Inside the Push to Bring DC Power to Data Centers

Why It Matters

Reducing conversion losses directly lowers operating costs and carbon footprints for hyperscale AI workloads, accelerating DC adoption across the industry. Unified standards will remove regulatory barriers, enabling faster deployment in the United States and globally.

Key Takeaways

• DC distribution cuts conversion losses, boosting data center efficiency.
• Current/OS and ODCA alliance streamlines standards development.
• IEC and NFPA updates could enable US adoption by 2029.
• Hyperscale centers could save 10 MW per 1 GW campus.
• Nvidia and OCP showcase 1 MW, ±400 VDC rack prototypes.

Pulse Analysis

Data centers today consume more electricity than any other commercial sector, and the surge in AI training and inference has amplified that demand. While every server internally runs on direct current, the power typically arrives as alternating current and must be converted at multiple points, creating measurable losses. Shifting the AC‑to‑DC conversion to the facility’s edge eliminates redundant stages, allowing DC‑to‑DC converters— which can exceed 95 % efficiency—to handle the final step. For a 1 GW campus, a modest 1 % gain translates into roughly 10 MW of avoided waste, directly improving profit margins and sustainability metrics.

The technical hurdles have largely been cleared; high‑voltage DC racks such as the OCP Mt. Diablo prototype already demonstrate ±400 V distribution capable of powering 1 MW of equipment. The remaining obstacle is a coherent regulatory framework. The Current/OS Foundation and the Open Direct Current Alliance (ODCA) are jointly lobbying the International Electrotechnical Commission for semiconductor‑based circuit‑breaker standards and collaborating with the National Fire Protection Association on the 2029 National Electrical Code revision. A harmonized standard will give utilities, insurers, and operators confidence to invest, especially in the United States where code adoption proceeds state by state.

Industry analysts expect the first DC‑native data centers to be operational by late 2027, with broader rollout possible within five years if the standards trajectory stays on schedule. Beyond energy savings, DC architectures reduce copper usage, simplify rack design, and improve availability by minimizing points of failure. European groups are also positioning their approach as a counterweight to Chinese DC consortia, emphasizing safety and autonomy. Operators that adopt DC early can capture cost efficiencies, meet ESG targets, and future‑proof their facilities against the growing power intensity of AI workloads.