Eskom Confident of Meeting Winter Demand, Minerals Council South Africa Indicates

Why It Matters

Eskom’s ability to avoid load‑shedding this winter supports economic stability, while the mining sector’s shift to self‑generated power reshapes energy demand patterns across South Africa.

Key Takeaways

• Eskom's energy‑availability factor fell to 66.8% in March
• Dispatchable reserve remains above 4,000 MW despite lower availability
• Unplanned outages dropped to 9,201 MW, below 10,000 MW threshold
• Mining output now decouples from Eskom power as self‑generation rises
• Eskom continues net electricity exports, but regional demand stays weak

Pulse Analysis

Eskom’s latest operational data paints a mixed picture for South Africa’s power landscape. While the utility’s energy‑availability factor dipped to 66.8% in March—short of the 68% benchmark set in the Integrated Resource Plan—it still commands more than 4,000 MW of immediately dispatchable reserve. Planned maintenance rose by 1,300 MW, reflecting a proactive stance ahead of the winter peak, and unplanned outages fell to 9,201 MW, a notable improvement over February’s 9,754 MW. These trends suggest a more reliable grid, reducing the risk of load‑shedding as the colder months approach.

At the same time, South Africa’s electricity consumption continues to lag, driven by a broader economic slowdown and a structural shift in the mining sector. Production fell 3.8% year‑on‑year in February, and the historic correlation between mining output and Eskom’s generation has turned negative since April 2025. Self‑generated power—often cheaper than Eskom’s tariff—has surged, allowing mines to sidestep costly utility rates. This decoupling weakens the traditional use of Eskom’s output as a proxy for industrial activity, signaling a lasting transformation in how energy is sourced within heavy‑industry corridors.

Eskom’s net‑export status, maintained since May 2024, adds another layer to the evolving picture. While surplus capacity enables the utility to sell electricity abroad, regional demand is constrained by sluggish growth in neighboring economies and recent plant closures, such as South32’s Mozal aluminium smelter in Mozambique. Combined with persistent tariff pressures and modest GDP growth, these factors temper expectations for a rapid demand rebound. Stakeholders should watch how Eskom balances export opportunities with domestic reliability, especially as self‑generation and renewable integration accelerate across the Southern African power market.