JOHANNESBURG (Reuters) – A South African court on Tuesday struck down some of the tariff increases granted to Eskom this year, saying the power utility had not followed the correct procedure when applying for a special claw-back, local media reported.

National energy regulator (Nersa) in March allowed Eskom a total tariff hike of 9.4 percent, of which part was an interim increase for running expensive diesel generators to keep the lights on in Africa’s most industrialised economy.

A court in Johannesburg on Tuesday granted the application by business organisations to set the regulator’s decision aside.

Had the interim increase not been granted, the tariffs would have risen by 3.5 percent from April 1, Moneyweb reported.

Eskom would not comment on the court’s decision directly, saying in a statement it would await a decision by the regulator.

(Reporting by TJ Strydom)