Kenya's Chalbi Desert is a bleak, forbidding stretch of coarse sand and ash-gray ridges broken by clusters of tiny huts. It is also one of the windiest places on Earth, experts say, and it soon will be the site of Africa's largest wind farm. Construction on the $760 million project began in Jan 2009, which envisions more than 350 wind turbines towering over desert expanses near Lake Turkana in northern Kenya. When completed in 2012, the wind farm is expected to boost the power supply in this nation by almost 30 percent. Kenya is one of the continent's greenest countries, with nearly three-quarters of its power coming from hydroelectric and geothermal sources.