Digital Realty Teraco JB4 | Next-Generation Colocation & Digital Infrastructure Campus

Status: Completed (Major expansion phase finished August 2025)   |   Location: Ekurhuleni (East of Johannesburg), South Africa

Project Overview

The Teraco JB4 Bredell Campus expansion is a defining landmark in Africa's digital infrastructure, solidifying Johannesburg's position as the continent's primary digital gateway. As a subsidiary of Digital Realty, Teraco completed a major expansion phase in August 2025, bringing the total critical IT load of the JB4 facility to a commanding 50 MW, making it the largest standalone data center in Africa. This milestone is crucial as it directly addresses the accelerating demand from global hyperscale cloud providers and the domestic enterprise shift toward hybrid cloud and high-performance computing.

The facility is built to stringent global hyperscale specifications and is designed to cater directly to the emerging artificial intelligence (AI) and machine learning workloads. A key innovation is the support for liquid-to-liquid cooling, allowing clients to deploy high-density, GPU-intensive AI clusters that require superior thermal management beyond traditional air cooling.

Sustainability is a cornerstone of the JB4 design. Facing South Africa's dual challenges of power stability and water scarcity, the facility incorporates a state-of-the-art zero-water, closed-loop chilled water cooling system. This technology, combined with AI-enabled optimization, ensures industry-leading energy efficiency (PUE) without consuming precious fresh water for ongoing cooling operations. Furthermore, Teraco is actively developing its own 120MW solar PV plant to supply its campuses through energy wheeling, a pioneering move to secure green, reliable power for the massive IT load.

Strategically located in Ekurhuleni, JB4 is a vital node of Platform Teraco, offering access to a dense ecosystem of over 250 carriers, the NAPAfrica Internet Exchange Point, and direct cloud on-ramps. Its robust connectivity, coupled with its immense, future-ready capacity, reinforces South Africa's role as the indispensable springboard for cloud and content delivery into the wider sub-Saharan African region.

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