Eskom has submitted a R5.4 billion supplementary tariff application to energy regulator Nersa, and for the first time it has also included interest – to the tune of R1.3 billion – in the application. This is over and above the R27 billion application Eskom made for its Regulatory Clearing Account. Eskom won a court case against Nersa after the regulator unlawfully and irrationally truncated Eskom's application to R13 billion We spoke to Hasha Tlhotlhalemaje, General Manager of Regulations at Eskom.