Ethiopia has been relied much on hydroelectric plants for of its power demand. But Hydrornpower is exposed to the effects of climatic change. Problem of water level fluctuation isrnincreasing continuously in most of the hydropower dams resulting from the climaternchange. As the demand for safe and clean electricity increases due to industrialrndevelopment and population growth in the country, expanding wind energy industry isrngreatly helpful to Ethiopia to meet its growing massive energy demand and to promoternsustainable development. The country has enormous potential to generate electricity fromrnwind.rnThis study investigates the wind energy resource potential for Mosobo-Harena usingrndifferent statistical methods and software. MS-Excel and MATLAB programs were usedrnto generate time-series graphs of wind speed and direction , frequency distributions ofrnwind speeds (wind speed histogram) and a wind rose for 12 continuous months fromrnJanuary 1/2007 to December 31/ 2007. And WAsP (The Wind Atlas Analysis andrnApplication Program) was used for predicting wind resources, wind atlas generation,rndevelop site wind resource map, identify wind potential sites, sitting of wind turbines andrnestimating farm annual energy production (AEP). The analysis was conducted based onrnone year 10 minutes interval wind speed collected data from mast at Mosobo-Harena atrnheights of 10m and 40m above ground level. This site has an average wind speed of 5.47rnm/s and annual wind power density is 161w/m2 at mast height of 10m.rnThe digital map of the study area was prepared by digital map generating software calledrnGlobal Mapper considering an area of 20km by 20 km. Grid resource map for the windrnfarm was generated at some standard heights of 10m, 40m, 60m, 80m and 100m. Thenrnfrom these standard heights, the hub height of the turbine was decided to be 60m for thisrnproject. And thus wind turbine Vestas V60-850kw was selected from WAsPrndocumentation catalogue.rnThe proposed wind farm has 72 turbines. At the selected turbine hub height of 60m, thernannual mean wind speed and wind power density of the farm are 6.79m/s and 316W/m2rnrespectively, this is categorized as IEC class-III wind resource at this height. And thernfarm installed capacity is 61.8 MW, the net farm AEP is estimated to be 201686.7 MWhrrnand the average capacity factor was calculated to be 37.6%.