Equinix is scaling its Johannesburg data center to 24MW capacity, but R7.5 billion ($1 billion) of approved expansion land remains undeveloped, signaling site constraints.
Equinix is expanding its Johannesburg 1 data centre to 24MW to meet surging AI and cloud demand, but is holding back development on land acquired in Johannesburg and Cape Town until market demand becomes clearer.
The US digital infrastructure company entered South Africa in 2024 with a $160 million investment in JN1, its first international business exchange facility in the country, located in Germiston on the East Rand near OR Tambo International Airport. Phase one is now complete at 4MW, with two additional phases of 10MW each planned.
"Since inception, we've received a great reception from the South African market," said Sandile Dube, managing director for South Africa at Equinix, in an interview with ITWeb during a facility tour.
Equinix has earmarked R7.5 billion for South African expansion and acquired additional land in Johannesburg and Cape Town earlier this year. Dube was direct that neither site is currently under development. "The additional land parcels give us the option to expand over a period of time as the business evolves and demand develops," he said. The immediate focus remains the phased build-out of Johannesburg 1, with future capacity additions dependent on customer requirements.
This cautious approach stands in contrast to other South African data centre announcements this year. Cape Town approved two hyperscale facilities totalling approximately 174MW three weeks ago. Durban's council approved exploratory agreements for a project referenced at 400MW. Microsoft has committed more than R26 billion across Johannesburg, Cape Town, Durban, and a planned Centurion facility.
Equinix's complete Johannesburg build at 24MW amounts to roughly one-seventh of what Cape Town approved in a single decision — and two-thirds of it remains conditional. For a company with the financial capacity to move faster, this sequencing suggests a measured assessment of how quickly South African enterprise demand will actually materialise.
Dube emphasised that AI is shaping how Equinix provisions its South African infrastructure. Johannesburg 1 was built specifically for the power and cooling densities AI workloads require, including liquid-cooling infrastructure. "We've been quite fortunate in that we are relatively new in the South African market and therefore the facility that we are in today has been designed and built with that in mind," he said.
This timing advantage matters. Turner & Townsend's data centre construction cost index identified 2025 as the inflexion point from air-cooled cloud facilities to high-density liquid-cooled builds for AI, and found that 83 per cent of industry leaders surveyed considered local supply chains unprepared for the specialised materials, equipment, and expertise advanced cooling demands. Operators retrofitting existing halls face this constraint directly. Equinix does not.
Johannesburg ranks as the third most expensive African market for data centre construction at $10.06 per watt, behind Lagos at $10.50 and Cape Town at $10.33, according to Turner & Townsend's index.
Dube was emphatic that the proposition goes beyond straightforward colocation. Equinix positions JN1 as an access point to a global ecosystem of more than 10,500 customers spanning cloud providers, systems integrators, and connectivity companies. "South Africa is already the gateway to the rest of Africa," he said, citing the country's position between the Atlantic and Indian oceans and its comparatively developed digital infrastructure.
Equinix's South African approach differs from its West African entry, which came through acquisition. In South Africa, the company built greenfield, with Johannesburg 1 as the foundation.
Africa accounts for roughly one per cent of the world's data centres. McKinsey projects continental capacity needs to rise from approximately 0.4 gigawatts to as much as 2.2 gigawatts by 2030. Whether that materialises depends less on announced budgets than on how many operators, having secured the land, decide the demand justifies breaking ground.