To provide a generation system that can readily obtain a variety of powers at a low cost.

This ring-shaped generation system is characterized by comprising: a vertically rotating round ring body 1; a plurality of generators 2 arranged on a ring in a round shape; a motor 3 that vertically rotates the ring body; and an electricity receiving device 5 comprising a battery that feeds power to the motor and charges and discharges the generated power of each generator via wiring 4.