A new study warns the US grid is too clogged to deliver the full climate payoff from switching to EVs. (Nature)
Even if half of US generation came from renewables, today’s transmission limits would leave ~644M tons of CO₂ a year from vehicle operations—almost all because clean power can’t get to where cars are charging.
Yes, but: Researchers found that upgrading just 3–13% of high‑voltage lines in the right places could clear the bottlenecks, letting a 50% renewable grid power a fully electrified vehicle fleet with near‑zero operational emissions.