About ChargerMap
ChargerMap aims to be a reliable reference for where Maryland's public fast charging sites and utility-owned charging sites are, and what is at each one. Sites are checked against driver visits rather than taken from government or network data alone. Coverage is not yet complete, and corrections are welcome.
Each pin is a charging site, not an individual charger, and sites are reviewed by hand rather than grouped by software. The map is maintained by volunteers, all Maryland EV drivers who use the state's public chargers regularly.
The same charging site often appears in many places, including the federal Alternative Fuels Data Center (AFDC), PlugShare, Google Maps, Apple Maps, OpenStreetMap, and Open Charge Map. Each serves a different purpose and updates on its own schedule, so the listings often disagree:
- A pin placed at a mailing address or a nearby building instead of at the chargers
- One site listed as several separate entries, or two sites combined into one
- Different names, addresses, port counts, or networks for the same place
- Sites that have closed or changed networks but are still listed
Drivers are left unsure which listing to trust, and anyone working with more than one source has to sort out the same mismatches again.
ChargerMap keeps one record for each real charging site. When sources disagree, volunteers work out which listings describe the same place, then check the details against field visits and photos: where the chargers actually are, how many ports there are, who runs them, and whether the site is open.
Each site stays one consistent record over time. When something changes, such as ports removed, a network switch, or a closure, the record is updated and the change is listed on Recent Changes with its date.
A site marked Verified in person has been visited by an EV driver, who confirmed where the chargers are, placed the pin at the chargers, counted the ports, and photographed the site. Each site shows the date of its most recent visit.
Sites not yet visited are marked Not yet verified in person. Their location comes from the AFDC and may be less precise.
ChargerMap records where sites are and what is installed at each one. It does not report whether chargers are working at any given moment.
Pins mark where the chargers are, not a mailing address. Tap a pin to see a photo of the site, the network, port count, power level, and owner, plus links to the site's listings elsewhere, such as PlugShare.
ChargerMap is meant to serve as a field-checked reference for matching charging site records across sources. Each site will link to its listings elsewhere, such as the AFDC, PlugShare, Google Maps, Apple Maps, OpenStreetMap, and Open Charge Map, so the same place can be found quickly in each one. PlugShare and AFDC links already appear where available, and links to other sources are in progress.
If you find a site where ChargerMap and another source disagree, please send feedback. Those reports help keep the reference accurate.
The starting point is the AFDC station list from the U.S. Department of Energy. Volunteers check each site against field visits, photos, and other public sources, and correct locations, port counts, and network names when they differ from what drivers find on the ground. Other sources are compared and linked to, not copied.
- MD Fast Chargers: every public DC fast charging site in Maryland.
- MD Utility-Owned: every Level 2 and DC fast charging site owned by a Maryland utility.
- MD Charger Stats: site and port counts by network, county, utility, and power level.
- Recent Changes: dated updates to site records.
If a site is missing, in the wrong spot, or listed with the wrong details, please let us know.
ChargerMap.org is published by PlugInSites.org.