Eskom, a South African electricity public utility, is exploring plans to sell excess daytime electricity to Bitcoin mining companies as rooftop solar installations reduce grid demand during daylight hours.
Speaking at the Biznews Conference 2026 in Hermanus, Eskom chairman Mteto Nyati said the utility is evaluating ways to monetize surplus power generated during the middle of the day, according to local reporting.
South Africa’s rapid adoption of rooftop solar systems has begun to reshape the country’s electricity demand profile. Many households and businesses now generate their own power during daylight hours, leaving Eskom with unused capacity once solar panels begin producing electricity.
Nyati said the pattern is increasingly predictable.
Demand spikes in the early morning as households prepare for work and businesses open. As solar generation ramps up later in the day, grid demand falls, leaving Eskom with surplus electricity.
Eskom is looking at creative ways and means of using that capacity. One option under review is offering discounted electricity to Bitcoin mining companies operating in South Africa. The sector runs large data centers that perform energy-intensive computations to secure the Bitcoin network.
Nyati said industries such as Bitcoin mining are contributing to rising global electricity demand. He said that the technology did not exist two decades ago but now represents a growing source of power consumption.
Selling excess electricity to miners could allow Eskom to generate revenue from power that might otherwise go unused during solar-heavy hours.
South African Bitcoin mining opportunities
The idea also builds on earlier comments from Eskom chief executive Dan Marokane, who said the state-owned utility is examining opportunities tied to Bitcoin mining, artificial intelligence infrastructure, and large-scale data centers.
Those sectors require large, continuous electricity supplies and could provide new demand for Eskom’s generation fleet.
Nyati framed the initiative as part of a broader strategy to adapt to structural changes in South Africa’s electricity market.
The country’s power sector is opening to private investment, allowing independent companies to build generation capacity and compete in electricity distribution. At the same time, rising rooftop solar adoption is shifting demand away from the national grid.
Nyati said Eskom must adapt to remain viable in a more competitive environment.
Alongside new revenue strategies, Eskom is pursuing cost reductions. Nyati said the utility plans to eliminate about R112 billion in expenses over the next five years.
Reducing those costs could help lower electricity prices for households and energy-intensive industries such as mining and smelting.
Despite the changes in the energy landscape, Nyati said South Africa still needs a strong national utility.
He argued that Eskom’s coal and nuclear power stations provide the base-load electricity required to support industrial growth and economic development.
The proposal to supply discounted electricity to Bitcoin miners reflects how utilities are beginning to treat flexible energy consumers as tools for balancing supply and demand in an evolving power system.
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