Eskom's Virtual Wheeling Pilot Report Is Due: What the Outcome Means for C&I Off-Takers Structuring Bilateral Contracts Without Physical Grid Upgrades

Eskom's Virtual Wheeling Pilot Report Is Due: What the Outcome Means for C&I Off-Takers Structuring Bilateral Contracts Without Physical Grid Upgrades

South Africa's commercial and industrial (C&I) energy market is approaching a meaningful inflection point. Eskom's virtual wheeling pilot phase is scheduled for launch in mid-2026 — and with that date now upon us, the outcome of this initiative carries significant commercial weight for every C&I off-taker weighing up how to structure renewable energy procurement over the next three to ten years.

What Is Virtual Wheeling — and Why Does It Matter?

Virtual wheeling is a financial mechanism that facilitates the sale and delivery of electricity from Independent Power Producers (IPPs) to end-users via an existing transmission or distribution network. Crucially, it does not require physical grid upgrades or new line infrastructure. Rather than requiring a direct bilateral arrangement between a single generator and a single off-taker, virtual wheeling allows entities to transact on behalf of multiple Eskom or municipally connected customers simultaneously, claiming energy purchased from a generator across an entire portfolio of sites.

This distinction is transformative for the C&I sector. The proposed introduction of virtual wheeling, a new product offering by Eskom, opens opportunities for companies with multiple smaller and low-voltage loads scattered across various geographies in South Africa to participate in the market. Under conventional wheeling, these businesses were either excluded or faced prohibitive complexity.

From Pilot to Platform: The Vodacom Proof-of-Concept

Eskom officially launched virtual wheeling at the end of March 2025, following a pilot phase conducted in partnership with telecommunications group Vodacom, which played a key role in the development of the concept. In August 2023, Vodacom signed Eskom's first Virtual Wheeling Agreement after a successful pilot phase and rigorous testing.

However, the Vodacom proof-of-concept also revealed real operational challenges. The proof-of-concept with Vodacom demonstrated that virtual wheeling is technically feasible, but it also exposed the administrative burdens associated with manual processes — tracking allocations from multiple generators, matching them to time-of-use consumption across thousands of meters, validating interval data, running and reconciling refund calculations, and integrating results into billing systems.

To address this, Eskom awarded a significant contract to Johannesburg-based Enerweb to build a software platform that will automate and scale the utility's new wheeling model. The platform Enerweb is building for Eskom Distribution will need to interface with traders, aggregators and potentially the forthcoming wholesale market operator under the National Transmission Company South Africa's (NTCSA) Market Code.

What This Means for C&I Off-Takers Right Now

For C&I energy managers and CFOs, the most immediately practical implication is contractual. No amendment to an existing Eskom supply agreement is required, no new deposit obligations are triggered, and customers supplied through a municipality can participate on the same basis as those connected directly to Eskom. This removes one of the most persistent friction points in traditional wheeling deals.

The settlement mechanism is also straightforward in principle. Virtual wheeling sets up a virtual account to manage credits. Customers maintain their normal municipal bills, and Eskom rebates overpayments based on the wheeled energy. Once approved, a production account will be activated and the virtual wheeling platform will automatically begin producing scheduled monthly reconciliation reports. These reports will decide the refund to be paid to the buyer at the end of the month.

Despite the formal launch in March 2025, however, market uptake has been cautious. No virtual wheeling contracts have as yet been concluded, including with Vodacom, but Eskom says it has received a number of enquiries. The mid-2026 pilot phase — now effectively beginning — is therefore the real test of whether the commercial rules and automated platform are fit for purpose at scale.

The Bigger Picture: Market Reform and Regulatory Alignment

Virtual wheeling does not exist in isolation. The awarding of the Enerweb contract provides the clearest signal yet that Eskom intends virtual wheeling to form part of the transitional architecture leading to the future wholesale market envisaged under the national electricity-market reform programme.

After pressure from Energy and Electricity Minister Kgosientsho Ramokgopa, Nersa expedited the preparation of electricity trading rules, with public hearings scheduled for January 2026 and the final trading rules expected to be in place by the end of the first quarter of 2026. Once adopted, the rules will govern the conduct of electricity traders, define settlement processes, regulate the flow of financial and metering data, and determine how traders participate in Eskom's wheeling and virtual wheeling systems.

At the same time, the private sector is accelerating to meet demand. Mezzanine and Open Access Energy (OAE) have entered into a formal reseller agreement, under which OAE will market, sell, and operate Mezzanine's Virtual Wheeling Platform as part of its Energypro offering — enabling corporate energy buyers, independent power producers, and traders to access virtual wheeling infrastructure through a single, integrated experience.

The SolarXgen Perspective: What C&I Buyers Should Do Now

The mid-2026 pilot launch is not a reason to wait — it is a reason to prepare. C&I off-takers with multi-site footprints, dispersed municipal connections, or energy loads that have historically been too small or too fragmented for conventional wheeling deals should be conducting feasibility assessments now. Key considerations include:

• Meter readiness: Meters will need to be linked to the virtual wheeling platform via Eskom's meter vendor cloud. Conducting a metering audit ahead of time is essential.
• Generator and aggregator selection: The rise of trader-led market models is enabling greater flexibility and shorter contract structures for corporate buyers — shop the market carefully.
• Contracting structure: Virtual wheeling allows an entity — the buyer — to purchase electricity from an IPP and have that energy virtually allocated to multiple grid-connected end-users, by signing a power purchase agreement with the IPP and then contracting with customers connected to the Eskom or municipal grids. Legal structuring of this PPA is critical.
• Regulatory risk buffering: The timing of Eskom's contract award suggests that implementation must run in parallel with rule-making if the country is to meet its 2026–2030 market-reform milestones. Build contractual flexibility to accommodate evolving trading rules.

South Africa's energy transition is no longer theoretical. Virtual wheeling — if the mid-2026 pilot phase delivers — will allow C&I businesses to access clean, competitively priced renewable energy at scale, without waiting years for physical grid reinforcement. The window to structure advantageous bilateral contracts is opening. The C&I buyers who act now will be the ones locking in the best terms.