Microsoft Tests High-Temperature Superconductors for Data Center Power Systems

Microsoft is exploring the use of high-temperature superconductors (HTS) to improve the efficiency and capacity of its data center power infrastructure, announced on its Azure blog. The company is testing how superconducting cables can reduce energy loss, increase power density, and minimize the physical footprint of electrical systems supporting AI and cloud workloads.

HTS cables transmit electricity with zero resistance, allowing more power to move through smaller and lighter lines without producing heat. Microsoft has been collaborating with partners including VEIR to develop and test 3MW superconducting cables that could deliver higher current directly to server racks. The company says this approach could support high-density workloads and reduce the need for large substations or additional feeders.

Superconducting systems also require less space and can be installed underground, reducing the impact on surrounding communities. By limiting voltage drops and energy loss, these cables can improve grid stability and simplify data center expansion. Microsoft noted that the technology could enable faster deployment of new facilities and support the growing power needs of AI-driven cloud services.