Electric vehicles are finally beginning to take off here in the U.S. There’s a barrage of that can easily get you from A to B in clean, emission-free style. But sadly, while the offering of electric vehicles is improving, the same that keeps them on the road.

According to , consumer satisfaction with the EV charging here in the U.S. is dropping as more people clamor for fewer plug-in points.

The study found that , thanks to expansion of Tesla’s supercharger network and the Electrify America chargers, users were increasingly annoyed by the service they got at charging points.

This was particularly prominent in places like California, where the growth in EV numbers is .

“Public charging continues to provide challenges to overall EV adoption and current EV owners alike,” said Brent Gruber, executive director of global automotive at J.D. Power.

“Not only is the availability of public charging still an obstacle, but EV owners continue to be faced with charging station equipment that is inoperable.

“Stations need to be added to areas where there are currently gaps in heavily traveled routes and in high-density areas for people who don’t have access to residential charging, but most importantly, designed with things for users to do while charging – regardless of the use case. Then, we need to make sure those stations are reliable.”

Of the chargers that EV drivers could access, the study found that most people were pretty happy with the offering in their area. However, at sites here in America. The J.D. Power study said:

“The industry needs to do a better job of maintaining existing charging stations. The study finds that one out of every five respondents ended up not charging their vehicle during their visit. Of those who didn’t charge, 72% indicated that it was due to the station malfunctioning or being out of service.”

Issues such as this appeared to plague level two chargers in the U.S., which will refill your electric car at a slower rate than a dedicated DC charger. At those ports, most such sites offered.

According to the survey, users of DC fast-chargers were often taking a long, planned out road trip. As such, they were likely to plot a route that stopped at such points to ensure an easier journey.

Gruber added: “Although fast charging is seemingly getting faster by the day, to expedite the charging process vehicles will need to accommodate the newest ultra-fast chargers.

“Currently, only a handful of vehicles can take advantage of the fastest charging speeds. And no matter how fast their vehicle charges, EV owners still indicate they need more options for things to do during each charging session to enhance convenience and fill the down time.”