Abstract: A device and method of extracting energy from a moving stream such as an ocean current and the wind using a new and different augmenter system. Light weight augmenters are provided that circulate and focus portions of the moving stream to improve performance of a horizontal axis turbine system. Both turbine and augmenter systems are elevated above ground drag effects by a support structure. Means are provided to orient the device with changing stream direction and vary the augmenter system with changing stream velocity. Means are provided for conversion of the energy extracted from the moving stream to useful electrical or mechanical energy. Means are provided to protect the device and minimize maintenance.