Ethiopia is pursuing a massive dam building project that it hopes will generate alternative sources of power, but critics have said the endeavour will be an environmental disaster.The government embarked on the project - expected to be the largest hydropower plant in Africa - to help solve a national energy crisis and to help turn Ethiopia's economy around."The rural population will get electricity, the amount of megawatts we are going to produce is for all the population. It is not only for industry or towns it is for all nation," Alemayehu Tegenu, Ethiopia's energy and water minister, told Al Jazeera.Foundations have already been laid at the Gibe III dam, in Oromia in western Ethiopia. When completed, the dam's 243-metre high wall will be the tallest of its kind in the world.Xinhua