Modeling the interactions between turbines in a wind tunnel. Chair of Wind Energy, Technical University of Munich. (Image: Carlo L. Botasso / TUM) Image is illustrating the press release: "Wind turbines: It’s a group effort"; 14.02.2017. https://www.tum.de/nc/en/about-tum/news/press-releases/detail/article/33738/. May be freely used by reporters, with proper attribution