The narrower price spread between the cheapest and most expensive gasoline markets compared to the span in EV charging costs highlights the greater collective exposure of US gasoline consumers to global markets.
Certainly there are some key regional trends in the US fuel market, with much of the West Coast among the most expensive while the Gulf Coast has some of the cheapest, helped by proximity to refining capacity and energy production.
But while state-level differences exist, gasoline prices broadly move together because they are tied to the same underlying oil market.
When crude rallies, motorists from Arizona to Wisconsin generally feel the impact.
The gasoline market remains largely national and increasingly global.
Instead of a broad national pattern, electricity prices cluster around regional utility structures.
Hawaii stands out as the most expensive state for charging an EV, at roughly $3.45 per gallon equivalent, with California close behind.
Hawaii's isolated grid makes generation more expensive than on the mainland, while California's stretched infrastructure, wildfire mitigation measures and rate policy structures have resulted in above-average utility costs for years.
Several New England states, including Connecticut, Massachusetts, Maine and Rhode Island, also rank among the most expensive.
At the other extreme sit Louisiana, Idaho, Washington, Utah and several Plains states, where EV fueling costs are close to or even below $1.10 per gallon equivalent.
Those differences are enormous, and drastically change the appeal of EVs depending on where you live.
A driver recharging an EV in Hawaii faces fuel costs more than three times higher than a driver in Louisiana.
Few consumers realize that the cost of operating the same vehicle can vary so widely within the same country.
Yet EVs currently beat gasoline everywhere in terms of refueling costs. Even in Hawaii, where electricity costs are highest, the equivalent cost of driving an EV is substantially lower than buying regular gasoline.
California's drivers pay some of the highest prices for both electricity and gasoline.
Yet even there EV owners maintain a significant operating-cost advantage.