Envision Energy says its 800-volt DC power system is running at a commercial AI data center in China
Its Dubhe design aims to fit more AI racks into the same floor space by cutting conversion stages and copper cabling.
Envision Energy says it has finished the first commercial data center rollout of a fully integrated 800-volt DC power architecture. The Dubhe Controller, paired with its Dubhe Energy Foundation Model, has run since August at the Galaxy AI facility in Ulanqab, Inner Mongolia. The design takes 10 kV medium-voltage AC straight to an 800 V DC bus through a solid-state transformer, cutting the number of conversion stages that current facilities need. Built-in battery storage handles sudden GPU load swings and provides short-term backup, and the firm says the setup allows denser AI racks in the same floor space with less copper cabling. The Galaxy campus is slated to reach 3 GW and eventually host up to one million AI accelerators, and Envision plans to bring the same 800 V approach to its Mission Gobi program, which targets 5 GW of desert-based green AI capacity by 2030.
Why it matters
For operators of large AI data centers, the reported change is fewer power conversion stages between the medium-voltage grid and the accelerators, along with built-in batteries to absorb sudden load swings. The claim is a single commercial deployment at one Chinese facility, and the company's stated gains in density and efficiency have not been independently measured in the facts provided. If the approach holds up at the planned scale of the Galaxy campus and the Mission Gobi program, it would point the industry toward higher-voltage DC distribution inside data centers.
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