Rockville City Hall - Employee Parking Lot

Of its 9 ports, 9 are Level 2. Level 2 ports are 240-volt AC chargers, typically used where a car is parked for an hour or more. That is about 2.6 times the Maryland average of 3.4 ports per station. The registry lists one connector type: J1772, the standard Level 1/2 AC connector. The site is listed as a municipal government location. It is flagged as workplace charging.

Rockville has 92 charging stations in the DOE registry with 271 ports, the 3rd-most of 248 cities and towns in Maryland. Rockville City Hall - Employee Parking Lot accounts for 3% of the charging ports in Rockville. ChargePoint runs 41 stations in Rockville. Statewide, Maryland has 1,866 stations and 6,365 ports, the 16th-largest station count of the 51 states and DC. The biggest station in Maryland, Aberdeen Proving Grounds in Aberdeen, has 36 ports.

The largest US charging network by station count — mostly Level 2 at workplaces, retail and municipal sites. ChargePoint operates 48,998 stations in the registry across 52 states, with 5,017 DC fast and 83,427 Level 2 ports in total. 659 of those stations are in Maryland, 35% of the state's 1,866.

“Available” means the station is open and in service according to the DOE registry. Its access code is private, meaning use is restricted, for example to a fleet, employees or residents. It opened on Nov 8, 2017, one of 58 stations in Maryland with a 2017 open date. The station's record was last updated at the source on Oct 6, 2026.