Microsoft turns to superconductors for distributing power to its AI data centers — zero-resistance cables could reduce power losses and produce zero heat

Source: Tom’s Hardware

Microsoft exploring high‑temperature superconductors for data‑center power

Microsoft is investigating high‑temperature superconductors (HTS) to transmit the massive amounts of electricity required by its data centers. According to the Microsoft Azure blog, superconductors have zero resistance, meaning HTS cables would experience no voltage drops and would generate no heat as electricity flows through them.

Benefits of HTS cables

• Reduced size and weight – HTS cables can be lighter and occupy far less space than traditional copper or aluminum conductors.
• Compact installation – While conventional overhead lines often need about 70 m of clearance to prevent electrical field interference, HTS cables can be installed in a trench only 2 m wide.
• No heat generation – The lack of resistance eliminates the heat that normally dissipates in conventional wiring, improving overall energy efficiency.

Economic viability and future outlook

The enormous power demand of modern data centers is making HTS technology economically feasible. Deploying HTS cables could significantly shrink the footprint of substations and other conventional power infrastructure. This, in turn, would enable Microsoft to build additional data centers without increasing grid electricity consumption—a crucial advantage as the company continues research into small‑modular reactors (a technology still under development).

If high‑temperature superconductors become widely viable, they would represent another example of how the economics of AI are driving innovation across the entire technology stack.