Envision Deploys World's First 800V SST High-Voltage DC System for Commercial AI Data Centers
Envision Energy has deployed the world's first integrated 800V high-voltage DC power supply system for commercial operation at its Ulanqab base. The system integrates the Tianshu controller, a solid-state transformer (SST), DC energy storage, and DC/DC conversion. This deployment marks a significant infrastructure milestone by creating a complete closed-loop for AI data centers, connecting green energy generation directly to high-performance computing loads. It addresses the skyrocketing power density challenges of modern AI infrastructure. The Ulanqab Xinghe base, which opened in August with a planned capacity of 3 GW, will source over 80% of its electricity directly from green energy. The architecture utilizes solid-state transformers to handle the high-voltage DC distribution efficiently.
## BACKGROUND
A Solid-State Transformer (SST) uses power electronics and high-frequency transformers to convert and control electrical power dynamically, offering high efficiency and smart grid integration compared to traditional iron-core transformers. Meanwhile, 800V high-voltage DC power architectures are increasingly adopted in AI data centers to minimize conversion losses and support dense server loads.