Copper's Bottleneck Isn't Mining

Two weeks ago, at the world's premier copper conference in Santiago, Chile, something broke protocol.

CESCO Week draws the biggest names in copper every year. Miners, traders, smelters, bankers. They argue about prices. They argue about China. They argue about tariffs. It's what they do.

This year, nobody argued about any of that.

The single most discussed topic at CESCO Week was sulfuric acid. Specifically, the fact that it's vanishing from the global market.

European smelters reported spot acid prices around $400 per tonne. In the DRC's Kolwezi corridor, one of the most important copper-producing regions on Earth, some transactions hit $700 per tonne. The long-run forecast price is $150.

If you don't understand why sulfuric acid matters to copper, you're missing one of the most important supply crises unfolding in the global economy right now.

One in Five Pounds of Copper Is Now At Risk

Roughly 20% of the world's copper never comes from a traditional mine, the way you'd picture it. It's extracted through a chemical process called solvent extraction and electrowinning, or SX-EW, which uses sulfuric acid to leach copper from oxide ores.

Chile, Indonesia, and the Democratic Republic of Congo all depend heavily on this process. Three of the most important copper-producing regions on the planet are all tethered to the same chemical input.

Sulfuric acid is made from sulfur. Nearly half of the world's seaborne sulfur comes from the Persian Gulf.

The Strait of Hormuz, the narrow waterway through which all of that sulfur must pass, has been effectively closed since the war in Iran.

The sulfur isn't moving, the acid isn't being made, and the copper isn't being produced.

China was the world's largest exporter of sulfuric acid in 2025, shipping 4.65 million tonnes. Chile imported 37% of its foreign supply from China. Indonesia imported 62%.

On May 1st, just three days ago, China banned sulfuric acid exports through the end of the year. Beijing needs its own sulfur for domestic agriculture.

When food security and mining compete for the same chemical input, food wins.

China shipped zero sulfuric acid to Chile in March, the first time that's happened since July 2023.

Chilean buyers had covered most of their acid needs for the first half of the year, but left the second half largely uncovered. They now have to go back into a market where supply has effectively vanished.

Goldman Sachs estimates that if DRC disruptions extend past June, up to 125,000 tonnes of copper output could be at risk from that corridor alone, enough to cut the bank's modeled surplus for this year in half.

S&P Global warns there is no quick fix.

New sulfuric acid capacity and alternative shipping routes take years, not months, to develop. This is a structural break in the supply chain that feeds one-fifth of global copper production.

330 Hoover Dams of New Power Every Year

The conventional wisdom says geopolitical chaos is bad for commodity demand. War slows economies, slower economies use less copper, prices fall.

That logic made sense in 2005, but it doesn't apply now.

Copper's demand profile has fundamentally changed. In 2020, electrical infrastructure accounted for 24% of copper demand. By 2025, that share had risen to 30%. By 2030, it'll be higher still.

This is structural, multi-year, policy-backed capital spending on grids, data centers, EVs, renewable energy, and defense systems. The kind of spending that doesn't get canceled because a commodity price ticked up 20%.

According to S&P Global's landmark study "Copper in the Age of AI," primary copper supply is expected to peak in 2030. After that, a 10-million-tonne supply-demand gap opens up by 2040.

To meet projected power demand by 2040, the world needs to add the equivalent of 330 Hoover Dams, 30 Three Gorges Dam projects, or 650 one-gigawatt nuclear reactors. Every year for fifteen straight years.

Solar PV systems use about 2.2 tonnes of copper per megawatt of installed capacity.

Wind turbines need copper in the nacelle, cables, switchgears, and transformers. Passenger EVs use almost three times as much copper as internal combustion engine vehicles. And $7.5 trillion of investment in transmission and distribution infrastructure will be needed by 2040.

Energy transition, AI, and defense are projected to grow copper demand at 4% to 7% annually through 2040, far outpacing the 1.6% growth rate for traditional uses like construction.

These new demand drivers are expected to grow from 36% of total copper demand in 2025 to 45% by 2040.

As these structural trends drive copper consumption, demand becomes increasingly price inelastic.

Companies building data centers and governments electrifying their grids can't stop buying copper because the price went up 30%. The projects are already committed, the capital is already deployed, and the blueprints are already drawn.

The Iran war has actually validated this thesis.

A recent analysis from the Centre for Research on Energy and Clean Air showed that during March, the first full month after the war began, solar generation rose 15% and wind rose 8%, more than covering the shortfall from fossil-fuel declines.

The world just got a violent, expensive reminder of why it needs to accelerate the energy transition. Every watt of that transition runs on copper.

The 42% Winner We're Buying Back Cheaper

Copper has already diverged from iron ore prices over the last few years. It's diverged from Chinese equities. The market is slowly recognizing that copper is no longer just "Dr. Copper," the old cyclical indicator that rises and falls with global construction activity.

The market hasn't priced in the full divergence yet.

Copper miners as a group could see another 12 to 15% of near-term downside before reaching their horizontal support.

But at that point, the basket would be down roughly two-thirds from its bull-market relative-strength high versus the S&P 500, registered 15 years ago. 

If the market regime continues shifting toward real assets, and I believe it will, copper miners could retrace about half of that relative-strength gap versus their 2011 peak over the next two to three years.

If that happens, copper mining equities could double or more from those levels.

Inside the basket, one name has my attention right now. And I've held this asset before.

Last October, I made a copper recommendation to Premium subscribers.

A development-stage company working on a strategic critical minerals project in North America. Five months later, in February of this year, that company got acquired by a larger producer.

In late March, I sent a sell alert, and we closed the position at a 42% gain in five months, took the cash, and let the deal close without us.

And now, a few months later, the acquirer is the producer I'm bringing back into the portfolio this week.

Since the deal closed in mid-April, the acquirer's stock has dropped 17%. The market is punishing it for an unrelated execution delay on a separate project.

The underlying asset that just delivered our 42% gain is now wrapped inside a stock trading at a meaningful discount to where it was a month ago. Same project, different vehicle, better entry, more shares per dollar of capital deployed.

The discount matters more than the market thinks.

This producer is simultaneously ramping up two greenfield copper mines coming online in 2026, with copper reserves measured in the billions of pounds and mine lives running two decades.

And here’s the kicker. Both deposits are sulfide-based. Their copper is recovered through flotation and concentrate, a process that doesn't require a single drop of sulfuric acid.

This producer's new copper output is structurally insulated from the exact supply-chain crisis crippling its competitors. While SX-EW producers scramble for acid that doesn't exist, this producer's mines don't need any.

That's a competitive advantage the market hasn't priced in. And right now, the entire company is on sale.

We were early in October when nobody saw the underlying asset. We were early in March when we took the cash before the deal closed.

We're early again now, while the market sells the buyer for reasons that have nothing to do with the value of what we just sold them.

Audit Your Copper Exposure

I've been writing about hard assets for years. Gold, silver, uranium, critical minerals.

The original copper supercycle thesis went out last October. December connected Nvidia's compute buildout directly to copper demand. February framed copper as the S&P 500's biggest blind spot.

Seven months in, the thesis hasn't broken. The sulfuric acid crisis just accelerated it.

The supply crisis isn't theoretical.

It's happening right now in the sulfuric acid markets, in the closed shipping lanes of the Strait of Hormuz, and in the export bans coming out of Beijing.

The demand story isn't speculative.

It's written into $7.5 trillion of committed infrastructure spending, into the blueprints of every data center being built for AI, into every EV rolling off a production line, into every solar panel being installed on every rooftop from Shanghai to Sacramento.

Audit your portfolio for copper exposure. If you don't have any, you're betting against the most important industrial metal of the next two decades at exactly the moment its supply chain is breaking.

The world runs on copper. And there isn't enough of it.

That's an opportunity.

Wednesday's Premium Alert

This coming Wednesday, I'm releasing the full Premium alert: name, ticker, entry price, position sizing, the full thesis and catalysts I'm watching over the next twelve months, and the round-trip math showing exactly why this second bite at the apple is bigger than the first.

Premium subscribers, watch your inbox on Wednesday morning. The alert lands before the open.

Free readers, this is your window.

Once the alert goes out on Wednesday, the trade is live, and the discount is on the clock. The acid crisis isn't waiting. Neither is the market.

Double D

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