size of the park is 8.7 km ².

Nordsee Ost

The Nordsee Ost wind farm is being built by RWE Innogy. The project site is located 35 km north of Helgoland and 40 km west of Amrum. There are 48 × 6 MW 6M built. The water depth is 22-26 m. Planning permission was granted in June 2004, construction is September 2011, first feeding into the German high or extra high voltage network is 2012 and the entry into service in 2013.