As sales of electric vehicles continue to grow, inoperable and poorly maintained public charging stations increasingly frustrate drivers, according to an ongoing study by J.D. Power, the consumer data analysis firm known for its automobile quality and dependability studies. Charge point unreliability has increased 50% from 2021 to January 2023, according to data provided by Brent Gruber, executive director of J.D Power’s electric vehicle practice, from 14% to 21%.