Trane Technologies completed a successful laboratory demonstration of the industry’s first 800-volt direct current (800 VDC) cooling architecture designed to support the mission-critical energy and thermal demands of next-generation AI factories and gigawatt-scale data centres.
First validated on a high-efficiency chiller platform, the proof-of-concept demonstrates the performance, efficiency and design advantages of direct current (DC) power distribution in mission-critical cooling plants.
Trane Technologies, in collaboration with Eaton Corporation and Danfoss, modified an existing high-efficiency chiller to operate with an 800 VDC feed and validated the potential for up to 2% improvement in system efficiency over conventional AC counterparts while delivering over 1,000 tons (3.5 MW) of cooling capacity.
Traditional AC-powered cooling systems rely on multiple stages of power conversion to operate compressor drives, pumps and fans, with each step introducing energy losses.
By accepting direct 800 VDC input, power conversion losses are reduced and overall efficiency is improved.
For gigawatt-scale AI data centres, even modest efficiency gains can translate into meaningful power capacity to support additional server racks and compute workloads, improving performance per megawatt.
In a typical 200 MW data centre, this efficiency gain could unlock up to 1.8 MW of additional compute capacity, enough to support up to fifteen 120 kW racks or up to three 600 kW racks.
With broad applicability across thermal management technologies, this successful demonstration paves the way for a fully DC-powered mechanical cooling infrastructure and integrated chiller plants to deliver further optimization and efficiency improvements.
Trane Technologies senior vice president, Mauro J Atalla, said that as AI workloads push data centre power densities to higher levels, optimising every link in the energy chain is vital.
“This demonstration marks an important step forward in rethinking how cooling infrastructure can integrate with emerging DC power architectures," he said.
"By eliminating conversion losses and designing for higher DC voltage architectures, we are helping data center operators reduce the power needed by non-IT equipment and maximise compute capacity per megawatt.”
The 800 VDC demonstration builds on Trane Technologies’ continued investments in comprehensive data centre thermal management solutions.
The company’s portfolio spans high-capacity air- and water-cooled chillers, modular and liquid cooling infrastructure, Coolant Distribution Units (CDUs), Computer Room Air Handlers (CRAHs), fan coil walls, digital twin architectures, automated chiller plant controls and reference designs.
As customer needs evolve, Trane Technologies sees long-term opportunity to apply advanced power and controls innovation across multiple cooling solutions, helping data centre operators balance efficiency, flexibility and scalability in increasingly demanding AI environments.