New Fraunhofer Institute for Wind Energy (IMAGE) Fraunhofer-Gesellschaft Caption The rotor blades of wind energy turbines can be tested in a 85-meters-long and 25-meters-high building. It was constructed especially for this purpose. Credit © Fraunhofer IWES Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.