Abstract: An inertia permanent-magnet generator unit includes a body containing a stator structure, multiple pairs of permanent magnets on the stator structure; a rotor structure in the body, a central shaft penetrating a center of the body; multiple rotor blades being disposed to the rotor structure; and multiple troughs with each disposed on a top of the rotor blade in relation to the stator structure; multiple copper coils winding in troughs on tops of those rotor blades; a weight disposed on a rotor blade; and the rotor structure rotating forwardly by inertia to cut magnetic lines of force of the permanent magnets to generate electricity.