Russian energy giant Gazprom has acquired controlling stakes in wholesale generating companies OGK-2 and OGK-6, as well as minor stakes in three territorial generating firms, the head of Unified Energy System said Friday. "As a result of a share swap between minority holdings comprised of UES shareholders, Norilsk Nickel, Gazprom and [coal mining company] SUEK, Gazprom`s share in OGK-2 and OGK-6 will grow to 55% and 52%, respectively. Gazprom will also receive a 5% stake in [territorial generating company] TGK-11, over 4% in TGK-12, and a little under 5% in TGK-13," Anatoly Chubais said. He said SUEK will see its stake in TGK-12 increase to 5%, while Norilsk Nickel will acquire 14% in OGK-3. "Therefore, neither SUEK nor Norilsk Nickel will gain direct control," Chubais said. He said only Gazprom will have a controlling stake in the two companies, but that the gas monopoly`s control could be lost after a new share issue.