KIEV, Nov. 3 - Ukraine’s only aluminum smelter, ZALK, owned by Russian aluminum giant Rusal, started to shut down some of its aluminum-making facilities due to rising debts for power consumption, a top company official said Monday.

Oleksandr Kotiuk, ZALK director general, said ZALK will probably reduce aluminum output by 25% on the month in November, but warned further reduction is possible within the next three months unless the government takes urgent measures to help the smelter.