As California, New York, and other states move to phase out the sale of gasoline-powered cars, public officials routinely echo the Biden administration’s claim that electric vehicles are a “zero emissions” solution that can significantly mitigate the effects of climate change.
Car and energy experts, however, say there is no such thing as a zero-emissions vehicle: For now and the foreseeable future, the energy required to manufacture and power electric cars will leave a sizable carbon footprint. In some cases hybrids can be cleaner alternatives in states that depend on coal to generate electricity, and some suggest that it may be too rash to write off all internal combustion vehicles just yet.
“I have a friend who drives a Kia he’s had for about 15 years,” said Ashley Nunes, a research fellow at Harvard Law School. “He called me and said, ‘Hey, I’m thinking of buying a Tesla. What do you think?’”
“I said, ‘If you care about the environment, keep the Kia,’” Nunes said.
Nunes’ advice points to the subtle complexities and numerous variables that challenge the reassuringly simple yet overstated promise of electric vehicles. Few dispute that the complete transition to EVs powered by cleaner electricity from renewable energy sources will have a less dire environmental impact than today’s gas-powered automotive fleet. But that low-carbon landscape exists on a distant horizon that’s booby-trapped with obstacles and popular misconceptions.
In the meantime, the growing efforts by governments in this country and abroad to ban people from buying a transportation technology that has shaped modern society for the past century is prompting some electric car advocates to warn against using best-case scenarios to promote unrealistic expectations about the practicalities, costs, and payoffs of EVs.
Adding up the environmental costs and benefits of electric cars requires complex computer modeling to calculate an EV’s lifetime carbon footprint, which depends on a host of assumptions and inputs. The cradle-to-grave analysis must factor in industrial processing, refining, manufacturing, recycling, and electricity generation. The upshot: More greenhouse gases are emitted in the manufacture of EVs than by the drilling, refining, smelting, and assembly for gas-powered cars, which means it can take several years of driving an EV before there is any benefit to the climate.
R&I – FS
