Finland-based Oy Windside Production Ltd. is a specialized manufacturer of rugged, high-reliability vertical axis wind turbine systems. Building on decades of aerodynamic research, the company’s distinctive helical turbine design—originally studied and refined for wind energy applications in the late 1970s—represents a significant evolution beyond the classic Savonius concept, incorporating multiple patented innovations to enhance performance and durability. Since its founding in 1982, Windside’s commitment to exceptional build quality, industrial-grade engineering, and responsive customer support has earned the trust of leading scientific and engineering professionals worldwide, establishing the company as a global leader in vertical-axis wind turbine technology.