Increasing rotor blade length increases its swept area, thereby increasing the amount of captured energy. But larger blades add significant weight to a turbine. So reducing wind-structure weights through composite materials is essential to improving overall efficiency. HyperSizer Structural Sizing Software can assist. It is a tool for engineers who must analyze and optimize composite wind blades. The software, from Collier Research Corp., integrates with FEA, and can update a CAD model, to help rapidly design a lightest-weight structure, provide insight into design innovation, and produce the most readily manufacturable design, all in less time than previously possible. The software has significantly reduced weight on aerospace programs with rapid analysis and composite optimization. In fact, HyperSizer has helped aerospace users cut weight of some structures by 20%.