A rotating electrical machine, comprising: a rotor core; a stator core disposed so as to face the rotor core in a radial direction and including a plurality of teeth and a plurality of slots each located between adjacent ones of the teeth; and a concentric coil formed by concentrically winding a wire, and including a slot accommodated portion placed in a slot of the stator core and a first and a second coil end portion projecting in an axial direction from the stator core, wherein of the concentric coil, an axial outer end of one of the first and second coil end portion located on a side facing the rotor core is located closer to the outside in the radial direction than an axial end of the slot accommodated portion located on the side facing the rotor core is, the rotor core includes a cooling medium flow path through which a cooling medium can be discharged toward the one of the first and second coil end portion with rotation of the rotor core; and the cooling medium flow path extends through a rotor shaft engaged with the rotor core, the rotor core, and end plates of the rotor core and opens toward the stator core outward in the radial direction, and is configured to discharge the cooling medium through an opening toward the one of the first and second coil end portion located on the outer side in the radial direction, characterized in that of the slot accommodated portion of the concentric coil, an axial end of the slot accommodated portion located on a side facing the rotor core is located closer to the outside in the radial direction than an axial middle part of the slot accommodated portion located on the side facing the rotor core is, and the slot accommodated portion and the first and second coil end portion are tilted so as to be curved in the radial direction and have a continuously curved shape in a substantially arc shape toward the rotor core along the entire axial length from the outer end of the one of the first and second coil end portion through the slot accommodated portion to the outer end of the other of the first and second coil end portion so that an axial middle part of an overall shape of the slot accommodated portion and the first and second coil end portion is located closer to the rotor core. a rotor core; a stator core disposed so as to face the rotor core in a radial direction and including a plurality of teeth and a plurality of slots each located between adjacent ones of the teeth; and a concentric coil formed by concentrically winding a wire, and including a slot accommodated portion placed in a slot of the stator core and a first and a second coil end portion projecting in an axial direction from the stator core, wherein of the concentric coil, an axial outer end of one of the first and second coil end portion located on a side facing the rotor core is located closer to the outside in the radial direction than an axial end of the slot accommodated portion located on the side facing the rotor core is, the rotor core includes a cooling medium flow path through which a cooling medium can be discharged toward the one of the first and second coil end portion with rotation of the rotor core; and the cooling medium flow path extends through a rotor shaft engaged with the rotor core, the rotor core, and end plates of the rotor core and opens toward the stator core outward in the radial direction, and is configured to discharge the cooling medium through an opening toward the one of the first and second coil end portion located on the outer side in the radial direction, characterized in that of the slot accommodated portion of the concentric coil, an axial end of the slot accommodated portion located on a side facing the rotor core is located closer to the outside in the radial direction than an axial middle part of the slot accommodated portion located on the side facing the rotor core is, and the slot accommodated portion and the first and second coil end portion are tilted so as to be curved in the radial direction and have a continuously curved shape in a substantially arc shape toward the rotor core along the entire axial length from the outer end of the one of the first and second coil end portion through the slot accommodated portion to the outer end of the other of the first and second coil end portion so that an axial middle part of an overall shape of the slot accommodated portion and the first and second coil end portion is located closer to the rotor core.