This hub dynamo (10) is provided with: a rotor having a body section at the inner peripheral surface of which a permanent magnet is formed; at least two stator units (20A, 20B) that are disposed at the inside of the body section and that are a first stator unit (20A) having a first coil (93a) wound in a cylindrical shape, and a second stator unit (20B) having a second coil wound in a cylindrical shape; and a vehicle wheel axle (11) that is provided in a manner so as to penetrate the inside in the radial direction of each coil (93a, 93b) and to the outside of which each stator unit (20A, 20B) is fitted and affixed. The first stator unit (20A) has a coupling section to which the second coil (93b) is routed.