The T.A.G. (Trailer Auxiliary Generator) System from Green Road Energy Inc. is designed to provide a charging platform for any auxiliary power need on trailers, such as liftgates, motorized pallet movers, lights, pumps, etc. Designed as a horizontal-axis wind turbine, the setup allows for the wind developed as the truck and trailer are moving to be captured by the high-solidity blade which spins the generator. The T.A.G. System is designed to be installed under the trailer, making the process of battery charging self-contained to the trailer as there are no connections or cables to the cab. The T.A.G. System is available in 12V, 24V, and 48V systems with amp output at 25-50+ (generator dependent).