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The Copper Squeeze: Why Aluminium Is Emerging as the Alternative
SYNOPSIS
Copper is at the centre of the global electrification story, but rising demand and constrained supply are creating a widening gap. As industries face higher costs, aluminium is emerging as a practical substitute in applications ranging from power transmission to automobiles. The shift highlights how resource constraints can reshape industrial choices.
What happens when the metal powering our future becomes too expensive to use? Copper prices have skyrocketed leaving top manufacturers in a difficult position: ditch the red metal, or pass on the cost to consumers.
Copper is the backbone of the modern economy. From power grids and electric vehicles to electronics and data centres, copper is being used everywhere. But with global demand expected to increase by more than 40% by 2040, and theInternational Energy Agency estimating a potential 25% supply deficit by 2035.Industries are facing a big question: can aluminium step in where copper falls short?
The significance of copper arises from its high electrical conductivity, durability, and resistance to corrosion. Demand for electrical networks, renewable energy, electric vehicles, and data centres is increasing as the world moves towards electrification.The problem, however, is not that copper is suddenly running short, but rather that demand is rising more quickly than new supply can be produced. Closing this gap is becoming more and more challenging due to declining ore grades, aging mines, and the lengthy timescales and substantial investment needed to establish new mines.
This growing supply shortage has made the industries turn to Aluminium, as it stands out as one of the most practical alternatives. Aluminium is lighter in weight and substantially less expensive than copper, making it an attractive substitute. And, it already plays a well-established function in applications such as overhead electricity lines.
Aluminium was trading at roughly one quarter the price of copper as of September 10, 2026, at ₹3,19,444.96 per tonne, while copper was trading at ₹13,75,055.16 per tonne, according to London Metal Exchange pricing. This significant price difference makes aluminium an attractive alternative to manufacturers exploring substitution in suitable applications.
Indian companies are moving towards aluminium and adapting to the potential shift. Polycab India and KEI Industries are manufacturing aluminium cables for power transmission, distribution and industrial use. Tata Motors and Mahindra & Mahindra are turning towards aluminium components in automobiles to reduce weight and improve efficiency, as electric vehicles become more widespread. These examples show that Indian companies are increasingly opting for aluminium whenever they can.
But can aluminium completely replace copper? The answer is no. Copper is still a great conductor of electricity and has its own advantages in areas where performance and durability are important. Aluminium requires more material to carry the same electrical load and therefore is not suitable for all applications.But substitution does not mean total replacement. Even a partial adoption of aluminium in the right applications can help relieve the pressure on copper. As the increase in prices push industries to look for an alternative, aluminium stands out as a practical, lightweight and cost-effective alternative.
The copper squeeze is therefore not merely a story about one commodity becoming expensive. Industries are being pushed to reconsider the resource they rely on. Aluminium may not replace copper completely, but it could change how much copper the world needs.
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