South Africa’s Competition Tribunal has approved the acquisition of the JNB11 data center north of Johannesburg by Main Street 2156, an entity managed by African Infrastructure Investment Managers Proprietary Limited (AIIM), giving the investment vehicle sole control of one of Vantage Data Centers’ facilities at its Johannesburg 1 campus. The Tribunal approved the transaction without conditions on Sept. 14, according to its case record, after South Africa’s Competition Commission reviewed the deal and referred it for final approval. The commission concluded that the transaction was “unlikely to substantially lessen or prevent competition in any market.” The approval gives Main Street 2156 control of all issued shares held by Vantage Data Centers South Africa in both the operating company, Opco, and the property company, Propco.

Opco runs the data center, while Propco owns the building and holds the registered lease rights associated with the facility. That gives the buyer control across the physical property and the operating entity rather than exposure to only one layer of the asset. For investors tracking African digital infrastructure, the distinction offers a clearer view of how data centers can function simultaneously as technology infrastructure and long-duration real estate assets.

Johannesburg Campus Adds More Capacity

JNB11 sits within Vantage’s larger Johannesburg 1 campus in Waterfall City, north of Johannesburg, where the operator plans a three-data-center development across roughly 30 acres. At full buildout, the campus will support 120 MW of critical IT load, putting the JNB11 transaction inside a much broader capacity expansion story rather than treating the facility as an isolated asset. 

Meanwhile, the second facility at the campus, JNB12.1, has reached completion, according to South African real estate investment trust Attacq, which developed the project through a joint venture with Vantage Data Centers. Attacq said in its latest earnings results that “development was complete and would support an initial total electrical load of 12 MW, ramping to 16 MW over time.” Attacq’s share of the data center property carries a value of ZAR 589 million, equivalent to about $36.25 million, according to the company’s reported results. The completion gives the Johannesburg 1 campus another operating capacity milestone as ownership and development activity continue to evolve around the site.

The JNB11 transaction arrives as South Africa’s data center market enters a period of sustained capital expansion, with demand increasingly tied to cloud computing, artificial intelligence, IoT, big data and broader digital-economy adoption. Arizton estimates that the national data center market was worth $2.55 billion in 2025 and projects it will reach $5.28 billion by 2031, representing a 12.90% compound annual growth rate.