A hydroelectrically-charged agricultural irrigation prime mover (100) includes: a support (105); a plurality of wheels (101, 102) coupled to the support; a fluid supply pipe (120); an electric drivetrain; and a hydroelectric charging system. The electric drivetrain includes: a battery pack (132); a motor (133) electrically connected to the battery pack; and a gearbox (134) connected to the motor and configured to rotate the fluid supply pipe. The hydroelectric charging system is configured to charge the battery pack.