The Tesla Supercharger in Hanover, Maryland is located on the third level of the parking garage at the Hotel at Arundel Preserve. It features eight charging stalls, each capable of delivering up to 72 kW of power.
Unknown No public record of construction cost since this did not receive public funding.
Electricity Usage
See Graph for a visual representation of monthly electricity consumption as recorded by the meter.
Site Information
Location Address: 7795 Arundel Mills Blvd., Hanover, MD 21076 County: Anne Arundel Facility Type: Parking Garage Coordinates: 39.153270, -76.743849 Directions: On third floor of parking garage at Hotel at Arundel Preserve. Map Link: OpenStreetMap
Potomac Edison owns and operates a Level 2 electric vehicle charging station in the town of Clear Spring, Maryland. The charging station is located in a public parking lot on N. Hawbaker Cir., one block north of National Pike/Cumberland Street. It’s about a 0.4 mile walk to the library and about 0.3 mile from McDonald’s. The two-port Level 2 charging station is part of Potomac Edison’s EV Driven program and uses the ChargePoint network.
$22,554.71 Total site construction cost plus $560.00 annual operating cost
Revenue vs Electricity Cost
-$241.39 Deficit (Since Inception)
Metric
Amount
Energy Used
252 kWh
Revenue
$44.52
Electricity Cost
$285.91
Deficit
-$241.39
Note: This calculation only reflects the difference between electricity costs and revenue as of June 30, 2024. Other operating expenses, such as maintenance and repair costs, are not included.
Electricity Usage
Clear Spring, MD – EV charging utilization Jan. 1 to Jun. 30, 2024
Site Information
Location Address: N Hawbaker Cir, Clear Spring, MD 21722 County: Washington Facility Type: Parking Lot Coordinates: 39.657069, -77.930968 Directions: At SE corner of parking lot on N Hawbaker Cir. Map Link: OpenStreetMap
Pepco manages an EV charging station at Acredale Community Park in College Park, Maryland, with four Level 2 chargers. As of October 10, 2024, all four have been offline for nearly six months. EV drivers have been unable to use this site—which opened two years ago—due to what Pepco describes in their semi-annual report to the Public Service Commission as “communication issues.” Filed on August 1, 2024, the report notes that the “location requires troubleshooting.” This prolonged outage, which appears to have an easy fix, has left EV drivers frustrated and ratepayers—who funded these stations—feeling deprived.
$91,954 Total site construction cost per the Maryland PSC PC44 EV Pilot Program
Category
Amount
Labor
$54,091
Materials
$24,349
Network
$5,830
Utility
$7,684
Total
$91,954
Revenue vs Electricity Cost
-$438.87 Deficit (Since Inception)
Metric
Amount
Energy Used
3,449 kWh
Revenue
$564.82
Electricity Cost
$1,003.69
Deficit
-$438.87
Note: This calculation only reflects the difference between electricity costs and revenue as of June 30, 2024. Other operating expenses, such as maintenance and repair costs, are not included.
Electricity Throughput Trend
Acredale Community Park EV charging monthly usage trend in kWh
Southern Maryland Electric Cooperative (SMECO) owns and operates this EV charging station at the Charlotte Hall Library in St. Mary’s County, MD. It has a single DC fast charger rated at 50 kW. See all the pertinent details below.
Charger Construction Cost
$106,688.75 Total site construction cost per the Maryland PSC PC44 EV Pilot Program
Category
Amount
Equipment
$81,064.13
Contractor
$5,000.00
Network
$7,138.00
Utility
$13,486.62
Total
$106,688.75
Electricity Cost vs Revenue
$1,393.17 Surplus (Since Inception)
Metric
Amount
Energy Used
31,070 kWh
Revenue
$9,028.82
Electricity Cost
$7,635.65
Surplus
$1,393.17
Note: This calculation only reflects the difference between electricity costs and revenue as of June 30, 2024. Other operating expenses, such as maintenance and repair costs, are not included.
Trend Graph: Monthly Electricity Dispensed in kWh
Charlotte Hall Library EV charging monthly usage trend in kWh
Site Information
Location Address: 37600 New Market Rd., Charlotte Hall, MD 20622 County: St. Mary’s Facility Type: Library Coordinates: 38.4732855, -76.7764742 Directions: At SE corner of library parking lot. Map Link: OpenStreetMap
Baltimore Gas and Electric owns and operates this EV charging station at the Whitmore Garage in Annapolis, MD. Located on a lower floor of the pay parking garage.
Charger Construction Cost
$151,474 Total site construction cost per the Maryland PSC PC44 EV Pilot Program
Category
Amount
Labor
$90,702
Material
$48,872
Network Fees
$11,900
Utility Administration
–
Total
$151,474
Electricity Cost vs Revenue
-$15,825.25 Deficit (Since Inception)
Metric
Amount
Energy Used
23,843 kWh
Revenue
$4,981.42
Electricity Cost
$20,806.67
Deficit
-$15,825.25
Note: This calculation only reflects the difference between electricity costs and revenue as of June 30, 2024. Other operating expenses, such as maintenance and repair costs, are not included.
Trend Graph: Monthly Electricity Dispensed in kWh
Whitmore Garage EV charging monthly usage trend in kWh
Site Information
Location Address: 37 Clay St., Annapolis, Maryland 21401 County: Anne Arundel Facility Type: Pay Parking Garage Coordinates: 38.978757, -76.496354 Directions: Enter the parking garage from Clay Street. Map Link: OpenStreetMap
Delmarva Power and Light owns and operates this 50 kW EV charging station at Wye Mills Park and Ride, Lot B in Wye Mills, MD. Located at the intersection of Route 50 and Route 404, this DC Fast Charger is on the way to the Maryland and Delaware beaches.
Charger Construction Cost
$178,072 total site construction cost per the Maryland PSC PC44 EV Pilot Program
Labor
Matl
Netwk
Admin
Total
$114,370
$48,075
$2,862
$12,765
$178,072
Profit/Loss – Revenue vs Electricity Bill
-$4,292.21 (Loss) Since opening on 12/29/22 to 06/30/24
kWh
Revenue
Elec. Bill
Profit
25,300
$7,771.22
$12,063.43
-$4,292.21 (Loss)
Trend Graph: Monthly Electricity Dispensed in kWh
Wye Mills Park and Ride EV charging monthly usage trend in kWh
Site Information
Location Address: 101 Wye Trading Dr., Wye Mills, Maryland 21679 County: Queen Anne’s Facility Type: Parking Lot Coordinates: 38.93961, -76.06308 Directions: In the parking lot on the western side of Route 50 at Route 404. Map Link: OpenStreetMap
This virtual charger audit of Maryland’s Tesla Superchargers is intended to complement my ongoing assessments of utility-owned public charging stations. The aim is to compile independent data points to evaluate charger reliability against the state’s 97% uptime target.
On October 4, 2024, I used the Tesla app to check the availability of all 531 Tesla Supercharger stalls across 59 active locations in Maryland. Each Supercharger location in Maryland has between four and 16 stalls.
Overall Port Availability on 10-04-2024: 99.1%
The audit found that 5 out of 531 Supercharger stalls (0.9%) were reported as out of order in the Tesla app, resulting in an overall availability of 99.1%.
Maryland Supercharger Status on 10-04-2024
This level of availability aligns with the consistently high reliability of Tesla Supercharger ports that I documented during the summer of 2023. During those months, we drove to hundreds of Supercharger locations across the United States. Often, we visited more than a dozen sites in a single day without encountering any problems and being able to charge on the first attempt.
Potomac Edison (PE) operates a network of 20 DC fast chargers and 77 Level 2 ports spread across 43 locations in its service area. As a regulated utility, PE is required to maintain 97% uptime for its charging stations.
October 3, 2024 Charger Audit Results
This virtual charger audit of PE’s EV Driven network found mostly favorable results. While all DC fast chargers were online and available, two Level 2 ports were essentially “offline” due to their absence from online directories.
Key Findings:
DC Fast Chargers: 100% availability.
Level 2 Ports: 97% availability (75/77 ports).
Myersville Town Hall: A previously listed dual-port Level 2 station has mysteriously disappeared from online directories.
Issues and Concerns:
Missing Level 2 Ports: The absence of two Level 2 ports from online directories makes it difficult for EV drivers to locate and use them.
Myersville Town Hall Station: The reason for the station’s removal from online directories remains unclear. Parking restrictions and potential conflicts may have played a role.
Recommendations:
Update Online Directories: Potomac Edison should ensure that all charging stations are accurately listed and updated in online directories.
Investigate Myersville Town Hall Station: PE should investigate the reasons for the station’s disappearance and work with local authorities to address any issues including onsite signage.
Improve Communication: PE should provide clear communication to EV drivers about charging station availability and any known issues.
Overall, while Potomac Edison has achieved a high availability rate for its DC fast chargers and Level 2 ports, the uncertainty surrounding the Myersville Town Hall station is an issue that could be addressed to improve the overall user experience.
Detailed Audit Results
On October 3, 2024, I conducted a virtual charger audit of PE’s “EV Driven” network, checking the status of all 97 charging ports using ChargeHub and ChargePoint apps. Notably, both DC fast chargers at the Rocky Gap Resort, previously reporting as “Out of Service” last week, are now online and available.
Myersville Town Hall Station
The dual-port Level 2 station installed at Myersville Town Hall in May 2022 has disappeared from both the ChargePoint app and the U.S. Department of Energy’s Alternative Fuels Data Center.
A notable change at this location is the removal of the “no parking except while charging” sign, leaving a “parking for town business only” restriction in place. The town indicated that this decision followed several verbal altercations over parking access to the charging station. I don’t know whether these incidents are related to the station’s removal from the map, but it could be a factor.
Myersville, MD Town Hall – anti-ICEing signs removedRead More …
Charger Audit: Pepco EVsmart Network, October 02, 2024
In 2019, the Maryland Public Service Commission approved a pilot program allowing five of the state’s utility companies to own and operate public charging stations. Potomac Electric Power Company (Pepco) runs one of these networks under the “EVsmart” brand, with 19 DC fast chargers and 233 Level 2 ports spread across 86 locations in its service area. By regulation, Pepco, like other utilities, must maintain 97% uptime for its charging stations. This means that each charging port must operate as intended and supply electricity at least 97% of the time annually, measured in minutes.
On October 2, 2024, I conducted the third in a series of virtual “charger audits” of Pepco’s EVsmart network, checking the online status of all 252 charging ports using the ChargeHub and Shell Recharge apps. While on-site audits provide the most accurate data, conducting them weekly is not feasible. That’s why I’m documenting these online audits to track the status of every port in Maryland’s utility-run charging program remotely.
It’s important to mention that I’ve personally visited all of Pepco’s public charging locations, and I’m familiar with their setups. For some of the stations flagged as offline in this audit, I’ve visited them recently and can confirm that the app status accurately reflected their condition.
79% Availability on October 01, 2024
This audit showed that only 79% of Pepco’s charging ports were online and available or in use, falling well below the 97% uptime target. The chart above reflects a persistent gap, with availability declining from 81% to 79% over the last three weeks. According to uptime standards, any charger offline for more than 11 days a year doesn’t meet the 97% requirement, and many of these ports have already dipped below that threshold.
Olney Manor Rec. Park DCFC Offline
See the video below showing the offline charger at Olney Manor Rec Park Baseball Field (Station ID 43408), which I reported to Shell Recharge on September 28, 2024. The customer service representative said a ticket would be created, but as of today, five days later, the charger remains offline.
Uptime Claims Contradict Performance at Olney Manor Rec Park Baseball Field Charger
Charger Audit: SMECO EV Recharge Network, October 01, 2024
Five years ago, the Maryland Public Service Commission approved a pilot program allowing the state’s largest utilities to own and operate public charging stations. Southern Maryland Electric Cooperative (SMECO) runs the smallest of these utility-operated networks, branded “EV Recharge,” which includes four DC fast chargers and 68 Level 2 ports at 36 locations across their service area. By statute, SMECO, like other utilities, must maintain 97% uptime for each charging station, meaning every charging port must function as designed and dispense electricity at least 97% of the time annually, measured in minutes.
On October 1, 2024, I conducted the third in a series of virtual “charger audits” of SMECO’s EV Recharge network, reviewing the online status of all 72 charging ports using the ChargeHub and Shell Recharge apps. While in-person audits provide the most accurate data, conducting them weekly is impractical. That’s why I’m tracking the status of every port in Maryland’s utility-owned public charging program through these online audits.
It’s worth noting that I’ve personally visited all of SMECO’s public charging sites and am familiar with their locations. For the stations reported as offline in this audit, I visited those specific sites in July and can confirm the app statuses accurately reflected their condition at that time.
88% Availability on October 01, 2024
The latest charger audit of SMECO showed that only 88% of the charging ports were online or in use, falling short of the 97% uptime target. One offline Level 2 unit is located at White Plains Regional Park. When I visited that station in July, the screen was damaged, and the charger was unable to dispense a charge. According to SMECO’s most recent semi-annual report to the PSC, uptime at this location was 57.3%, with vandalism cited as the issue. While vandalism is a valid challenge, there should be limits on how long a station can remain non-operational, regardless of the cause. Extended downtime is unacceptable, especially in light of Maryland’s ambitious EV adoption goals.
See the video below, recorded on July 27, 2024, showing the damaged EVSE screen at White Plains Regional Park.
