Africa should expand its sources of renewable energy to fight the poverty widespread among the continent's 800 million people, top international energy experts told a conference in Nairobi on Saturday. "It's in Africa where renewable energy is needed most for poverty alleviation," Manfred Konukiewitz, the top energy official in Germany's economic and development ministry, said. He was addressing the final session of a two-day African energy ministers conference, convened by the UN Environment Programme (UNEP) in Nairobi, to formulate a common position ahead of a world energy conference in Germany next month.