The energy transition has a copper problem that goes way deeper than most people realize

Hi,

I've been going through a pretty exhaustive analysis on copper and the energy transition and I need to share some of what I found, because I think most people, even people who follow energy closely, are working with an incomplete picture.

First, the framing that usually gets it wrong: copper is not running out. There are about 980 million tons of identified reserves and roughly 5,600 Mt of total estimated resources. At current rates, that's centuries worth. Anyone saying "we're running out of copper" is missing the point entirely.

The actual problem is flow rate, i.e., how much copper can physically be extracted per year, at what energy cost, and in what timeframe.

Global demand right now sits at about 27.4 million tons per year. Depending on the scenario, that needs to reach somewhere between 33 and 50 Mt by 2035. To put the upper end in perspective: S&P Global's Net Zero scenario requires producing more copper in the next 25 years than humanity extracted across the entire 20th century. That's not a marginal increase. That's a civilizational-scale materials challenge.

And the physics of renewables make this worse than it sounds. A gas plant uses roughly 1 ton of copper per MW installed. An offshore wind farm uses 8–15 tons per MW. Solar at utility scale is 2.5–5.5 t/MW. The shift away from fossil fuels isn't just an energy transition, it's a materials transition of enormous proportions that barely gets mentioned in policy discussions.

EVs compound this further. A combustion car has about 23 kg of copper. A battery EV has 60–83 kg. An electric bus can have more than 300 kg. Projected EV-related copper demand is expected to grow 177% by 2030, to roughly 2.5 Mt/year: about equal to Peru's entire annual production, just for vehicles.

Now add grid expansion. The IEA estimates the world's electricity grid infrastructure needs to nearly double by 2050: from 70 million km to ~152 million km at a cost of around $21 trillion. A single 400/100 kV transformer can contain up to 50 tons of copper. Grid copper demand alone is projected to grow from 4.1 Mt in 2023 to 6.2 Mt in 2035.

The numbers are internally consistent across very different institutions, including IEA, S&P Global, Wood Mackenzie, BHP. They disagree on magnitude, but they all agree the gap is enormous.

The question isn't whether there's a problem. It's how we're going to deal with it.

My full analysis in Spanish at raw-science.org.