Abstract: A system utilizes conventional sail technology to greatly increase the wind energy captured at modest cost. The use of a large area collector for wind energy, such as a sail, allows the conversion of wind kinetic energy into pressure so as to be further converted into mechanical or electrical energy in a much smaller turbine than in the conventional wind mill configuration. The collector is characterized by a deployed condition and a furled condition. In the deployed condition, a plurality of flexible membranes of the collector are deployed over an entirety or a portion of a roof. In the furled condition, plurality of flexible membranes are furled.

Abstract: An invention is presented which greatly improves the potential for individual home wind energy conversion. The system utilizes conventional sail technology to greatly increase the wind energy capture at modest cost. The use of a large area collector for wind energy, such as a sail, allows the conversion of wind kinetic energy into pressure to be further converted into mechanical or electrical energy in a much smaller turbine than in the conventional wind mill configuration. This technology encourages the distributed generation of green and renewable wind energy, complementing solar generation and the grid tie box, toward making the residential home energy neutral.