 Also in 2010, KEPCO bought a 20% stake in Bayan Resources in Indonesia, thus allowing the company to raise its coal self-sufficiency rate by 7 million tons annually from 2015.In 2009, KEPCO bought a 1.5% stake in Indonesia's Adaro Energy, thus securing 3 million tons of coal annually.Regarding uranium procurement, in 2009, KEPCO acquired a 17% share of Denison Mines Corp. in Canada, as well as a 10% stake in Areva SA's Imouraren uranium mine in Niger.