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21/02/2024
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We could need 6 times more of the minerals used for renewables and batteries. How can we avoid a huge increase in mining impacts?

We are seeing the biggest changes in our energy and transport systems since industrialisation. By 2026, global renewable energy generation is expected to match total fossil fuel and nuclear output. Building the wind and solar farms, batteries and electricity networks we need to run our system on renewables will use a huge array of mined minerals, known as “transition minerals”.

The numbers are staggering. The International Energy Agency estimates a sixfold increase in demand for these minerals by 2040 to meet climate targets of well below 2℃ of warming. We could need 21.5 million tonnes for electric vehicles and battery storage alone.

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Transitional minerals include metals such as lithium, cobalt, copper, graphite, magnesium and nickel. They also include rare earths like neodymium, praseodymium, dysprosium and terbium.

Currently, mining provides almost our entire supply. The scale of demand for these minerals could result in almost 400 new mines by 2035.To put this in perspective, Australia has around 350 operating mines. More than 50% of the world’s lithium and much of its copper, cobalt, nickel and rare earths come from our mines.

Australia is hosting the World Mining Congress this week. A key issue for the industry is how we can ensure the minerals needed for the energy transition are sourced responsibly.

How can we manage demand?

We can design energy and transport systems to minimise mineral demand. Strategies include:

reducing our dependence on cars and using smaller vehicles
improving energy efficiency
moving to a circular economy that makes reuse and recycling a priority.

All these changes can reduce the need for new mines.

Recycling, for example, could reduce demand for mined materials. For lithium-ion batteries for electric vehicles, estimated reductions are 25% for lithium, 35% for cobalt and nickel, and 55% for copper by 2040.

This recycled content will mainly come from waste batteries. However, large volumes of lithium-ion batteries won’t start reaching the end of their lives for at least a decade. Recycling will only have a significant impact from 2035.

Mining is unavoidable, so we must limit its impacts

If we are destined to continue mining for the minerals needed for the energy transition, how can this be done responsibly? And what exactly do we mean by responsible sourcing?

Responsible sourcing minimises the environmental, social and governance impacts and risks of mining. Key concerns include the use of child labour and forced labour, damage to the environment, impacts on Indigenous rights and cultural heritage, and corruption.

In 2011, the Australian government released guidance on sustainable mining. Historical and recent harmful impacts highlight the need for a fresh look at mining practices. In 2020, for example, Rio Tinto destroyed a 46,000-year-old Aboriginal heritage site in Juukan Gorge.

First Nations people worldwide are calling for free, prior and informed consent when mining and renewable energy developments are proposed for their land. This approach recognises the right to be consulted early in the process, informed of the impacts, and supported to take part in negotiation and making agreements. Most importantly, it includes the right to say no.

In many parts of Australia, Indigenous communities have been locked out of economic opportunities, despite mining generating enormous wealth on their Country.

What does responsible sourcing involve?

How do we do things more responsibly? We need to ensure activities comply with a range of sustainability criteria. An agreed standard will mean we have information that enables us to compare the good and bad apples.

The problem is there isn’t a common approach to measuring, managing and reporting environmental, social and governance performance. Our recent research analysed the plethora of voluntary standards and certifications available to battery materials producers. No common global or Australian standard has been adopted.

Smaller mining companies also struggle with the administrative complexities of sustainability reporting and management criteria. An agreed common language for reporting and management is needed. Only then can traceability solutions, such as the Global Battery Alliance’s blockchain-enabled “battery passport”, produce trustworthy and comparable results.

 

Source: The Conversation

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