The National Energy Regulator of South Africa (Nersa) has issued a notice informing all municipal power providers to submit their tariff adjustment applications for 2025/26 with an accompanying cost of supply study. Failure to comply will result in no adjustment to the respective provider’s electricity tariffs for the upcoming financial year. “All tariff applications are required to be supported by a cost of supply study,” the regulator stated. “Tariff applications that are supported by cost of supply studies must be submitted to Nersa by 30 April 2025. This will facilitate processing and approval in time for the 1 July 2025 implementation date.”  Thabiso Kotane speaks to Acting Executive Manager for Electricity at NERSA, Mondli Shozi.