Copper: Relationships

Every element and industry that Copper is linked to, and how. Each pair has its own card explaining the relationships between the two.

Sulphuric acid: Copper and sulphuric acid are tied both ways: smelting sulphide concentrates makes roughly 4 tonnes of acid per tonne of copper, while leach mines consume acid to dissolve oxide ore. Acid sales now prop up smelter margins when treatment charges are weak, and acid shortages raise costs at leach mines, notably in Chile. (researched)
Aluminium: Aluminium is the main substitute for copper in power cable, radiators, cooling tube and some electrical equipment, so the copper to aluminium price ratio, which rose from about 3.5 to about 4.1 times during 2025, shapes the incentive to switch; the two prices also share the industrial cycle. (researched)
Distribution grids, mini-grids and interconnectors: Distribution networks are a large copper outlet: copper goes into underground cables, substations, transformer windings and earthing, while aluminium takes most overhead lines. Grid investment, above all in China, was the largest single source of copper demand growth in 2023 and 2024, and programmes such as India's RDSS add to it. (researched)
Electrical equipment: Copper is the main conductor in cables, motor and transformer windings and switchgear busbars, and it carries the largest weight in India's power transformer price formula; contract price variation clauses pass copper price moves through to buyers. (researched)
Gold: Gold is a valuable by-product of porphyry copper mines and is recovered at copper smelters; at Grasberg, gold, silver and other credits cut the reported copper cash cost by about 70% in the first quarter of 2025. Prices are only moderately correlated because demand for the two differs. (researched)
Heat pumps, air conditioning and refrigeration: Air conditioners, heat pumps and fridges move heat through copper tubes and coils and run on copper-wound compressor motors, so copper was put at about 20 to 30% of the cost of making an air conditioner (Chinese estimate, 2021); when copper is dear, makers shift heat exchangers to aluminium. (researched)
Transformers and power electronics: Large power transformers are wound with copper, and since 2019 a surge in grid and generation demand has pushed US power transformer prices up about 77% and lead times past two years, with copper and electrical steel among the supply constraints. (researched)
Cobalt: About three quarters of cobalt is mined as a by-product of copper, mostly in DR Congo, so cobalt supply follows copper investment; Congo's 2025 export ban and quotas showed that cobalt can be held back while copper keeps flowing. (researched)
Construction and infrastructure: Buildings are the largest single use of copper, through wiring, plumbing and cooling tube, so construction activity moves copper demand, while plastics and aluminium cap how far copper prices can rise before builders switch. (researched)
Data centres and cloud: A data centre uses roughly 27 tonnes of copper per megawatt in its power, cooling and server systems, and more again in the grid that feeds it, so AI build-out has become a visible new source of copper demand, though still small next to grids, buildings and vehicles. (researched)
Electric and hybrid vehicles: A battery electric car was estimated to use about 83 kg of copper against about 23 kg in a petrol or diesel car (ICA estimate, 2017), in motor windings, battery connections, high-voltage wiring and charging, so each switch to a battery car adds about 60 kg of copper demand. (researched)
Electric motors and drives: Motors are one of copper's biggest uses, because their stator windings, and in some designs the rotor, are copper; tighter efficiency classes such as IE3 cut resistive losses largely by adding active material, so efficiency rules raise copper use per motor. (researched)
Fungicides: Copper salts such as copper oxychloride, copper hydroxide and Bordeaux mixture are among the oldest fungicides and remain a mainstay of organic and wet-climate farming. The tie matters far more to fungicides than to copper, and in Europe regulation, not the metal price, now sets how much copper farmers can use. (researched)
Molybdenum: Outside China and the United States, almost all molybdenum is recovered from copper mines, so molybdenum supply follows copper mine plans and copper miners earn part of their revenue from a steel-alloy metal. (researched)
Nickel: Copper and nickel share a price cycle and are mined together from magmatic sulphide ores such as Norilsk, but Indonesia's laterite boom has pulled nickel onto its own supply-driven path. (researched)
Onshore wind: An onshore wind farm uses about 2.5 to 7 tonnes of copper per MW, most of it in cables and earthing across the site rather than in the turbines, so the record 155.3 GW of onshore wind added in 2025 was a sizeable copper demand. (researched)
Silver: Most silver is a by-product of base-metal and gold mining, with copper mines such as KGHM's among the largest sources, and both metals depend on electrical and solar demand. (researched)
Solar photovoltaics: Solar plants use about 2.5 to 7 tonnes of copper per MW, mostly in cabling and earthing, and record silver prices in early 2026 pushed cell makers to start replacing silver contacts with copper, which could make copper a cell material as well. (researched)
Sulfur: Copper smelters make sulphuric acid as a by-product and copper leaching consumes it, so copper is both a rival to sulphur burning and one of its customers; in 2026 an acid shortage became a cost shock for leach mines. (researched)
Tellurium: More than 90% of tellurium has come from copper anode slimes, and about 70% of it now goes into cadmium telluride solar panels, so solar growth leans on a by-product of copper refining. (researched)
Vehicles, ships, rail, aircraft: A battery electric car used roughly three to four times the copper of a petrol car in 2017 estimates, in motor windings, battery foils, busbars and wiring, so electrification raises copper demand per vehicle, while high copper prices are pushing carmakers towards aluminium wiring. (researched)
Waste and recycling: Copper can be recycled repeatedly without losing quality, so scrap supplies about a third of world copper use; for recyclers copper is the most valuable metal in cables, motors and e-waste, and for India imported scrap fills the gap between domestic collection and its secondary rod plants. (researched)
Zinc: Copper and zinc are alloyed together as brass, often mined from the same polymetallic ores, and traded on the same exchanges, giving them the closest price link among copper's partners. (researched)
Selenium: More than 80% of selenium comes from the anode slimes left by electrolytic copper refining, so selenium supply is fixed by copper refinery output, not by selenium demand. (researched)
Telecommunications: Telecom networks were built on copper lines, but optical fibre now replaces copper in access and long-haul networks, so operators are retiring copper while still needing it for power feeds to radio sites and subsea cable repeaters. (researched)
AC transmission: AC transmission needs copper; their prices have moved together.
Generators and alternators: Generators and alternators needs copper; their prices have moved together.
Offshore wind: Offshore wind needs copper; their prices have moved together.
Underground, submarine and superconducting cables: Underground, submarine and superconducting cables needs copper; their prices have moved together.
AI and digital platforms: AI and digital platforms depends on copper.
Aerospace and defence: Aerospace and defence depends on copper.
Apparel and footwear: Apparel and footwear depends on copper.
Building heat recovery: Their prices have moved together.
Computers and electronics: Computers and electronics depends on copper.
Crude oil: Their prices have moved together.
E-commerce and digital marketplaces: E-commerce and digital marketplaces depends on copper.
Education and research: Education and research depends on copper.
Geothermal direct use and ground-source heat pumps: Their prices have moved together.
HVDC links: Their prices have moved together.
Healthcare services: Healthcare services depends on copper.
Heat exchangers and pinch integration: Their prices have moved together.
Hospitality and tourism: Hospitality and tourism depends on copper.
Iron ore: Their prices have moved together.
Lead: Their prices have moved together.
Machinery and equipment: Machinery and equipment depends on copper.
Media and entertainment: Media and entertainment depends on copper.
Medical devices: Medical devices depends on copper.
Metal products: Metal products depends on copper.
Organic pigments: Their prices have moved together.
Plastic and rubber products: Plastic and rubber products depends on copper.
Rail traction: Their prices have moved together.
Real estate: Real estate depends on copper.
Run-of-river and small hydro: Their prices have moved together.
Semiconductors: Semiconductors depends on copper.
Software and IT services: Software and IT services depends on copper.
Textiles and leather: Textiles and leather depends on copper.
Tin: Their prices have moved together.
Transport and logistics: Transport and logistics depends on copper.
Water and sanitation: Water and sanitation depends on copper.
Wholesale and retail trade: Wholesale and retail trade depends on copper.
Wool: Their prices have moved together.