Copper is everywhere. It's in your phone, your car, and the power lines outside your window. And the companies that dig it up are having a harder time getting it out of the ground.
Antofagasta Plc, one of the world's biggest copper miners, just slashed its production forecast for this year after severe storms battered its Los Pelambres mine in Chile. The news is a reminder that the metal powering the modern world depends on weather that is getting harder to predict.
The London-listed company now expects to produce 625,000 to 655,000 metric tons of copper in 2026, down from its earlier estimate of 650,000 to 700,000. The revision came after intense rain and snow hit the mine, which sits high in Chile's Coquimbo region.
The storms were bad enough that the Chilean government issued a catastrophe declaration for the area. The mine was shut down in an orderly way, and while key facilities avoided serious damage, snow is still lingering in some spots. The company is slowly bringing operations back online.
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CEO Ivan Arriagada did not sugarcoat what happened. He said the storms over the past month were the worst Los Pelambres has seen since it started operating. He described the weather as drought for long stretches, then rain and snow "concentrated in very few days."
Antofagasta is feeling that tailwind. The company's first-half cash profit rose 27% from a year earlier, helped by stronger prices. In plain terms, the company is making more money per ton even as it wrestles with the weather.
The catch: the same forces pushing copper prices up are making production harder. Extreme weather is becoming a bigger threat in Chile, the world's top copper-producing country. And forecasters expect El Niño to intensify for the rest of the year, which means more heavy rain risk in parts of Chile and Argentina.
For investors, this is a story about supply and uncertainty. When a major miner trims its forecast, it tightens the global supply picture even further. That can support higher copper prices, which is good news if you own mining stocks or funds that track commodities.
But it also highlights a risk that is easy to overlook: mining companies aren't just battling geology anymore. They are battling the weather.
Antofagasta is studying ways to bounce back faster after severe storms, including extra investment and safer restart procedures. Arriagada says the company will keep looking for ways to increase resilience.
That is the right instinct, but resilience takes time and money. In the meantime, the updated forecast accounts for the chance of more bad weather before winter ends in Chile. The company is planning adapting for the worst while hoping for the best.
For the rest of us, the takeaway is simpler. Copper is essential, supply is tight, and the weather is making things less predictable. If you own copper-related investments, expect some ups and downs as miners adapt to a climate that no longer follows the old rules.
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