A wind powered variable area exit aperture electric generating system having configurable, adjustable duct side walls by which means the ratio between the intake cross-sectional aperture area and the exhaust cross-sectional aperture area may be varied for maximum air molecule flow through the duct, leading to ideal maximum electrical output for any given air mass input. The planar characteristic and angular dispersion of the mutually leading edge coupled extended flaps, and the regular square interior housing result in complementary internal vortices developed at the trailing edge of the planar architectural surfaces.