The dataset is based on 678 chargers at 181 stations in the Bay Area:
A total of 181 open public DCFC EV charging stations and 678 EVSEs with CCS connectors were identified in the 9 counties of the Greater Bay Area and visited between February 12, 2022 and March 7, 2022.
The results were disappointing. According to the study, more than a fourth of all chargers were found to be nonfunctional when tested. The chargers tested in the study were primarily operated by EVgo and Electrify America.