Copper prices jump on data center demand

Copper prices moved to record territory this week as traders linked a supply squeeze with rising demand from AI data-center construction and grid equipment. Shanghai Futures Exchange copper contracts for the week of May 11-17 closed at 108,500 yuan a ton, up 4,040 yuan from the prior week, according to exchange data. LME cash copper was listed at $13,553.50 a ton for May 15, according to market data published by Westmetall. The move has put a basic industrial metal at the center of a broader buildout in power, cooling and transmission equipment used to support large data centers. ### Why is copper being pulled into the AI buildout? Copper is embedded in transformers, switchgear, busbars, cable, cooling systems and backup power equipment that sit behind new server capacity. Vertiv, a supplier of power and cooling systems for data centers, describes itself as a provider of critical digital infrastructure and said on its investor relations site that it will hold a 2026 investor conference on May 19-20. Vertiv's public materials show how investors have come to use the company as a proxy for AI-related infrastructure spending rather than for chips alone. The company's investor site lists fiscal 2025 revenue of $10.2 billion and identifies data-center power and cooling as its core business. ### What do the market numbers show right now? The Shanghai Futures Exchange posted a weekly close of 108,500 yuan a ton for its nearby copper contract in the week of May 11-17, versus an opening price of 104,460 yuan. (investors.vertiv.com) CME Group's copper futures settlements page also showed active May 15 trading data for U.S. copper contracts, reflecting heavy turnover as prices tested recent highs. LME copper remains the global benchmark for physical contracts, and the exchange says its official price is used as indexation in primary and secondary copper contracts and in hedging transactions. Westmetall's May 15 market data listed LME cash copper at $13,553.50 a ton and the three-month price at $13,600.00. ### Are inventories in China actually low? China inventory data show a fast drawdown from this year's peak, though not to historic lows. (shfe.cn) CEIC, citing Shanghai Futures Exchange data through May 13, said warehouse copper stocks had reached 326,327 tons on March 12 and stood at 56,035 tons on a median basis over the longer series. (lme.com) SHFE's own weekly data page confirms that traders are watching the exchange's inventory and price reports closely in mid-May. That matters because China is the largest copper consumer, and lower visible stocks can tighten prompt supply for fabricators and merchants. The inference that inventories are "low" is relative to the March spike rather than to the all-time low in the series. (ceicdata.com) ### Why are investors talking about Vertiv? Vertiv has become one of the clearest listed ways to express a view on AI-related capital spending in power and thermal systems. The company's investor site says it will host investors in Greenville, South Carolina, on May 19-20, a date that gives the market a near-term checkpoint on order trends and customer demand. (shfe.cn) Third-party summaries of Vertiv's recent results have pointed to a backlog near $15 billion and a large increase in orders, but those figures were not directly available in the official materials surfaced here. What is directly verifiable is that Vertiv positions itself as a supplier to data-center power and cooling markets and remains a focal point for investors tracking AI infrastructure spending. (investors.vertiv.com) ### What does Lake Tahoe have to do with this? Lake Tahoe's power dispute has become a local example of how data-center electricity demand is colliding with existing grids. AOL, citing reporting on May 16, said Liberty Utilities will need to replace a major electricity supplier before Nevada utility NV Energy ends an arrangement in May 2027, and residents have blamed the spread of data centers for tightening regional power availability. (investors.vertiv.com) The Reno Gazette Journal reported on May 15 that about 49,000 Lake Tahoe residents face uncertainty over future electricity supply as data centers come under scrutiny in the region. That does not make data centers the sole cause, but it places grid capacity, transmission access and local power procurement in the same conversation as the wider AI buildout. (aol.com) ### What comes next for this story? May 19 and May 20 are the next scheduled dates for Vertiv's investor conference in Greenville, where the company is expected to discuss strategy and market positioning. The International Copper Study Group says its next meetings will take place in Lisbon in October 2026, providing the next formal industry checkpoint on supply, demand and stocks. (investors.vertiv.com) (rgj.com)