Everyone knows that electric vehicles are supposed to be better for the planet than gas cars. That’s the driving reason behind a global effort to transition toward batteries.
But what about the harms caused by mining for battery minerals? And coal-fired power plants for the electricity to charge the cars? And battery waste? Is it really true that EVs are better?
The answer is yes. But Americans are growing less convinced.
The net benefits of EVs have been frequently fact-checked, including by NPR. "No technology is perfect, but the electric vehicles are going to offer a significant benefit as compared to the internal combustion engine vehicles," Jessika Trancik, a professor at the Massachusetts Institute of Technology, told NPR this spring.
It’s important to ask these questions about EVs’ hidden costs, Trancik says. But they have been answered “exhaustively” — her word — and a widerange of organizations have confirmed that EVs still beat gas.
I was always under the impression that the source of the electricity to charge electric vehicles matters greatly. Some areas use coal burning to generate power while others use hydroelectric.
Definitely better to charge an EV with clean energy. But it’s probably better to charge an EV with dirty electricity than it is to keep using a combustion vehicle.
IIRC a gas vehicle is something like 20% thermally efficient, whereas a coal/oil power plant can be up to 60%. So even if my EV is charging off oil or coal, I’m getting 3x the energy per unit of emissions compared to a gas vehicle (though who knows how that translates to miles of range).