South Africa's Market Code Goes Live in April 2026: What the New Participation Rules Mean for C&I Buyers Contracting Today

South Africa's Market Code Goes Live in April 2026: What the New Participation Rules Mean for C&I Buyers Contracting Today

South Africa's electricity sector has reached a structural inflection point. April 2026 marks the phased commencement of the South African Wholesale Electricity Market (SAWEM) and the associated Market Code — the most significant reform to the country's power sector since the dawn of independent power production. For commercial and industrial (C&I) buyers contracting solar, battery energy storage systems (BESS) and power purchase agreements (PPAs) right now, understanding the new rules is not optional. It is a prerequisite for sound energy strategy.

What Is the Market Code and Why Does It Matter?

The Market Code is the rulebook governing how electricity is generated, traded, wheeled, balanced and settled within a competitive, multi-buyer, multi-seller framework. It is enabled by the Electricity Regulation Amendment Act 38 of 2024 (ERAA), which came into force on 1 January 2025 and laid the statutory foundation for SAWEM.

According to Baker McKenzie, the Market Code — drawing on models used in advanced competitive markets — will regulate participation rules for generators, traders and "prosumers"; use-of-system charges and grid access methodologies; market transparency, disclosure and financial settlement mechanisms; and system balancing requirements to ensure reliability as renewable penetration increases. The phased rollout is targeting full market functionality by 2031.

The National Transmission Company of South Africa (NTCSA), currently an Eskom subsidiary, has developed the Market Code and submitted it for NERSA approval. NERSA's own website currently lists an open invitation to submit written comments on the Market Code and Market Rules application by the NTCSA, confirming the regulatory process is actively underway.

The NERSA Trading Rules: A Parallel Track

Running alongside the Market Code, NERSA published revised draft Electricity Trading Rules (Version 01, dated 12 April 2026) together with a consultation paper, with stakeholders invited to submit comments by 23 May 2026. These rules govern the bilateral trading market — the mechanism most immediately relevant to C&I buyers contracting via wheeled PPAs today.

The Trading Rules apply to traders, network service providers (NSPs), registered generators supplying wheeled energy through PPAs, as well as licensed importers and exporters. They are being implemented in two phases: Phase 1 allows transmission and high-voltage customers to source part of their energy from traders, while managing risks associated with early market opening and metering readiness for smaller customers.

Critically for C&I property owners, existing PPAs and Electricity Supply Agreements signed during Phase 1 will remain valid, with traders required to comply with the Market Code going forward. This provides an important degree of contract continuity for businesses signing funded solar and PPA deals today.

The Tariff Backdrop: Why Locking In Now Makes Commercial Sense

The urgency to contract is amplified by the NERSA-approved Eskom tariff increases. Direct Eskom customers face an 8.76% tariff hike effective 1 April 2026, followed by an 8.83% increase for the 2027/28 financial year — a compound increase of over 18% across two years. Municipal customers will see their increases from 1 July 2026. With fixed-rate solar PPAs and funded BESS installations, C&I buyers can hedge against this trajectory immediately.

Key Implications for C&I Buyers and Commercial Property Owners

• PPAs remain the primary contracting vehicle. The Trading Rules explicitly recognise registered generators supplying wheeled energy through PPAs. Contracts signed now under the bilateral framework are protected through the Phase 1-to-Phase 2 transition.
• Trader licensing matters more than ever. Under the new rules, traders must obtain a NERSA-issued trading licence and comply with the revised framework. C&I buyers should ensure their IPP or developer counterparty holds — or is actively pursuing — a compliant trading licence.
• BESS is increasingly strategic. The Market Code's system balancing requirements create an explicit incentive for dispatchable, storage-backed generation. BESS assets behind the meter or paired with solar are positioned to benefit from time-of-use arbitrage and future ancillary services revenue streams as the market matures.
• Non-bypassable charges (NBCs) require scrutiny. Commentary from industry analysts notes that the revised rules include broad non-bypassable charges (NBCs) covering network costs, legacy REIPPP costs, ancillary services, and social obligations. These structurally limit the energy portion a third-party supplier can displace — making the economics of each PPA site-specific and requiring careful modelling.
• Transition risk is real but manageable. Full private market participation may only materialise several years into the 2030s, despite the April 2026 launch. However, the bilateral PPA and wheeling market — which SolarXgen operates within — is live and legally recognised under the current framework.

Eskom's Dual Role: Opportunity and Risk

A tension running through the new framework is Eskom's position as both the incumbent grid operator and an active market participant. Eskom has challenged the five trading licences granted by NERSA in 2025 — a legal action that was stayed, not withdrawn, in February 2026, pending finalisation of the regulatory framework. The revised Trading Rules are widely seen as partially accommodating Eskom's concerns, including tight volume restrictions and deferred virtual wheeling. C&I buyers and their advisors must monitor how this dynamic evolves, particularly regarding grid access timelines and wheeling tariffs.

The SolarXgen Perspective: Contract with Confidence

For commercial property owners, the April 2026 Market Code commencement is not a reason to pause — it is a reason to move decisively. The bilateral PPA and funded solar model remains the most accessible and commercially sound pathway to energy cost certainty. The regulatory framework explicitly protects contracts entered during the transition. With tariffs rising, grid reform underway, and BESS costs continuing to fall, the risk of inaction outweighs the risk of contracting.

SolarXgen structures funded solar, PPAs, and BESS solutions that are Market Code-ready and designed to perform across the full transition period to 2031 and beyond. Now is the time to act.