Abstract: The present invention relates to a horizontal-shaft/vertical-transmission wind turbine for generating electricity, which may be on-shore or off-shore, with reduced materials and structures in the nacelle, mast and foundation, which moves much of the equipment to the base of the mast, thereby reducing capex, enabling significant reductions in the operation and maintenance costs of the turbines, and reducing the cost of the installed power (installed MW) in a wind farm. The mechanical energy coming from the rotor is transmitted by a vertical shaft system (6) along the mast, which incorporates naval technology, and which is based on platforms (1) to neutralize harmonics and is connected to H/Vst (3) and V/Hmvst (4) transmissions, coupled using contraction and expansion joints (2). In addition to this, the rotor orientation system (YAW control) (29), which is connected to the torque control of the transmissions, the brake control and the blade pitch control, enables the rotor to be properly positioned.