New data, same story. Less mining with a renewable transition.
Hannah Ritchie in Sustainability by the Numbers:
Back in January, I published a post looking at the amount of minerals that were required for the low-carbon energy transition. This came from projections in the International Energy Agency (IEA)’s The Role of Critical Minerals in Clean Energy Transitions.
It projected that the world would need to produce between 27 million tonnes in its Sustainable Development Scenario, and 43 million tonnes in its Net-Zero scenario by 2040. Those scenarios did not include steel. But including them doesn’t change things significantly: we’re talking about tens to hundreds of millions of tonnes.
Sounds big, until you compare it to the 15 billion tonnes of fossil fuels that we dig out of the earth every year.
But we need to make another comparison – not only comparing the total amount of material that’s used, but the amount of ore that needs to be mined, or rock that needs to be moved. Some of these minerals are in rocks at very low concentrations – that means that to get 43 million tonnes, we’d need to extract a lot more than that.
In this post, I’ll take a look at several studies that do this adjustment.
A few key conclusions emerge:
- The total quantities of rock moved for low-carbon technologies are much higher than the final amount we use. Billions, rather than tens or hundreds of millions of tonnes.
- These quantities are still lower than current mining requirements for fossil fuels. In other words, the energy transition will reduce total material requirements.
- The story for electricity and transport is different: material requirements for electricity will go down, but without improved recycling and more efficient material use, they’ll go up for vehicles












