Sandia National Laboratories, a US Department of Energy contractor, is carrying out critical research into wind energy at their Scaled Wind Farm Technology (SWiFT) facility in Lubbock, Texas. Part of that research involves a newly designed rotor blade, which will be 3D printed and implemented in a series of tests that will help determine if the problems caused by wind turbines' wakes interfering with each other can be solved. The blade is also intended to show that 3D printing is a viable form of manufacturing for wind turbine rotor blade molds. Read more at 3DPrint.com: http://3dprint.com/125090/3d-printed-rotor-blade/