Envision Energy deploys 800V DC power system for AI data center in Inner Mongolia

New Power System Deployment

Envision Energy has completed the commercial deployment of an integrated 800-volt DC power system at its Galaxy AI data center in Ulanqab, Inner Mongolia, China. The system, supported by the Dubhe Controller and Dubhe Energy Foundation Model, has been under testing since August.

This deployment represents a shift from traditional data center power architectures, which typically involve multiple power conversion stages from the grid to usable supply.

Technical Architecture and Efficiency

The Dubhe technology converts power directly from 10kV medium-voltage AC to an 800V DC bus. This direct conversion reduces the number of power conversion stages, which increases efficiency and decreases the physical size of the power conversion apparatus.

Key components include a solid-state transformer (SST) for stable 10kV to 800V DC conversion, battery storage for second-scale power support and minute-scale backup, and millisecond-level coordination between SST and storage to manage GPU load fluctuations.

Impact on AI Data Centers

The 800V DC system supports higher-density AI racks, allowing for more computing power within the same physical footprint. This is crucial for AI data centers that require significant computational resources.

The Galaxy campus plans to scale to 3GW capacity and eventually support up to one million AI accelerators, with the new power system instrumental to this expansion. The system is also designed to integrate with renewable energy sources.

Future Expansion Plans

Envision Energy plans to roll out this 800V DC technology in its Mission Gobi initiative. This initiative targets 5GW of green AI data center capacity in desert regions by 2030.

The company reports that the Dubhe tech system is performing as expected, indicating its potential for broader application in large-scale AI infrastructure.