summary

The position paper operationalises the Electricity Regulation Amendment Act (ERAA) of 2024 by outlining the architecture of the South African Wholesale Electricity Market (SAWEM):

• • Market Unbundling:
    Eskom is being split into legally distinct operating entities for Generation, Transmission (NTCSA), and Distribution.
  • The South African Wholesale Electricity Market (SAWEM):
    A voluntary centralised trading platform administered by a Market Operator (MO) for Day-Ahead and Intra-Day trading, alongside privately negotiated bilateral contracts and a mandatory real-time balancing mechanism.
  • Transmission & System Operation:
    The National Transmission Company of South Africa (NTCSA) serves as the independent Transmission Network Service Provider (TNSP), System Operator (SO), Market Operator (MO), and Central Purchasing Agency (CPA). Private Independent Transmission Projects (ITPs) will be introduced to accelerate grid expansion.
  • Retail vs. “Wires” Separation:
    Municipal and Eskom distribution businesses will be unbundled into separate regulated network (“wires”) businesses and licensed retail/trading businesses.
  • Customer Tiers:
    Large power users exceeding a determined capacity threshold (e.g., 1 MW) become “Eligible Customers” free to choose independent traders or buy wholesale, while residential households and small businesses remain “Captive Customers” under NERSA-regulated municipal tariffs.
  • Balance Responsibility & Penalties:
    All participants (generators, traders, eligible buyers) must accurately forecast and schedule energy, facing direct financial liability for grid imbalances.
  • Timelines:
    Soft-launch of wholesale operations in 2026, followed by phased participant opening from 2027.

Recent industry statements and media reporting highlight key systemic friction points:

• • The “Captive Ratepayer Trap” & Municipal Defection:
    Municipalities rely heavily on electricity surpluses from large commercial users to cross-subsidise indigent households and basic services. Allowing high-paying users to buy power directly from private traders risks leaving municipal distribution entities with insolvent revenue models and stranded captive households.
  • Market Power & Eskom Dominance:
    Eskom Generation still controls the vast majority of baseload power. Industry analysts warn that without strict bidding regulation and vesting contracts, Eskom could exercise market power (economic or physical withholding) or suffer financial collapse.
  • NTCSA Multiple-Hat Conflicts of Interest:
    |Consolidating network ownership, market operation, system dispatch, and the Central Purchasing Agency (holding legacy IPP contracts) under the NTCSA creates structural conflicts of interest that could disadvantage independent power producers and private traders.
  • The “Anti-Free-Riding” Clause & Grid Defection Charges:
    The paper explicitly targets off-grid and partial-solar users by prioritising fixed capacity network charges over volumetric usage tariffs to recover sunk grid costs, potentially penalising private embedded generation.
  • Market Readiness & Balancing Penalties:
    Eskom leadership and market participants have cautioned that premature launches without robust credit risk frameworks, financial settlement systems, and municipal debt solutions could trigger market concentration or systemic failure.

The position paper explicitly identifies grid-tied rooftop solar households under its “anti-free-riding” principle (Section 1.2.2). Because solar users consume fewer kilowatt-hours from the grid while still relying on it at night or during overcast weather, the policy argues they are not paying their fair share of fixed infrastructure costs. To address this, the framework mandates a shift away from pure per-unit consumption billing toward higher mandatory fixed monthly capacity and network charges for all grid-connected users, regardless of how much electricity they actually draw.

In the long term, competitive generation should lower wholesale production costs. However, in the medium term, ordinary residential households face two pricing pressures:

• • Unbundled Network Charges: Fixed maintenance costs for transmission lines and local substations will be billed separately from the energy itself.
  • The Loss of Commercial Subsidies:
    If large corporate customers leave municipal retail supply to buy cheaper power directly from independent traders, municipalities lose their highest-margin revenue stream. Unless local distribution structures are overhauled, councils may hike tariffs on captive residential users to balance their budgets.

In an open wholesale market, dominant players can theoretically drive up prices through economic withholding (bidding electricity into the day-ahead market at artificially inflated prices) or physical withholding (deliberately holding back generation capacity to create artificial shortages). Because Eskom Generation will continue to control the bulk of South Africa’s baseload capacity for years, the paper proposes:

• • A dedicated Market Surveillance Unit (MSU) to monitor trading for collusive behaviour.
  • Vesting Contracts: Multi-year transitional contracts that lock in fixed baseline prices between Eskom and distributors to limit market volatility during early years.
  • NERSA Bid Regulation: Direct regulatory power allowing NERSA and the Competition Commission to cap or audit Eskom Generation’s bids into the market platform.

No. The position paper maintains a strict distinction between “Eligible Customers” and “Captive Customers”. Only large industrial and commercial consumers exceeding a determined threshold (e.g., 1 MW demand) will initially be permitted to shop around and contract with private electricity traders or buy from the centralised market. All residential households and smaller commercial entities remain captive customers of their local municipal or Eskom distribution retailer under regulated tariffs.

Not directly into the wholesale day-ahead trading platform. The wholesale market will enforce minimum capacity thresholds (such as 1 MW) and strict prudential and technical balancing requirements. Residential solar exports will continue to rely on local municipal Small-Scale Embedded Generation (SSEG) feed-in tariff programmes, which will feed into the local distributor’s portfolio rather than direct wholesale market settlement

Under SAWEM, every generator, trader, and municipal buyer is legally and financially responsible for matching the power they scheduled to deliver or consume against what is actually produced and used in real time. If a municipal distributor or private trader under-forecasts demand or experiences unplanned deviations, they face steep imbalance penalties settled through the Market Operator’s balancing mechanism. If municipal distributors manage their scheduling poorly, these financial balancing penalties could be passed down into consumer tariffs.

The position paper acknowledges that many municipal distributors are not financially viable and cannot meet the strict prudential (creditworthiness) requirements needed to trade on the centralised wholesale platform. The state proposes creating intermediate mechanisms allowing non-qualifying municipalities to procure power while separating their retail sales business from network maintenance accounts. However, critics argue that without resolving the historical municipal debt owed to Eskom, introducing an open wholesale market risks creating a two-tiered system where well-managed cities thrive while debt-distressed municipalities face worsening service failures.