are definitely improvements that can be made said nelson who charges at home most of the timebruce westlake president of the east michigan electric auto association suggested that such anxiety tends to ease as people gain more experience with evs he said he is now comfortable running his two teslas as low as 5 of battery capacity to go farther between charges on tripsresearch by jd power shows that most people think charging stations are needed at locations where gas stations are now but in fact according to the energy department most ev owners charge at home more than 80 of the timethat means superfast chargers which can cost close to 100000 should be built mainly along highways where people are travelling long distances and need to charge quickly experts say they also may be needed in urban areas where people live in apartments with no access to a home chargerits far from clear that the automakers can depend on proliferation of fast chargers across the country to build customer confidence and propel ev sales in the years ahead the high cost and heavy load on utility grids likely will limit the number of fast chargers to areas where theyre needed for quick fillups said jessika trancik an associate professor at the massachusetts institute of technology who studies ev chargingas were approaching this transition she said its important to be more strategic than just putting them everywherecharging companies have time to figure out where to build fast chargers because it would take more than 17 years to convert the entire us fleet of 279 million passenger vehicles from petroleum to electricity even if every motorist were willing to make the switch said pasquale romano ceo of chargepoint a charging station company but the chargers cant come fast enough for automakers who want more people to buy their evs to spread development costs over more vehiclesromano says fast chargers will be needed about every 75 miles 120 kilometres on roads that connect metro areas and that the united states should get there in about two years as more evs are sold he said more stations will be builtyou dont want to put all the infrastructure in for 20 years starting with vehicle zero romano said this is about the natural organic growth