A rotating electric machine includes a rotor, a stator, a housing, a plurality of control modules and a joining member. The stator includes a stator coil. The housing accommodates both the rotor and the stator therein. The control modules are capable of supplying multi-phase alternating current to the stator coil and rectifying multi-phase alternating current generated in the stator coil into direct current. The control modules include a first control module and a second control module that are arranged adjacent to each other. The first and second control modules are joined, by the joining member, to be in surface contact with each other.