Electric Vehicles Vs. Vehicle Miles Traveled — A False Debate

People who don’t like infill development cite electric vehicles as an excuse to continue to sprawl. People who don’t like cars like to point out the environmental limitations of electric vehicles.

And so we have a simmering tension, recently manifested in Alissa Walker’s otherwise engaging Curbed piece “When Electric Isn’t Good Enough” on the need to reduce vehicle miles traveled and reliance on single-occupancy vehicles — even if they’re electrically powered.

Reducing driving and building more walkable, bikeable and transit-friendly neighborhoods are obviously imperatives. Environmentally, we need the reduced emissions and more compact buildings that use less energy and water. Health-wise we need the exercise and social interaction. And economically, we need the savings on housing, transportation and utility bills. Walker’s piece helps makes that case.

But electric vehicles are still a crucial technology. Driving will continue regardless of development patterns, and we must decarbonize it. We should think of it as a “loading order” (to borrow an energy phrase for prioritizing efficiency over new electricity generation): first we try to reduce driving miles, then we decarbonize all remaining driving. Walker’s article is helpful in emphasizing the need for action on the first priority.

But missing from the article is mention of the crucial co-benefits of vehicle electrification. The battery revolution propelled by EV purchases means cheap energy storage to balance intermittent renewables like solar and wind power on our grid, which helps to decarbonize our electricity sector. Cheap batteries also mean we can now have battery-powered transit buses, not to mention e-bikes and e-scooters — some of the emission-reducing technologies hailed in Walker’s piece.

Overall, the article is a helpful reminder that we need to build better neighborhoods and encourage efficient modes of transportation. But we shouldn’t downplay the significance of electric vehicles as a crucial clean technology. In short, EVs are a necessary — but not sufficient — climate-fighting technology.

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