Abstract: A wind turbine having a large circular rotor wheel formed of concentric inner and outer rings with adjustable elliptical blades extending therebetween. The inner and outer rings are rotatably supported in a vertical plane to rotate about a horizontal axis by circumferential arcuate bearing supports connected by support arms to yaw mechanisms on a support tower which pivot about a vertical axis, and the outer ring is partially supported on the top of a horizontal rotatable revolving track which revolves around the tower and drives power wheels that operate water pumps, air pumps, and/or or electrical generators. A load shedding mechanism allows the power wheels to be selectively engaged or disengaged from the pump or generator load depending upon the available wind power to maintain rotation of the circular rotor wheel and horizontal rotatable revolving track without the load.