In the cavernous chamber of Norsk Hydro's aluminum smelter on the Norwegian...
KARMOEY, Norway/LONDON - In the cavernous chamber of Norsk Hydro’s aluminum smelter on the Norwegian island of Karmoey, the magnetic forces are so strong they make heavy iron wrenches float out of the hands of workers.
The technique is one of the drives that Hydro is banking on to make good on its ambitious pledge to become carbon neutral from next year - meaning it can balance out its emissions with carbon savings elsewhere. Norsk Hydro said its pilot produced aluminum using between 11.8 and 12.3 kilowatt hours of energy per kilogram of aluminum. It said the 11.8 figure was a record low for the industry which it said averaged 14.1.The plans have cost billions of Norwegian crowns, however, and there is a long way to go before they are likely to have a major impact across Norsk Hydro’s business.
The tech drive has come at a time when Norsk Hydro has been under some financial and reputational strain. It is reliant on Brazil, home to its largest alumina refinery, where a spill of untreated water into a river last year has forced the company to halve the plant’s capacity, has dragged on its share price and tarnished its green credentials.
Much of this, though, is down to the company being based in Norway, where hydroelectricity - favored by most firms as the cheapest way to produce aluminum - is abundant.
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