A prominent Asian automotive company has commissioned Newcastle-based Advanced Electric Machines (AEM) to assess its aluminium-wound electric motor technology for potential inclusion in high-volume vehicle platforms. This collaboration marks a significant endorsement of alternative motor winding materials, as original equipment manufacturers (OEMs) seek to mitigate vulnerabilities in the copper supply chain. Approximately 50% of the world’s copper refining is concentrated in a single region, prompting automotive manufacturers to explore diverse technology pathways for supply chain resilience.
The UK Government’s Critical Minerals Strategy, published in November 2025, underscores these concerns, forecasting a rise in copper demand from 922,200 tonnes in 2027 to 3,619,000 tonnes by 2035. This strategy highlights the concentration of the copper supply chain as a strategic vulnerability and pledges up to £50 million to foster innovations that promote supply chain diversification.
AEM’s technology substitutes traditional copper windings with compressed aluminium conductors, leveraging aluminium’s global supply infrastructure and reduced geopolitical risk. This approach maintains power density while enhancing operational efficiency through electrodynamic performance, leading to lower energy consumption per kilometre. AEM CEO James Widmer stated, “OEMs are evaluating motor technologies not just on performance metrics, but on strategic supply chain resilience. Our aluminium winding architecture addresses critical sourcing vulnerabilities while delivering measurable efficiency improvements and enhanced end-of-life recyclability.”
This commercial engagement follows AEM’s recent tier 1 supplier agreement for its rare-earth-free SSRD motor technology, indicating growing industry momentum towards material diversification in electric drivetrain components.
AEM’s compressed aluminium winding technology offers several engineering advantages over conventional copper designs. The material availability advantage is significant, as aluminium refining capacity is geographically distributed, reducing single-source supply chain risks. Manufacturing flexibility is enhanced through lower material costs and established aluminium processing infrastructure, allowing for more diverse supplier qualification. Operational efficiency gains are realised through improved thermal performance, contributing to reduced energy consumption per kilometre.
End-of-life processing benefits include the clean separation of aluminium and steel components, enabling higher-value material recovery without contamination. The circular economy benefits are substantial: recycled aluminium requires 95% less processing energy than primary production, supporting automotive manufacturers’ scope 3 emissions reduction targets.
