About RAVE

The research initiative for the first offshore wind farm project in Germany

In the year 2006: 4 years after the Publication of the strategy of the Federal Government for the use of wind energy at sea, no wind energy plant in Germany has got wet feet yet. The Federal Government decides to support offshore wind energy through a research initiative and the construction of an offshore test field: RAVE is born.

In order to advance offshore wind energy in Germany, RAVE starts with four goals:

  • Proof of the offshore suitability of the 5 MW turbines
  • Further development of the system technology
  • Investigation of open questions about offshore wind energy use
  • Expansion of research potential in Germany

These goals have been achieved for a long time: The 5 MW asset class is turning over a large proportion of all offshore wind farms. The system technology has been decisively developed and now the 7-10 MW turbines are in the starting blocks. In more than 30 research projects, knowledge has been developed and solutions found for a wide range of open issues in offshore wind energy utilization. The research landscape in Germany is large, diverse and internationally recognized.

Today, the focus is on new goals: reducing the cost of offshore wind energy and reducing technical risk. This brings new research questions to topics such as optimization of operation and reliability in the foreground. In addition, the vast wealth of data collected in RAVE enables many fundamental scientific questions to be dealt with.



  • 2002 Federal Government Strategy on Wind Energy Use at Sea  


  • 2005 The offshore foundation is founded and acquires the project rights for the offshore test field   


  • 2006 The operating company DOTI is founded by EWE, E.ON and Vattenfall   


  • 2007 The Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) launches the RAVE research initiative (Research at alpha ventus). The first RAVE projects start work.     


  • 2008 Launch event of the RAVE initiative. Planning of the measurement technology for the RAVE projects begins. The offshore grid connection will be established and the offshore substation will be erected. 


  • 2009 All 12 offshore wind turbines are installed. RAVE measuring systems for AREVA Wind M5000 are put into operation.      


  • 2010 The offshore wind farm alpha ventus officially opens. RAVE measuring systems are put into operation for REpower 5M.


  • 2011 RAVE Film publishes 'Offshore Park Research - RAVE Research at alpha ventus'    


  • 2012 First Offshore R & D Conference, 7 research projects publish their results     


  • 2015 Second Offshore R & D Conference, Publication of the RAVE book 'Sea Wind Power'      


  • 2018 Third Offshore R & D Conference 

Wind farm alpha ventus

 First German offshore test field

 The offshore test field alpha ventus was built in 2009 as the first German offshore wind farm with a coastline distance of 60km and water depth of 30m. It consists of six 5v wind turbines from Senvion, six M5000 wind turbines by Adwen and one offshore substation. The research platform Fino1 with its 100 m high measuring mast is located in the immediate vicinity of the wind farm to the west.  

RAVE - Coordination & Measurements

Organization of the research cooperation at the alpha ventus test center and central implementation of the measurements in the context of the RAVE research projects The coordination of RAVE research is in the hands of Fraunhofer IWES. This includes coordinating the diverse research projects among each other, but in particular also coordinating research with the wind farm operator and the manufacturers of the plants. RAVE carries out an extremely extensive measuring program for all research projects. In total, more than 1200 measurement channels are recorded, with all measurements taken centrally in the hands of the BSH.


Fraunhofer Institute for Wind Energy Systems IWES

Am Seedeich 45

D-27572 Bremerhaven