The approval from South Africa's energy regulator secures energy supply until 2031 for the Hillside smelter, state-owned Eskom's largest industrial customer, under a rand-based tariff with escalations linked to South Africa's producer price index (PPI), South32 said in a statement.
This will replace the previous contracts, which were U.S dollar based and linked to the aluminium price on the London
"Hillside has been a major Eskom customer for 25 years and this agreement provides power cost certainty for a further 10 years, with Eskom receiving a price aligned to long-term tariff policy," said South32 chief executive Graham Kerr.
South32 said the operating unit cost for the 2021 financial year will reflect the higher power charges from the new agreement.
The agreement will also allow Eskom to interrupt supply to the smelter during national power cuts.
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