‘South African mining companies accelerate renewable power investment as energy security and decarbonisation converge’ 27 August 2026

South Africa’s mining companies are accelerating investment in wind and solar power as they seek to reduce dependence on state utility Eskom, manage electricity costs and cut emissions, marking a shift in how one of the country’s most energy-intensive industries is managing both operational and climate risk. Anglo American, Sibanye-Stillwater and coal producer Exxaro are among companies expanding renewable-energy portfolios, while the broader move is being driven by persistent pressure on South Africa’s electricity system and the growing commercial importance of lower-carbon power. The shift reflects a change in the economics of energy for mining companies. Eskom remains central to South Africa’s electricity system, but years of operational problems, ageing infrastructure and historically unreliable supply have encouraged large industrial users to seek alternatives.

…The structure is significant because it demonstrates how private investment can use South Africa’s existing electricity network to connect renewable generation with large industrial consumers. Under the wheeling model, power generated in the Northern and Eastern Cape can be transmitted through Eskom’s grid to participating mines under long-term agreements. The Koruson projects are connected through a 400-kilovolt transmission substation capable of connecting up to 1.5GW of renewable generation. For mining companies, the rationale extends beyond carbon accounting. Electricity is a major operating cost, particularly for deep underground mines where ventilation, pumping, processing and material handling require substantial and continuous power. The availability of renewable electricity can therefore influence operating margins, energy-security planning and exposure to future electricity-price increases.

…The outcome will have implications beyond individual mining companies. If large industrial users can increasingly secure reliable power outside traditional utility structures, the model could help mobilise private capital into South Africa’s constrained electricity system. But it also reinforces the need for coordinated investment in transmission, storage and grid management so that private generation contributes to a more resilient electricity market rather than creating parallel systems accessible mainly to large corporate consumers. For South Africa, the mining industry’s renewable shift is therefore both a corporate strategy and a signal of a wider structural change. The transition is beginning to reshape who generates electricity, who finances infrastructure and how industrial users manage energy risk. For an economy where mining remains closely linked to exports, employment and public revenue, the ability to make that transition without weakening industrial competitiveness will be an important measure of the country’s broader energy and economic transformation.