The materials of wind powered turbines vary in different components. The towers are mainly made of steel and the blades are made of fiberglass, polyester or wood-epoxy. The operating principle of a wind powered turbine is the wind energy system transforms the kinetic energy of the wind into mechanical or electrical energy that can be for practical use.
Wind powered turbines generate electricity for homes and companies. The wind powered turbine subsystems include: a rotor or blades, which transforms the wind's energy into rotational energy, a nacelle containing a drive train, usually including a gearbox and a generator, then a tower to support the rotor, drive train and electronic equipment such as controls, electrical cables, ground-support equipment, and interconnection equipment.
The size of wind powered turbines also depends. The wind powered turbines for land-based wind farms have various sizes, with rotor diameters from about 50 meters to about 120 meters, and with towers of nearly the same size. A 90-meter wind powered turbine that Wind Capital Group might use will have a total height from the base to the tip of the blade of approximately 135 meters. Small wind powered turbines applied for residential and small business uses are smaller. Most of them have rotor diameters of 8 meters or less and would be installed towers of 40 meters high or less.