OSLO (Reuters) – Norwegian aluminium producer Norsk Hydro will cut output at two of its Norway plants due to falling European demand, the company said in a statement on Tuesday. “The extraordinary situation in the European economy and energy market is causing market uncertainty and a decline in demand for our aluminium products,” Hydro said. The combined cuts at Karmoey and Husnes correspond to an annual production capacity reduction of 110,000-130,000 tonnes of primary aluminium, including production recently taken out for ordinary maintenance and not yet restarted, Hydro said. Hydro’s Norweg…