1975-1984 wind data and other parameters such as obstacle information were taken for a specific inhabited island (Bozcaada) on the west coast of Turkey and used for calculation of wind energy usage possibilities on this island. Calculations were made by using appropriate computer programs which were prepared by the authors and also a computer program WAsP (Wind Atlas Analysis and Application Program, Mortensen, 1993) was used. Conclusions were classified according to the height above ground level and were discussed with the performances of some available commercial wind turbine systems in these conditions.