When NVIDIA shipped the GB200 NVL72 at 132 kW per rack, it didn't just change GPU compute. It broke the electrical distribution assumptions that data centers have relied on for two decades.
Standard 225A busway handles roughly 40 kW per tap box. At 132 kW, you need 3-4 parallel feeds or a complete redesign to 600A+ distribution systems. Floor loading exceeds 250 lbs/sq ft in compute zones. Traditional UPS battery runtime drops to single digit seconds.
The math: A single 2,500 kVA utility transformer serves about 19 racks at 132 kW. For a 500-rack deployment, you need 26+ transformers. Most utility interconnection agreements weren't designed to accommodate that density of step-down infrastructure.
This is why electrical infrastructure now consumes 40-50% of total data center build cost at high density. According to JLL, average construction runs $11.3M per MW. Electrical and power distribution is the largest single line item.
The facilities being designed today for 2027-2028 occupancy face a choice: engineer for current GPU densities and accept a 3-year useful life, or overspec the electrical infrastructure and absorb higher upfront costs for a facility that can handle the next two GPU generations.
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