As single-rack power climbs from 11 kW toward 142 kW — and even 600 kW — data center power distribution is being pushed to a breaking point.
As single-rack power climbs from 11 kW toward 142 kW — and even 600 kW — data center power distribution is being pushed to a breaking point.
Over the past year, the power scale of the data center has been rewritten. The Uptime Institute's 16th Global Data Center Survey shows average power density for a standard rack reached 11 kW in 2026, up from 9 kW in 2025 — but that's the story for "ordinary" racks. In AI training clusters, the numbers live on another scale: NVIDIA's GB300 NVL72 rack hits 142 kW under the official reference architecture; the Vera Rubin NVL72 platform, which entered full production in June 2026, is estimated by industry supply-chain sources at 190–230 kW per rack; and the Rubin Ultra NVL576 "Kyber" rack expected in the second half of 2027 points at roughly 600 kW.
The bottleneck is no longer the chip — it's how to get power in and heat out. Air cooling essentially fails above 50 kW, and cold-plate liquid cooling has become mainstream — Schneider Electric data shows cold-plate systems accounted for about 55% of the liquid-cooling market in 2026. But more fundamental than cooling is the distribution architecture itself: conventional AC distribution is approaching both physical and economic limits in front of hundred-kilowatt racks.
This March, DC distribution vendor Enteligent published a technical white paper proposing a DC-native architecture of "800VDC facility-level distribution + rack-level 800VDC-to-50VDC conversion": power moves through the building at 800 volts DC, then converts to the 50-volt DC bus servers need inside the rack. CEO Sean Burke noted that AI is fundamentally reshaping data center power demand, and that a DC-native architecture better matches the true electrical structure inside modern servers — servers are DC devices to begin with, and layer upon layer of AC-DC conversion is pure efficiency loss.
The giants are moving too. A September report from market researcher SNS Insider disclosed that Eaton already has nearly 20 medium-voltage solid-state transformer pilot projects supporting 800V DC distribution systems, won hyperscale customer orders in the second half of 2026, and expects shipments by the end of 2027. AC or DC — the next few years will settle it in real projects.
The most direct beneficiary of the distribution rebuild is busway and busbar. A MarketsandMarkets report published this August put numbers on it: the global data center busway market stands at $3.7 billion in 2026 and will reach $8.6 billion by 2032, a 15.1% CAGR. AI data centers are the largest load type, hyperscale is the largest and fastest-growing data center type, 800–1000A is the largest current-rating segment, and copper conductors dominate. Schneider Electric, Legrand (Starline), Eaton, ABB, Siemens, GE Vernova, and Vertiv are named as key players.
A companion report on the data center busbar market: $1.38 billion in 2026 growing to $3.01 billion by 2032, a 14.0% CAGR, with the AI segment growing at 18.8% and Asia-Pacific leading all regions at 16.4%.
And then there's the signal from the field: a data center power practitioner wrote on an industry platform in September that just four or five high-power GPU servers in a single rack can blow through conventional distribution thresholds, forcing projects toward three-phase PDUs above 125A; custom high-density PDUs in the 125–400A range are shifting from "special order" to "standard infrastructure." Meanwhile, incumbent vendors' 12-to-20-week lead times for such high-current custom solutions are becoming the choke point of AI data center buildouts.
Read the trend, then look at our product line: busway, cable tray, low-voltage switchgear, distribution panels — precisely the "power highways" at the heart of this AI infrastructure buildout. A few conclusions worth noting:
First, high-current, high-ampacity ratings (800A and above) will become the mainstream language of data center projects, and thermal design plus intelligent monitoring in busway systems will command growing value.
Second, 800V DC distribution is moving from concept to pilot — and our technology reserves in DC busbar sit squarely in the first half of that trend.
Third, when lead time becomes a project's life-or-death line, suppliers who "can customize and deliver fast" will earn an outsized premium — and that is exactly the strength of domestic manufacturing with rapid response.
In the second half of the AI compute race, the winner won't be whoever has the stronger chip, but whoever gets power in — reliably and fast. Power distribution is moving from backstage to center stage.
