Nvidia's Sean James says data centers must become invisible infrastructure. His firm's new cooling design eliminates water use and turns data centers from grid liabilities into stabilizers.
Sean James, a distinguished engineer in energy systems at Nvidia, spent 25 years at Microsoft designing data centers. In an essay published this week, he laid out a vision: make data centers as unremarkable as electrical substations. The goal, he wrote, is to get them to disappear. Not physically. He wants them to blend into the background of daily life.
That disappearance matters because data centers are currently a growing source of grid risk. In May, the North American Electric Reliability Corporation issued a Level 3 alert, its highest tier, after more than 1,000 megawatts of data center load dropped off the grid in seconds. The cause: voltage dips common on the grid. Data centers, designed to protect servers, let go of the grid and jump to onsite batteries. The computers ride through without a blink. The grid takes the hit.
James said the industry has been making progress. PUE, an efficiency metric, has dropped from 3-5 in the 1990s to 1.2-1.5 today. Packaging waste has been cut. Safety has improved. "Those of us who design them are still not satisfied," he wrote. "Chasing the next breakthrough is what gets us out of bed in the morning."
Nvidia, where James now works, went public this summer with a cooling design that runs coolant at up to 113 degrees Fahrenheit, hotter than a hot tub. At that temperature, heat exchangers and outside air can carry the heat away in most climates. No cooling towers are needed. Cooling water use drops to zero. The company says the technology eliminates a major source of water demand and noise.
The broader push is to turn data centers from grid liabilities into grid assets. James described designs that flex capacity back when the grid is stressed, ride through voltage dips instead of letting go, and replace diesel generators with batteries and fuel cells.
James acknowledged that criticism of data centers is often accurate. "Data center designers can't improve in a vacuum," he wrote. He called on local jurisdictions to modernize construction rules so development meets community needs.
Nvidia has an Alpha Score of 76, labeled Strong. Its stock rose more than 2% today. Microsoft, where James spent most of his career, has an Alpha Score of 72, labeled Moderate. Read more on the NVIDIA profile and MSFT stock page.
The essay comes as data center demand surges, driven by AI workloads. James's message is that the next wave of design can make data centers unremarkable, even welcome. "Substations and water towers are critical to modern life," he wrote. "They surround us, quietly hidden in plain sight."
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