Rusal is considering scenarios of closing a number of unprofitable plants amid low aluminum prices and financial losses from the introduction of the exchange rate export duty, a source close to one of Rusal's creditors told Interfax. In company does not comment on the possibility of closing a number of its plants. Experts believe that the most vulnerable in Rusal's structure are the Kandalaksha, Volgograd and Novokuznetsk aluminum smelters, which account for about 13% of the group's output.