Based on a report from the National Renewable Energy Laboratory (NREL), the DOE says that between the last quarter of 2019 and the first quarter of 2021, 9,894 workplace chargers were installed in the US.
The DOE defines workplace chargers as private charging stations for the use of employees only. The DOE reported that by the end of March 2021, about 95% of these were Level 2 chargers, 4% were Level 1 chargers, and less than 1% were DC fast chargers.
Chargers at federal workplaces contributed to this growth. According to the NREL report, 408 federal workplace chargers were added to the tally in 2021.
Source: DOE