In a concerted effort to stave off power cuts across South Africa, Eskom has increasingly relied on diesel-fueled auxiliary turbines, known as open-cycle gas turbines (OCGTs), following unexpected delays in restoring some of its generation capacity. This strategic move comes after a significant 2,685 megawatts of capacity failed to return to service as planned on September 23, as confirmed by the utility in a recent communication.

The delays have been compounded by unanticipated high electricity demand driven by the last few weeks unexpected cold weather conditions, placing additional strain on the national grid. Eskom's proactive approach in utilizing these auxiliary turbines has been crucial in maintaining electricity supply without resorting to rolling blackouts, a notable achievement given the utility's past challenges with load shedding.

For over six consecutive months, Eskom has managed to prevent rolling blackouts, an accomplishment that has been widely recognized and lauded. However, this operational success has come at a cost. The reliance on OCGTs, which are traditionally intended for use during peak demand periods, has been "extensive," with Eskom utilizing more power from these units in September 2023 than in the corresponding month of the previous year.

Despite the increased usage of these turbines, Eskom has managed to significantly reduce the associated diesel costs. From April to September, the expenditure on diesel to power the turbines was slashed to about a third of the R17.1 billion spent during the same period in 2023. This reduction in costs is a testament to Eskom's efforts to optimize its resources and manage expenses while navigating the challenges posed by capacity delays and heightened demand.




The utility's strategy reflects a delicate balancing act between ensuring an uninterrupted power supply and managing operational costs effectively. As South Africa continues to face energy supply challenges, Eskom's ability to adapt and respond to immediate needs while planning for long-term stability remains a focal point of its operational agenda.

Looking ahead, Eskom's reliance on diesel-fueled turbines raises questions about sustainability and environmental impact. While these units provide a necessary stopgap to prevent power outages, their extensive use underscores the need for a more sustainable and reliable energy infrastructure. The utility has acknowledged these concerns and is reportedly exploring alternative energy solutions to diversify its energy mix and reduce dependency on fossil fuels.

In the interim, Eskom's prompt action to engage the OCGTs has garnered public and governmental support, highlighting the critical role of adaptive strategies in managing national energy security. As the utility continues to address its capacity challenges, stakeholders remain hopeful that ongoing investments in infrastructure upgrades and renewable energy projects will yield long-term benefits.

Eskom's endeavor to balance immediate energy demands with future sustainability goals is reflective of broader global trends in energy management. The situation in South Africa serves as a microcosm of the challenges faced by energy utilities worldwide, emphasizing the importance of innovation and adaptability in the face of evolving energy landscapes.

As Eskom navigates these complex dynamics, the utility remains committed to delivering reliable power to the nation, even as it grapples with the intricacies of capacity restoration and demand management. The road ahead will require continued vigilance and strategic foresight.