VEIR Demonstrates 3 Megawatts of Superconducting Power for AI Data Centres
VEIR, a Massachusetts superconductor startup, has demonstrated 3 megawatts of power delivered through a single low-voltage superconducting cable, aimed at the power-density problem inside AI data centres. The company reports carrying that power in far less space than copper would need, and plans to install its system in working data centres during 2026. VEIR is backed by Microsoft’s Climate Innovation Fund.
VEIR moved 3 MW through one low-voltage cable
On 12 November 2025, VEIR announced that it had delivered 3 megawatts of electricity through a single low-voltage superconducting cable in a simulated data centre built near its headquarters in Woburn, Massachusetts. The demonstration is the first generation of a programme the company calls STAR, for Superconducting Technology for AI Racks.
The target is a specific bottleneck. As individual AI server racks draw more power, the copper busways and cables that feed them grow bulky and take up floor space that operators would rather fill with computing hardware. VEIR’s pitch is that a superconducting cable carries the same power in a much smaller cross-section.
The claimed gains are space and distance, not just efficiency
VEIR reports that its cable moves the power in about 20 times less space than copper, and can carry it roughly five times farther. Those two figures, rather than energy savings alone, are the commercial argument for using a cooled superconductor inside a building.
Pilots are planned for 2026, commercial launch for 2027
VEIR says it intends to move from the simulated demonstration to pilot installations in working data centres during 2026, with a commercial launch targeted for 2027. The company is backed by Microsoft’s Climate Innovation Fund among other investors.
VEIR’s earlier work focused on overhead superconducting transmission lines, and it appears in our project tracker among companies applying HTS to power delivery. The move toward data centres reflects where large new electrical loads are appearing fastest. For background on how a superconducting cable is built and cooled, see our cable anatomy explainer.