Africa's largest power utility has signalled plans to sell discounted daytime electricity to Bitcoin mining companies, converting a structural grid problem into a potential revenue source.

Eskom chairman Mteto Nyati made the announcement at the Biznews Conference 2026 in Hermanus on March 11. The plan would offer miners lower power rates during daylight hours, when a surge in rooftop solar output causes midday demand to crater, leaving the state-owned utility holding surplus generation it cannot easily monetize. The announcement marks a notable shift in direction for Eskom. As recently as 2024, the utility fought in court to block a gold mine from installing independent solar generation. The chairman's public endorsement of Bitcoin mining as a demand-management tool signals a significant reversal of that stance.

South Africa's solar buildout is moving faster than the grid can adapt. Residential and commercial rooftop installations now total roughly 7,300 to 7,400 megawatts of capacity, surpassing the combined capacity of all of Eskom's contracted independent power producers. That figure grew 218% over three years. On clear days, private panels generate approximately 5 GW at noon, rising to close to 8 GW by mid-afternoon. By September 2025, noon-hour electricity consumption had fallen 18.4% below 2019 levels, and overall sales volumes dropped 3% in the first half of fiscal 2026 even after Eskom pushed through a 12.74% tariff increase.

"The power utility wants to sell spare daytime electricity to Bitcoin mining companies in South Africa at a cheaper rate," Nyati said at the conference. He also acknowledged the utility's continued dependence on conventional generation: "South Africa still needs a strong Eskom to provide reliable base-load electricity from its coal and nuclear power stations to support economic growth."

The mining proposal sits inside Eskom's Cost Optimisation and Revenue Enhancement program, known as CORE, which targets R112 billion in savings over five years. CORE encompasses both cost-reduction and revenue-generation initiatives, with Bitcoin mining falling on the revenue side of that ledger. Analysts have estimated that a structured mining program near Eskom infrastructure could recover up to R2.6 billion in annual revenue from surplus energy. CEO Dan Marokane has indicated that mining, data centers, and AI applications can bring in revenue without compromising grid stability.

At least one private firm has already made a formal approach. Bitmach, a Bitcoin mining company co-founded by Stafford Masie, Rob Herzov, and Carel de Jager, approached Eskom earlier this year with a proposal to absorb up to 5 GW of excess power instantaneously. Masie, who serves as Executive Chairman of African Bitcoin Corporation, a company associated with Bitmach, described the current situation simply: "We have too much power in the country." The Bitmach model is built around demand response, meaning miners would cut power consumption immediately when evening demand rises, freeing up capacity at exactly the moment the grid needs it most.

That model is already proven in other markets. Texas grid operator ERCOT relies on Bitcoin miners as controllable loads. France is executing a multi-year plan to build Bitcoin mining infrastructure near nuclear and renewable sites. Iceland and Sweden channel surplus geothermal and hydroelectric power to miners, with waste heat rerouted to both agriculture and building heating systems.

The idea is also not new in South Africa specifically. De Jager first raised it in 2018, and a 2025 Moneyweb analysis claimed, without detailing its methodology, that Eskom would carry no debt today if it had launched a mining operation in 2020. That projection depends on significant assumptions about Bitcoin price trajectories, mining profitability, and Eskom's operational execution.

For the broader African crypto sector, the signal carries weight. Sub-Saharan Africa received more than $205 billion in on-chain transaction value between July 2024 and June 2025, a 52% year-on-year increase and the third-fastest regional growth rate globally, behind Asia-Pacific and Latin America, according to Chainalysis. South Africa ranks 31st in the Chainalysis 2025 Global Crypto Adoption Index and has built one of the continent's most structured regulatory regimes for crypto assets, according to analysts.

The country's Financial Sector Conduct Authority (FSCA) has approved roughly 300 of 512 Crypto Asset Service Provider license applications so far. Mining operations, however, fall outside that framework for now, leaving an unresolved policy gap around how mining revenues would be classified and taxed.

Eskom carries R403 billion in total debt (approximately $22.7 billion USD at recent exchange rates) and R105 billion in unpaid municipal arrears. The utility endured eight consecutive years of losses before returning to profitability in fiscal 2025, when it posted a R16 billion profit. That recovery accelerated through the first half of fiscal 2026, with R24.3 billion in after-tax profit, but the underlying revenue problem persists as households and industrial customers continue building their own generation capacity.

No contract has been signed and no formal tender has been issued. The pricing structure for discounted miner rates has not been disclosed, and the commercial case for mining in South Africa will depend on where those rates land against global electricity benchmarks. Currency risk adds further uncertainty: Bitcoin trades in a volatile range and the South African rand faces persistent pressure, meaning the profitability calculus for miners will fluctuate significantly alongside both variables. Eskom's own 2026 to 2030 system adequacy outlook already flagged operational risks from uncoordinated distributed generation. Adding large, interruptible industrial loads to a grid already swinging up to 8 GW within a single day introduces new complexity for engineers and regulators. How quickly Eskom moves from public statement to formal agreement will determine whether this becomes a meaningful part of the utility's recovery story or remains one more idea waiting for implementation.