10/15/2026
Copper does the quiet work in a data centre. Busbars, cabling, transformers, switchgear, cooling. BHP's ratio is 27 tonnes per megawatt, so a 1 GW campus needs about 27,000 tonnes.
Here is the tension. The ICSG expects a refined surplus of about 96,000 tonnes in 2026. That is about 3.6 GW of data centres. The IEA expects supply from existing and announced mines to fall about 25% short of what is needed in 2035. Near term surplus, long term gap. Both can be true.
Would you put more weight on the two-year view or the ten-year one?
https://micromathcapital.com/research/copper-ai-buildout-data-centres-grid-supply-gap/?utm_source=facebook&utm_medium=social&utm_campaign=micromath-weekly&utm_content=2026-09-24
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