VEIR closes $110M to take superconducting power into AI data centers

VEIR has closed a $110 million Series C to bring its superconducting power-delivery systems into AI data centers. The Woburn, Massachusetts, company builds cables and supporting equipment that route electricity from a facility’s power infrastructure toward dense computing loads while occupying less space than conventional copper. Matter Venture Partners and Tyche Partners co-led the round.

Superconductivity removes nearly all electrical resistance, but only while the cable remains extremely cold. VEIR packages the conductor with liquid-nitrogen cooling, termination units and controls that monitor temperature, pressure and flow. The result is an integrated power system rather than a standalone cable that an operator can simply install and forget.

For data-center operators, this is a space and construction pitch as much as an efficiency pitch. VEIR says its low-voltage system can carry 3 to 10 megawatts through a 4-inch-diameter cable in either alternating- or direct-current configurations. The company says that can reduce the cable count, weight and routing space required as computing racks consume more power.

VEIR said a simulated data-center demonstration delivered 3 megawatts through one low-voltage cable in November 2025. TNW reports that the company is now working with customers and partners on reference designs and its first commercial deployments, but it has not identified the customers. The round therefore arrives after a substantial technical test but before a named operating installation.

Those installations require VEIR to deliver the electrical and cryogenic equipment as one system, not merely manufacture superconducting cable. TNW reported that the new capital will expand manufacturing capacity and support additional products as the company begins its initial projects.

The Series C follows a $75 million Series B from January 2025 and brings VEIR’s total capital raised to $225 million, according to the company. The earlier round preceded the 3-megawatt demonstration; the new financing follows it as VEIR shifts from testing toward customer installations. No valuation was disclosed.