Copper cannot be mined quickly enough to keep up with current U.S. policy guidelines to transition the country’s electricity and vehicle infrastructure to renewable energy, according to a University of Michigan study.
Copper cannot be mined quickly enough to keep up with current U.S. policy guidelines to transition the country’s electricity and vehicle infrastructure to renewable energy, according to a University of Michigan study.
The Inflation Reduction Act, signed into law in 2022, calls for 100% of cars manufactured to be electric vehicles by 2035. But an electric vehicle requires three to five times as much copper as an internal combustion engine vehicle—not to mention the copper required for upgrades to the electric grid.
“A normal Honda Accord needs about 40 pounds of copper. The same battery electric Honda Accord needs almost 200 pounds of copper. Onshore wind turbines require about 10 tons of copper, and in offshore wind turbines, that amount can more than double,” said Adam Simon, U-M professor of earth and environmental studies. “We show in the paper that the amount of copper needed is essentially impossible for mining companies to produce.”
The study examined 120 years of global data from copper mining companies, and calculated how much copper the U.S. electricity infrastructure and fleet of cars would need to upgrade to renewable energy. It found that renewable energy’s copper needs would outstrip what copper mines can produce at the current rate. The study, led by Simon and Cornell University researcher Lawrence Cathles, was published by the International Energy Forum and discussed in a webinar, “Copper mining and vehicle electrification.”
Read more at University of Michigan
Photo Credit: Joyce Cory, CC BY 2.0, via Wikimedia Commons
