Home / Business / Companies / ManufacturingJamie GrayBusiness Reporter·NZ Herald·26 May, 2026 09:56 PM3 mins to read‌Rio Tinto plans to re-start line four at Tiwai Point. Rio Tinto plans to re-start line four at Tiwai Point. Rio Tinto and Contact Energy have done a deal to support the restart of the fourth aluminium potline at the Tīwai Point smelter.

The parties have signed a non-binding letter of intent (LOI) for a power purchase agreement to support the restart of line four, which has been idle since

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