Companies such as steel producer ArcelorMittal SA, mining group South32 and industrial users including Consol Glass and Nampak face a more than threefold rise in natural gas prices in July.

As a result, the National Energy Regulator of SA (Nersa) is being taken to court by industry body the Industrial Gas Users-SA (Igua-SA) over the methodology used to set gas prices, which are poised to rise by as much as 220% this year...

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