Google John O. Dabiri Caltech. Researching the wave vortex created by schools of fish, the Caltech team has come up with a 30 ft turbine that does not kill birds, bats, is silent and does not strobe. Does not require bulldozing large areas of land. In 2 acres can supply the same amount of energy as 22,000 acres of mega propeller turbines.......is eco friendly to plants, animals and people. Can be put up and maintained by local contractors. Plz read....can replace the eco destructive propeller turbines that are already antiquated.