Delta and Trane Unveil 800 Volt DC Power Systems for Next-Gen AI Data Centres

A New Power Standard for AI Factories

At NVIDIA's GTC 2026 conference in San Jose, two major infrastructure partners unveiled systems designed around a radical shift in how AI data centres receive and distribute electricity. The 800 volt direct current architecture, championed by NVIDIA, replaces traditional alternating current distribution with a streamlined approach that converts grid power directly to 800 VDC at the facility perimeter, eliminating multiple conversion stages and slashing energy losses.

Delta's Full-Stack Approach

Delta Electronics presented an end-to-end infrastructure stack anchored by a 660 kilowatt in-row power rack featuring six 110 kilowatt power shelves, each with integrated battery backup totalling 480 kilowatts of embedded capacity. On the cooling side, Delta debuted a 2.4 megawatt in-row coolant distribution unit with self-contained 800 VDC electrical pumps and redundant design, alongside a 3 megawatt liquid-to-liquid unit that scales to eight units operating as a group.

Delta also showcased a microgrid approach using a solid-state transformer that converts medium-voltage AC to 800 VDC at up to 98.5 percent efficiency, paired with solid oxide fuel cells that could reduce deployment timelines from years to months.

Trane's Thermal Breakthrough

Trane Technologies announced nearly 10 percent improvement in overall thermal management performance for its gigawatt-scale reference design, freeing up 22 megawatts of cooling capacity that can be redirected to computing power. The company also introduced two new reference designs engineered to integrate with NVIDIA's Omniverse DSX Blueprint, building on its original architecture announced in October 2025.

Industry-Wide Momentum

The announcements arrive alongside contributions from Texas Instruments, Eaton, Schneider Electric, Vertiv, and others, all building around NVIDIA's Vera Rubin DSX AI Factory reference design. The 800 VDC approach enables 85 percent more power through the same conductor size and reduces copper requirements by 45 percent, supporting rack densities beyond one megawatt.