Sibanye's 89mw Wind Farm Begins Commercial Operation Under Neal Froneman

Sibanye-Stillwaters 89 MW Castle Wind Farm begins operations, reducing reliance on Eskoms grid.
The project will cut 321,000 tons of CO emissions, supporting the companys 2040 carbon neutrality target.
Neal Froneman leads Sibanyes renewable strategy, expanding to 318 MW in new projects by 2026.
Sibanye-Stillwater, led by South African billionaire Neal Froneman nearing retirement, has commenced commercial operations at the 89 MW Castle Wind Farm, marking a pivotal step in the companys renewable energy expansion.
As South Africas largest private-offtake wind farm, the project is set to bolster Sibanyes mining operations with stable, low-cost renewable power, reinforcing its commitment to sustainability while reducing exposure to Eskoms unreliable and costly grid.
Scaling renewable energy investmentsCastle Wind Farm, near De Aar in the Northern Cape , harnesses the regions rich wind resources and prime grid access to deliver clean power. Developed under a 15-year BOOT Power Purchase Agreement, it ensures reliable energy via a wheeling deal with Eskom. By securing early grid access, Sibanye-Stillwater has sidestepped South Africas transmission bottlenecks that have stalled many projects.
With an annual output of 309 GWh, the wind farm will supply 5.5 percent of Sibanye-Stillwaters local electricity needs, cutting 321,000 tons of CO emissions5 percent of its total Scope 1 and 2 emissionsadvancing its 2040 carbon neutrality target.
Castle Wind Farm is part of Sibanye-Stillwaters broader push into renewables, with 318 MW in additional projects, including the 75 MW Springbok Solar and 103 MW Witberg Wind Farm, both launching in 2025. By 2026, another 333 MW, including the 140 MW Umsinde Emoyeni Wind Farm, will come online.