Low-Carbon Aluminum Data Center Cables Advance Through Rio Tinto and Prysmian Trial

Prysmian low carbon aluminum

Low-carbon aluminum data center cables are moving from concept toward industrial validation as Rio Tinto and Prysmian complete a trial using cleaner aluminum feedstock. The partnership links primary aluminum production, cable manufacturing, and fast-growing electricity demand from digital infrastructure.

Rio Tinto produced aluminum rod for the trial using a blend of hydro-powered aluminum from its Alma smelter in Quebec and aluminum made through Elysis technology. Prysmian then used the material pathway to test low-carbon aluminum cable production for data center applications.

The trial forms part of a five-year supply agreement signed in 2023 between Rio Tinto and Prysmian. That deal focuses on low-carbon aluminum made with renewable hydropower from Rio Tinto’s Canadian operations.

Data Center Growth Raises Demand for Cleaner Conductors

Low-carbon aluminum data center cables matter because power infrastructure is becoming a larger part of the data center supply chain. Data centers require large volumes of cable, busbar, grid equipment, and electrical distribution systems as operators expand capacity for cloud computing and artificial intelligence.

Aluminum offers a strategic balance between conductivity, weight, cost, and availability. For cable manufacturers, lower-carbon aluminum can help reduce the embedded emissions of electrical infrastructure without changing the core role of aluminum as a conductor material.

Prysmian’s involvement is important because cable producers sit close to the final customer. If data center owners increasingly ask for lower-carbon materials, cable manufacturers will need stable access to verified low-carbon aluminum supply.

Elysis Technology Remains Strategic but Not Yet Scaled

Elysis aluminum gives the trial a deeper industrial meaning. The Rio Tinto and Alcoa joint venture is developing an emissions-neutral smelting process that could reduce the carbon footprint of primary aluminum production.

However, Elysis aluminum remains in development and is not yet available in large production quantities. This limits near-term commercial impact but supports longer-term qualification work with downstream users such as Prysmian.

Rio Tinto’s hydro-powered Canadian aluminum provides the scalable base for the current supply relationship. Elysis material adds a future-facing technology layer that could become more important if industrial buyers push harder for lower-emission metals.

The Metalnomist Commentary

Low-carbon aluminum data center cables show how digital infrastructure is reshaping metals demand beyond chips and servers. The next competitive advantage may come from verified low-carbon supply chains for the electrical backbone behind data centers.