To provide "a power generation device having a bent shaft with arm weights" easy to maintain and manage, and inexpensive and easy to build at a desired site near an electricity usage site on the resource-exhausted earth, for generating power with efficient rotating force when input.

At this time when there is a major worldwide concern that it is difficult to acquire energy from natural resources, the development of "the power generation device having the bent shaft with the arm weights" which uses only mechanical force without consuming resources and which can be installed anywhere on the earth should be executed in public and private cooperation.