A motive power system includes a first energy storage, a second energy storage, an actuator, an internal combustion engine, an electric generator, a power transmission circuit, and circuitry. The circuitry is configured to control the power transmission circuit to charge at least the second energy storage via the electric generator. The circuitry is configured to control the power transmission circuit to charge the first energy storage with electric power supplied from the second energy storage when a first charge rate of the first energy storage is lower than a first threshold.