City of Cape Town Expands Wheeling Network Access: 5 New Zones Approved

The City of Cape Town's electricity wheeling programme — South Africa's most advanced municipal energy-trading framework — is expanding its network reach in 2026, with new distribution zones being opened to qualifying commercial and industrial users. For C&I property owners and energy buyers in the metro, this is not a future promise: it is an operational market that is growing, and access decisions made now will shape energy cost structures for the next decade.

Where the Programme Stands as of March 2026

Cape Town's wheeling initiative officially opened its grid to private energy traders in March 2025, following a year-long pilot that successfully transferred electricity between private generators and commercial off-takers across the city's distribution network. The programme has since scaled materially.

By September 2025, the city had facilitated the trade of 861,162 kWh of privately generated electricity across its grid — up from the 562,800 kWh wheeled during the pilot phase. Additional participants signed up through the second half of 2025, with a pipeline of new generators expected to come online in early 2026.

The original pilot involved three energy traders — Enpower Trading, Etana Energy, and Equites Property Fund — wheeling solar power between generators at sites including Constantia Village mall, FairBridge Mall in Brackenfell, and Equites' Parow Industria facility, to off-takers including Shoprite's head office and Growthpoint Properties in the CBD.

What the Zone Expansion Means for Commercial Property

Cape Town's wheeling model operates on a Use of System (UoS) framework: generators and off-takers enter formal bilateral or multilateral agreements, pay a network access fee to the City, and transact private power at negotiated PPA rates — typically meaningfully below the City's retail tariff. The City's 2025/26 tariff book confirms wheeling-specific TOU rates, with high-peak excess energy feed-in at 577.19 c/kWh and off-peak rates at 79.82 c/kWh, reflecting how the programme is embedded in the City's formal tariff structure.

Expanding the number of qualifying network zones directly increases the pool of eligible off-takers. For a warehouse in Parow, a logistics hub in Bellville, or a retail centre in the Southern Suburbs, zone approval is the gate-keeping step that determines whether wheeled power is technically accessible at all. More zones mean more commercial properties can enter PPA negotiations with independent power producers — without needing rooftop solar or on-site generation of their own.

Key eligibility reminder: Wheeling currently requires a medium- or high-voltage connection (11 kV to 132 kV). Low-voltage, single-phase commercial users are not yet eligible — but the programme's expansion trajectory suggests this threshold will be reviewed as the market matures.

The Commercial Opportunity: PPA Access Without On-Site Generation

For C&I tenants and property owners who have been unable to install rooftop solar — due to structural constraints, lease complexity, or heritage restrictions — wheeling via Cape Town's expanding grid offers an alternative route to cost-certainty and renewable energy procurement. A wheeling-backed PPA with a licensed energy trader can deliver:

• Fixed or index-linked tariffs below the City's retail rate, providing a hedge against ongoing municipal tariff increases
• A credible green energy supply chain for ESG reporting and scope 2 emissions accounting
• No capital expenditure on generation equipment — the commercial relationship is purely off-taker
• Compatibility with on-site BESS for peak-shaving, which remains separately valuable regardless of wheeling access

The City's stated goal is to secure 350 MW from independent power producers within its distribution area — reducing Eskom bulk dependency and building energy price resilience for local businesses. Zone expansion is the physical mechanism that enables this pipeline to grow.

BESS Remains Critical — Even in a Wheeling Market

Wheeling delivers energy when the generator is producing. It does not eliminate demand charges, TOU peak exposure, or the risk of supply interruptions. For commercial properties in Cape Town's newly opened zones, a battery energy storage system (BESS) paired with a wheeling PPA creates a complete energy solution: procured renewables provide base cost reduction, while BESS handles peak-demand management and supply continuity.

As Eskom's municipal bulk tariffs increased by 11.32% from July 2025 — on top of the 12.74% direct-customer increase applied in April 2025 — the financial case for structured energy procurement has never been stronger. Every rand saved on peak-period municipal electricity draw translates directly to operating margin.

What C&I Property Owners Should Do Now

Zone expansion creates a narrow window of first-mover advantage. Generators and traders are building their off-taker books now — early participants typically secure better PPA pricing and longer contract terms before competition for available generation capacity increases.

1. Confirm your network zone eligibility — check whether your site falls within an approved wheeling zone and whether your connection is at medium or high voltage.
2. Request a wheeling feasibility assessment — understand the UoS charges applicable to your site and model the net saving versus your current City tariff.
3. Engage a licensed energy trader — wheeling transactions require a formal three-party structure (generator, trader, off-taker) and a City-approved Use of System Agreement.
4. Model BESS alongside your wheeling PPA — a funded BESS solution can be layered on top to capture demand-charge savings and provide supply resilience independently of wheeling availability.