Naval Facilities Engineering Command - Naval Submarine Base - Building 564

Of its 10 ports, 10 are Level 1. Level 1 ports are standard 120-volt outlets, the slowest way to charge. That is about 3.3 times the Connecticut average of 3.1 ports per station. The registry lists one connector type: NEMA 5-20, 20A 120V wall outlet. The site is listed as a federal government location. It is flagged as workplace charging.

Groton has 35 charging stations in the DOE registry with 107 ports, the 11th-most of 165 cities and towns in Connecticut. Naval Facilities Engineering Command - Naval Submarine Base - Building 564 accounts for 9% of the charging ports in Groton. Statewide, Connecticut has 1,807 stations and 5,527 ports, the 18th-largest station count of the 51 states and DC. The biggest station in Connecticut, 18 Dock St in Stamford, has 46 ports.

Naval Facilities Engineering Command - Naval Submarine Base - Building 564 is listed as non-networked: its chargers are not run through a charging-network account. Connecticut has 338 non-networked stations, 19% of its total.

“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 Feb 1, 2019, one of 42 stations in Connecticut with a 2019 open date. The station's record was last updated at the source on Feb 2, 2026.