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The project supports the development of Start Campus’s 1.2-gigawatt (GW) facility, designed to meet the growing demand for AI, cloud computing, and high-performance workloads across Europe. As part of the project, Start Campus selected Legrand and its specialist cooling brand, USystems, to deploy ColdLogik rear-door heat exchanger (RDHx) technology, enabling highly efficient rack-level cooling aligned with the campus’s sustainability objectives and high-density performance requirements.
Start Campus designs, builds, and operates large-scale digital infrastructure for next-generation workloads. Its flagship campus in Sines is powered by 100% renewable energy and targets an industry-leading Power Usage Effectiveness (PUE) of 1.1 and a Water Usage Effectiveness (WUE) of 0, leveraging seawater cooling to support high-density AI environments.
Robert Dunn, CEO of Start Campus, commented:
“These are very technically challenging projects, so we need to work with the best in the business to meet those complex challenges. We've been able to work with very good partners, such as Legrand, to deliver for our customers.”
Efficient Cooling for High-Density Infrastructure
USystems ColdLogik RDHx provides rack-level cooling by removing heat directly at its source.
Installed at the rear of server racks, the system uses an integrated liquid-cooling circuit to cool exhaust air, removing heat before it enters the data hall and significantly reducing reliance on traditional air-cooling systems. This close-coupled method improves thermal efficiency, delivers 80–90% power savings compared with conventional cooling, and supports higher rack densities without major infrastructure changes.
A Long-Term Technology Partnership
Delivering infrastructure at this scale requires cooling systems that balance high performance with operational efficiency. Legrand’s RDHx technology dynamically adjusts cooling capacity in real time, enabling autonomous operation while ensuring consistent thermal performance across the facility.
Beyond the deployment of technology, the collaboration represents a long-term lifecycle partnership between the two organizations.
“A major advantage for our customers is the full lifecycle partnership we are able to offer,” said Rita Lourenço, Key Account Manager – Critical Power at Legrand.
“This includes knowledge sharing, maintenance support, proactive problem detection, and long-term collaboration beyond commissioning.”
Through this partnership, Start Campus and Legrand are delivering efficient, scalable digital infrastructure to support the rapid growth of AI, cloud services, and high-performance computing.
The solution will also be showcased at upcoming industry events, including DCD Connect Madrid 2026 (6–7 May) and Data Centre World Frankfurt 2026 (6–7 May), where attendees can explore how advanced rear-door cooling supports high-density AI environments.
