A skin structure has a skin and a power generation system attached to the skin. The power generation system has a turbine, one or more tubes fluidly coupled to the turbine, and a generator configured to generate electrical power in response to motion of the turbine. The skin structure may form a portion of an outer covering of a stationary structure, such as a building, or an outer covering of a manned or unmanned vehicle, such as a ground or aerial motor vehicle or a marine or submarine motor vehicle.