There’s a major catch to the world’s need for solar panels, a new analysis suggests. The booming solar panel market – which is critical for a clean energy future – could demand close to half the world’s aluminum by 2050. Thankfully, there are ways we can mitigate this.
Unlike more precious metals, such as the lithium and cobalt used in rechargeable batteries, the scarcity of aluminum is not the issue; in fact, it is the most abundant metal on Earth. But the production of pure aluminum which is used in solar panel frames comes with a huge energy cost that could translate to bulk emissions.