Johannesburg: Eskom is expected to return at least 2550MW capacity to the grid by evening peak on Monday as South Africa braces for severe winter conditions throughout the country this week. The power utility said it is making ‘steady progress’ in tapering down maintenance season with the Energy Availability Factor ‘fluctuating between 61% and 64%’ last week.
According to South African Government News Agency, while system constraints are occasionally experienced, adequate emergency reserves are in place and are being strategically deployed to support demand during the morning and evening peak periods, particularly as the country prepares for a forecasted cold spell in the coming week. Eskom plans to return a total of 2550MW of generation capacity to service ahead of the evening peak to further stabilize the grid.
Eskom revealed that Medupi Unit 4 is in the last phases of recovery following damages sustained in 2021. Commissioning activities are currently underway and Grid Code compliance testing is expected to resume in the coming week. The unit is anticipated to return to service within June 2025. Diesel usage is expected to decline further as more units return from long-term repairs and maintenance activities are reduced, increasing available generation capacity.
The Winter Outlook, covering the period ending 31 August 2025, remains valid. It indicates that load shedding will not be necessary if unplanned outages stay below 13 000MW. If outages rise to 15 000MW, load shedding would be limited to a maximum of 21 days out of 153 days and restricted to Stage 2.
The power utility has encouraged communities to ‘avoid illegal connections and energy theft’ even as the winter period rolls in. These activities often lead to transformer overloads, equipment failures, and in some cases, explosions and extended outages, prompting the need for load reduction to protect the network. To help maintain a stable electricity supply this winter, customers are encouraged to purchase electricity only from Eskom-accredited vendors and take responsibility by regularising their electricity usage.
Eligible households are encouraged to register for free basic electricity with their local municipalities. Furthermore, customers are encouraged to use electricity sparingly throughout winter. Use the Eskom Residential Calculator to track and optimise electricity usage. The tool can be accessed at https://www.eskom.co.za/distribution/residential-calculator/