Multi-rotor vertical axis wind turbine

A multi-rotor vertical axis wind turbine, comprising:

• a lower frame and an upper frame, each of frames being polygonal and defining vertices;
• a plurality of support arms, each of the support arms having a proximal end and a distal end, wherein the proximal end is nonrotatably attached to and extending from each of the vertices of the upper and lower frames;
• a plurality of vertically oriented rotors, each of the vertically oriented rotors being rotatably mounted on the distal end of each of the support arms, the rotors being positioned at the vertices of the frame in order to reduce wind shadow effect, each of the rotors having a rotor shaft and at least one blade attached to the shaft, the at least one blade being configured for catching the wind to rotate the rotor, wherein each one of the at least one blade being helically wound about the rotor shaft from an upper end to a lower end;
• a single generator having a rotatable armature shaft extending therefrom, wherein the single generator is centrally positioned so that the armature shaft defines a central axis extending through the upper and lower frames;
• and
• a plurality of endless belts, each of the endless belts connecting a corresponding rotor to the armature shaft, so that the rotors independently drive the armature shaft to rotate in order to generate electricity.