Envision Energy has announced what it describes as the world’s first commercial deployment of an integrated 800 V DC power system at a large-scale artificial intelligence data center. The system is operating at the company’s Galaxy AI data center campus in Ulanqab, China.
The architecture combines solid-state transformers (SSTs), battery energy storage systems (BESS) and equipment that adjusts direct-current voltage for computing hardware. Envision’s Dubhe Controller, supported by the company’s Dubhe energy AI model, coordinates the transformers and batteries in real time to align power supply with computing demand and sudden changes in load.
The system converts electricity from 10 kV medium voltage to an 800 V DC bus through SSTs. Battery storage provides secondary power support and backup over minute-scale periods. Envision said millisecond-level coordination between the SST and storage helps absorb fluctuations generated by the graphics processing units used for data-center computing.
Higher-voltage DC architectures are being pursued by data-center developers and technology companies seeking greater computing density. Conventional facilities generally distribute AC power to the edge of the computing rack, where it is converted to DC. Envision says the higher-voltage DC approach can support more computing power per rack and within the same physical footprint.
The Galaxy campus began operations in August 2026 and has a planned capacity of 3 GW. According to Envision, more than 80% of its power is expected to come directly from renewable sources. The company plans to expand the approach through its Mission Gobi initiative, which targets 5 GW of green AI data-center capacity in desert regions worldwide by 2030.
Envision is also pursuing export markets. At The smarter E Europe 2026 in Munich, the company displayed a model of its 2.5 MW SST with specifications including a 10/13.8 kV AC input, an 800 V DC output and 98.5% conversion efficiency.
Kevin Huang, Envision Energy’s senior vice president and president of Energy Storage and AIDC Power Systems, said AI data centers require systems capable of coordinating renewable generation, energy storage and the grid with computing demand. He said the integrated 800 V DC system is powering live computing workloads and connects renewable power supply with data-center demand in an operational setup.
Sources: pv magazine.