Why Vedanta's Green Copper Proposal Deserves A Second Look

In January, a hearing before a division bench of the Madras High Court, comprising Chief Justice Manindra Mohan Shrivastava and Justice G Arul Murugan, went largely unnoticed. Yet what Vedanta-Sterlite proposed in that courtroom could go a long way in making India Aatmanirbhar in something crucial to the Industry 4.0 race: copper. Yes, the same basic metal that runs through the electric wires in your home.

Copper was always valuable, but its importance has surged in recent years. Electric vehicles require four times more of it than conventional cars. Data centres devour it. Renewable energy infrastructure runs on it.

And here is what stings: India was self-sufficient in copper before the 2018 Sterlite protests. That year, we produced 830,000 tonnes. By FY2019, after the plant's closure, production had crashed to 450,000 tonnes. We became a net importer overnight and have remained one ever since.

Of all the critical minerals where India seeks to reduce dependence on China, copper is the lowest-hanging fruit. We have some of the ore. We have the technology. And now, Vedanta claims to have a greener, better technology than before. The timing, too, is fortuitous: copper prices are at record highs, making investments in cleaner production methods economically viable.

So What Exactly Is the Proposal?

Vedanta is not asking to simply restart the old Sterlite plant. Instead, the company has proposed what it calls "green copper initiatives by changing the original process." The court's response was measured: file a fresh application before the competent authorities. It was neither approval nor rejection, but it did open procedural pathways that had remained firmly shut since 2018.

The differences from the pre-2018 operations are substantial. The old plant relied entirely on primary smelting from copper concentrate: 100 per cent virgin ore. The proposed facility, by contrast, would operate on a hybrid model: 70 per cent copper concentrate and 30 per cent recycled copper. That 30 per cent translates to approximately 120,000 tonnes annually, sourced from e-waste and scrap. This would mark the first circular economy integration at such a scale in India's copper sector. The technology would come from Germany and Sweden, with a zero liquid discharge system designed to treat and recycle all water within the plant.

The proposed safeguards, too, go further than anything that existed before. Real-time emission monitoring would feed into a public data dashboard, allowing anyone to check pollution levels at any time. Third-party environmental audits would be conducted quarterly during the initial phase. Most significantly, a Local Management Committee would give the community structured oversight with actual authority, not merely advisory status. Vedanta has also committed to sharing surplus treated water with nearby villages and dedicating 15 per cent of capital expenditure to environmental protection.

Why Thoothukudi Itself Needs This Plant

The irony of Thoothukudi's current trajectory is hard to miss. In August 2025, VinFast inaugurated its ₹16,000 crore electric vehicle factory in the district, with capacity for 150,000 vehicles annually. Each EV contains roughly 60 kilograms of copper; at full production, VinFast alone will consume 9,000 tonnes every year.

The copper demand does not end there. The region has attracted green hydrogen investments worth ₹50,000-80,000 crore. Electrolysers that produce green hydrogen are copper-intensive. So is the port infrastructure being upgraded at VO Chidambaranar, where a ₹7,200 crore transshipment hub is under development. In short, Thoothukudi is building copper-hungry industries while importing copper from abroad, a structural absurdity that a local green copper plant could resolve.

Nor is what Vedanta proposes without global precedent. Similar circular economy models for copper production have been implemented in the Democratic Republic of Congo, Chile, and Poland, countries that have balanced mining and smelting with environmental concerns through technology upgrades and community engagement. These examples should encourage Indian planners to give the proposal a fair hearing.

The Price Rally and the China Problem

The economics have shifted decisively in favour of domestic production. Copper prices surged 42 per cent in 2025, crossing $13,000 per tonne. A global refined copper deficit of approximately 330,000 tonnes is expected this year, and BloombergNEF warns this shortfall could balloon to 19 million tonnes by 2050 as mine output fails to keep pace with the energy transition.

India's position is precarious. The country's copper import bill hit $10.33 billion in 2024, over ₹86,000 crore at current exchange rates, and continues to climb. The rupee's slide from 85.6 to nearly 90 per dollar makes imports progressively more expensive.

Meanwhile, China controls close to 70 per cent of global copper refining and smelting capacity, and India imports over 40 per cent of its copper needs. This creates a strategic vulnerability that becomes acute during periods of India-China tension. Copper has joined semiconductors as a critical dependency, a chokepoint that adversaries could exploit. The case for domestic production has never been stronger.

What About the Protests and Memories of Pollution?

The tragedy of May 2018, in spite of allegations of foreign funding, cannot be forgotten. Thirteen people were killed when police opened fire during protests against the Sterlite plant. The Justice Aruna Jagadeesan Commission found the firing "unprovoked." Families continue to seek justice. Any conversation about Thoothukudi must begin by acknowledging this wound.

Yet seven years of economic hardship have shifted perspectives. S Thiagarajan of the Thoothukudi Makkal Vazhvurimmai Sangam observes that "now there is not much of an opposition as people understand the economic impact." S Murugan of the Lorry Owners Association describes how the transport sector collapsed after 2018 (a thousand lorries reduced to five hundred) and estimates that if Sterlite comes back, there would be employment opportunities for 1,500 people in cargo transport alone.

There will always be a tension between environment and industry. But this new proposal tilts the balance more in favour of the environment than anything before: recycled inputs, zero liquid discharge, community oversight, real-time monitoring. While we do not know yet what the Tamil Nadu government wishes to do about the proposal, especially with elections around the corner, the idea definitely deserves evaluation on a pilot basis. Not considering the proposal means perpetuating import dependence indefinitely.

The Timing Could Not Be Better

The need is undeniable: India's copper demand currently stands at 1.7 million tonnes and is projected to reach 3-3.3 million tonnes by 2030. Local opposition has moderated as economic realities have set in. Prices are at levels that make green investments viable. The imperative to be Aatmanirbhar has never been more pressing, with China dominating the global supply chain.

Vedanta's green copper proposal could thus not have come at a better time. The question for Tamil Nadu, and for India, is whether we will seize the moment or let it pass while the import bill keeps climbing.