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Economics of Tiwai Point smelter still going backwards

Wednesday 25 May 2016 11:17 AM

Economics of Tiwai Point smelter still going backwards, Woodward's Kidd says

By Pattrick Smellie

May 25 (BusinessDesk) - The economics of the Tiwai Point aluminium smelter continue to slide despite last week's announcement that it will be the largest single beneficiary of proposed national grid payment reforms, says Woodward Partners energy analyst John Kidd.

RioTinto-controlled New Zealand Aluminium Smelters was likely to try and plump up its approximately $21 million of savings on grid costs by applying for relief under the proposed "prudent discount policy" that could be applied to heavy industrial users pleading financial hardship.

"As it showed in 2013, Rio Tinto has a strong track record of doing exactly that," said Kidd, referring to NZAS's success in negotiating a lower power price with its primary supplier, Meridian Energy, ahead of the generator-retailer's partial privatisation.

Kidd also expects Auckland-based New Zealand Steel, which faces a 263 percent increase in its grid charges, to apply for such relief, along with other major North Island industrial users facing big grid charge increases, including Oji Fibre Solutions (formerly Carter Holt Harvey) and New Zealand Refining, which operates the country's only oil refinery, located in Whangarei.

NZAS operates New Zealand's only aluminium smelter, near Bluff in the South Island, and uses one-seventh of the country's electricity. It must decide in July whether to pay a higher price for 172 Megawatts of its 572 Megawatt electricity supply contract, starting in January 2017 and has been deferring capital expenditure as it weighs up whether to maintain the smelter at current full production, reduce operations or announce the smelter's total closure.

Despite improvements in the global price of aluminium, the New Zealand dollar had strengthened in the past month, largely negating the benefits of any price uplift, Kidd said in a note to clients issued on May 23.

"With aluminium market conditions remaining depressed, forward NZAS economics remain very marginal and with NZAS facing a material increase to the cost of its 172MW CFD (electricity contract) from 1 January 2017, we think the decisions NZAS faces over the next few months remain finely balanced," Kidd said. That was despite the proposed transmission price reductions reducing electricity costs from around $59 per MW hour to $54.80/MWh under contracts, rising to an estimated $56/MWh for the 172MW tranche to be renegotiated from January next year.

Whether the EA's transmission pricing methodology decisions represented "just enough" to continue operations as they are now "remains in our view open," said Kidd, who noted the new transmission charges don't kick in until 2019.

"The interaction of deferred capex, opex (particularly electricity cost) and plant capacity optimisation in NZAS's decision spectrum is opaque to those ... not directly involved with the plant," he said. "While it is true to say that the premia NZAS production attracts provide a critical point of positive revenue differentiation versus virtually every other smelter globally, the importance of this is lost if the smelting cost base approximates or even exceeds that revenue premium."

Woodward Partners estimates the current value of the Japanese market premium for the high-grade metal produced at Tiwai Point to be around US$100 per tonne, down from a recent peak of US$400 a tonne in 2014.

(BusinessDesk)

ends

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