Abstract: A floating, water current-driven electrical power generation system has a hull supporting one or more paddle wheels. The unit is tethered in a stream or river so that the moving water turns the paddle wheel coupled to an electrical generator. A transmission matches stream flow conditions to the electrical generator. Stabilizing fins on the hull bottom help keep the hull properly aligned in the stream's current. Built-in leg structures are sized to prevent bottoming of the paddle wheel during periods of low water in the stream or river. Mounts are provided for an outboard motor useful for propelling the unit to a desired location. Larger versions of the system may be equipped with a boat mooring facility allowing a boat to propel the unit to a desired position in a stream or river.