Add a renewable charging source that keeps working after the sun goes down. Nature's Generator 150W Wind Turbine complements solar and AC inputs, keeping your generator topped off around the clock. Cast aluminum alloy construction with a powder coating and fiberglass nylon composite blades are built to handle demanding outdoor conditions. It starts producing rated output around 27 mph and can operate safely up to 110 mph, mounting on standard 1.5-inch schedule 40 steel tubing. The turbine ships as a complete electrical system, so once it's mounted, you just connect the cable to your generator and you're charging. For off-grid living where the wind blows as reliably as the sun shines, this turbine rounds out your renewable setup.