FREE Shipping in the US and Canada! This 3000W wind turbine produces up to a 3500W peak output and comes with an MPPT hybrid charge controller. Using 5 patented aerofoil blades, it utilizes a symmetrical and twisted aerodynamic design. The generator housing is made of aluminum alloy and cast with minimal tolerance as well as being sealed with a high quality sealant. Speed control is accomplished using both aerodynamic and electromagnetic braking. The patented rotor is made of a high quality stainless steel rotor shaft and is attached with a permanent neodymium magnet.