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 prototypes of up to 12 MW were built. Turbines up to 15MW are in preparation. In more than 35 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 
  • 2020 10 year anniversary of alpha ventus

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. More information about quality control of RAVE measurements can be found here.


Fraunhofer Institute for Wind Energy Systems IWES

Am Seedeich 45

D-27572 Bremerhaven



Location alpha ventus
Location of alpha ventus ©Erneuerbare Energien
Wind Europe Electric City 2021 RAVE Poster
RAVE Poster Wind Europe Electric City 2021
The first German offshore wind farm alpha ventus
The first German offshore wind farm alpha ventus ©Matthias Ibeler


The partners of RAVE are made up of the alpha ventus participants and the partners of the research projects.

The following partners are responsible for offshore wind farms and offshore wind farms: the German Offshore Test Field and Infrastructure GmbH & Co. KG (DOTI), a merger of EWE, RWE and Vattenfall. SGRE (formerly Senvion, REPower and formerly Adwen, Multibrid, Areva Wind) is in the boat as manufacturers of the wind turbines. The rights to the wind farm are the responsibility of the German Offshore Foundation.

The research projects carried out under the RAVE initiative have been carried out by a total of 60 partners. The RAVE initiative is coordinated by the Fraunhofer Institute for Wind Energy Systems and is carried out by the Federal Maritime and Hydrographic Agency (BSH). The largest research partners are the universities of Hannover, Oldenburg and Stuttgart.


The following overview shows the RAVE partners:

SGRE Deutschland GmbH

Am Lunedeich 156
27572 Bremerhaven


Federal Maritime and Hydrographic Agency (BSH)

Bernhardt-Nocht-Straße 78
20359 Hamburg



Brooktorkai 18
20457 Hamburg


ForWind - Carl von Ossietzky University of Oldenburg
ForWind, Institute of Physics

Küpkersweg 70
26129 Oldenburg


Fraunhofer Institute for Structural Durability and System Reliability (LBF)

Bartningstr. 47
64289 Darmstadt


Fraunhofer Institute for Manufacturing Technology and Advanced Materials (IFAM)

Wiener Straße 12
28359 Bremen


Fraunhofer Institute for Wind Energy Systems (IWES)

Am Seedeich 45
27572 Bremerhaven


Germanischer Lloyd Industrial Services GmbH, (DNV-GL)

Brooktorkai 18
20457 Hamburg


UL International GmbH

Kasinoplatz 3
26122 Oldenburg


UL International GmbH

Contrescarpe 45
28195 Bremen


GL Garrad Hassan Deutschland GmbH (DNV-GL)

Sommerdeich 14b
25709 Kaiser-Wilhelm-Koog


Leibniz University Hannover 
Ludwig Franzius Institute of Hydraulic, Estuarine and Coastal Engineering

Nienburger Straße 4
30167 Hannover


Leibniz University Hannover
Institute of Building Materials Science

Appelstraße 9A
30167 Hannover


Leibniz University Hannover
Institute of Geotechnical Engineering

Appelstraße 9A
30167 Hannover


Leibniz University Hannover
Institute for Steel Construction

Appelstraße 9A
30167 Hannover


Leibniz University Hannover
ForWind Institute of Structural Analysis

Appelstraße 9A
30167 Hannover


OFFIS e.V. Institute for Information Technology

Escherweg 2
26121 Oldenburg


University of Stuttgart
Institute of Flight Mechanics and Control

Pfaffenwaldring 27
70569 Stuttgart


University of Stuttgart
Institut of Aircraft Design
Stuttgarter University Chair for Wind Energy (SWE)

Allmandring 5B
70569 Stuttgart