The Gauteng High Court has set aside the National Energy Regulator of South Africa’s (Nersa’s) most recent evaluation of Eskom’s regulatory asset base (RAB), a decision that has potential significant implications for a pending tariff determination. The State-owned utility took the regulator’s RAB decision on legal review after Nersa more than halved Eskom’s RAB to R551-billion relative to the R1.25-trillion outlined in its revenue application for the 2022/23 financial year.