POLITIFACT
istration wants the United States to eventually reach net-zero emissions no later than 2050 by transitioning to renewable energy sources and encouraging motorists to adopt electric cars. But Epstein says it’s a goal far out of reach.
A video of Epstein’s interview in a Jan. 31 Fox Business segment was flagged as part of Facebook’s efforts to combat false news and misinformation on its News Feed.
Mining experts say Epstein’s remarks are mostly accurate — with some caveats.
Epstein didn’t mention the year when the U.S. hopes to reach net-zero emissions or list any of the minerals mined for renewable energy technology.
Net-zero refers to the point where greenhouse gases released are in balance with the amount removed from the atmosphere. According to the United Nations, global greenhouse gas emissions would need to reach net-zero by 2050 to prevent temperatures from rising above 2.7 degrees Fahrenheit from pre-Industrial Revolution levels.
Kray Luxbacher, head of the University of Arizona’s mining and geological engineering department, said doubling more than 10 types of mining wouldn’t be implausible for the mineral requirements needed to reach net-zero by 2040 or 2050.
Luxbacher cited a report from the International Energy Agency featuring a list of nine minerals, their use in clean energy technology and their overall importance to that technology. Listed minerals include copper, nickel, lithium, zinc and aluminum.
“For some minerals, far more than doubling of production will be required (to reach net-zero) … even using more conservative sustainable development scenarios,” she said.
Scott Dunbar, a professor and department head of the University of British Columbia’s Norman B. Keevil Institute of Mining and Engineering, said Epstein’s remarks are an underestimate.
In the case of copper, global production would need to be increased by as much as five times from where it is now by 2050.
Dunbar said that’s just for wiring alone in electrical components, as copper is highly conductive, allowing electricity to flow through easily.
Global demand for these materials is rising outside of the transition to renewable energy because of economic, population and urbanization growth, Dunbar said.
Around 21 million tons of copper are mined annually. By 2050, this would need to rise to 60 million tons each year to meet the demands caused by economic, population and urbanization growth alone, Dunbar said. If 70 percent of the world’s electricity comes from renewable sources in 2050, 100 million tons of copper will be required.
“It’s a staggering amount that some people say is going to be impossible,” Dunbar said. “It takes 10 to 15 years to get a copper mine into production, so there’s going to have to be big changes in the way we do things to satisfy that demand.”
Around 2 million to 3 million tons of nickel are mined annually, providing a vital component in electric car batteries. Reaching the 2050 netzero goal would require around 5 million tons to be mined, Dunbar said.
To add 2 billion electric cars worldwide by 2050 would require more than 12 million tons of nickel, Dunbar said.
Asked to substantiate his claim, Epstein cited a separate report from the International Energy Agency, which said the “(clean) energy transition requires substantial quantities of critical minerals” that would need to grow almost sevenfold between 2020 and 2030 to meet the 2050 net-zero goal.
Dunbar said current mining deposits don’t contain enough minerals to meet the demand to reach net-zero emissions by 2050. He said it’s possible to get the minerals by mining deeper in the Earth than is done now, but that would expend a lot of energy and go against the desire to reduce greenhouse gas emissions.
New technologies could emerge before 2050 to address the issue, but it could take years before it’s a reality.
“It’s a problem occupying a lot of people in the mining industry right now: How are we going to satisfy this demand?” Dunbar said. “Nobody knows. It keeps our minds busy.”