Supercharger - Plug-In Sites

Is Tesla’s 80% Congestion Fee Now Illegal in Maryland?

April 29, 2026April 29, 2026 Lanny

Congested Tesla Supercharger in Maryland

Maryland Governor Wes Moore signed companion bills SB649 and HB969 into law yesterday. The legislation, which becomes effective on July 1, 2026, is supposed to establish a uniform method of sale for electricity at public charging stations. Contained within the language of the bills is a provision that appears to directly conflict with how Tesla assesses congestion fees at busy Supercharger locations.

How Supercharger Congestion Fee Works

According to Tesla, congestion fees apply when a Supercharger site is busy and a vehicle’s battery reaches 80% state of charge. At that point, the driver is notified and a congestion fee, typically $0.50 per minute, begins accruing. If the driver unplugs within five minutes, the fee is waived.

Unlike idling fees, which usually begin once charging stops, Tesla’s congestion fees kick in while the vehicle is still drawing power. The idea is to encourage drivers to vacate the charging space when charging speed has dropped significantly, which happens at around 80%.

Tesla Supercharger Price Update in Maryland: April 2026

April 23, 2026April 23, 2026 Lanny

Tesla Supercharger price Bel Air, MD - Tobin Crossing — The peak price for Tesla owners at the Bel Air, MD – Tobin Crossing Supercharger is $0.41/kWh as of April 9, 2026

Tesla revised its Supercharger prices around April 9, 2026. This price update resulted in mostly increases across the state, with some stations having slight price decreases during off-peak hours. On average, the peak price for Tesla owners or drivers of other vehicles who pay the monthly membership fee increased by about three cents from $0.40 to $0.43 per kWh. See the interactive table below to see the April 9, 2026 price changes at Maryland Supercharging locations.

Tesla’s Supercharger Pricing

Tesla’s Supercharger pricing model was originally a single flat rate per kWh that applied 24/7 but varied by location. However, this approach evolved with the introduction of variable time of use pricing, which is now used at nearly 75% of Maryland Supercharger sites. This helps to balance daily station utilization by incentivizing usage during less busy periods by offering lower prices during those times. This also helps to ease queues of drivers waiting to charge which leads to a better experience.

Tesla’s stated goal is to keep Supercharger operating costs low by incorporating efficiencies of scale and optimizing utilization. These cost savings can be passed on to customers. Tesla’s operational efficiencies and time of use price incentives helps to sustain investment in expanding the Supercharger network as well as maintain reliable charging.

The Waffle House Rule: What EV Charging Prices Should Look Like

April 7, 2026 Lanny

Roadtrip Lessons

If you want to learn the truth in the world, you’ve got to get out in it. We’ve just returned from a 4,200 mile EV roadtrip through the south eastern United States where we stopped at 130 charging stations.

There is no greater touchstone for ground truth in America than a visit to a Waffle House. FEMA uses the number of their restaurants that are able to remain open – “The Waffle House Index” – as an unofficial metric to assess disaster severity.

Gazing at the Waffle House menu for a late dinner while our car charged nearby, I noticed these words at the top, “prices include sales tax.” If Waffle House can do it, and gas stations do it, why can’t EV charging providers state their prices inclusive of all taxes? This inspired me to post a proposal for “the Waffle House Rule” on EV charging prices. Include the taxes in the advertised per kWh price.

The previous day, I had stopped at a fast charger that is owned and operated by Florida Power and Light. The Florida Public Service Commission had recently granted the utility a price increase from $0.32/kWh to $0.45/kWh at FPL owned fast chargers. When I charged at an FPL charger last week, my total bill for 10 kWh was not $4.50, but $5.80 after taxes and fees.

Tesla Supercharger Price Update in Maryland: February 2026

February 17, 2026February 17, 2026 Lanny

Tesla revised its Supercharger prices around February 13, 2026. This price update resulted in mostly decreases across the state, with some stations having slight price increases during off-peak hours. On average, the peak price for Tesla owners or drivers of other vehicles who pay the monthly membership fee declined by about two cents from $0.42 to $0.40 per kWh. See the interactive table below to see the February 13, 2026 pricing at Maryland Supercharging locations.

Tesla’s Supercharger Pricing

Tesla’s Supercharger pricing model was originally a single flat rate per kWh that applied 24/7 but varied by location. However, this approach evolved with the introduction of variable time of use pricing, which is now used at nearly 75% of Maryland Supercharger sites. This helps to balance daily station utilization by incentivizing usage during less busy periods by offering lower prices during those periods. This also helps to ease queues of drivers waiting to charge which leads to improved driver experience.

Tesla has stated that their goal is to drive down charging costs by incorporating efficiencies of scale and optimizing utilization. These cost savings can be passed on to customers which helps to keep Supercharger prices down. Tesla’s operational efficiencies and time of use price incentives helps to sustain investment in expanding the Supercharger network as well as maintain reliable charging.

Columbia, MD Fast Charger Utilization 2021 – 2025

January 16, 2026February 6, 2026 Lanny

DC Fast Charger utilization graph Columbia MD yearly data 2021 to

Five Year DC Fast Charger Usage Trends

Since 2020, I have been closely monitoring the usage patterns of electric vehicle fast chargers near my home in Columbia, Maryland. This study includes a mix of CCS, CHAdeMO, and Supercharger stations operated by EVgo, Electrify America, Tesla, a High’s convenience store and the local electric company, BGE. My approach is simple: I track electricity consumption at each location by recording the meter readings each month. The goal of this project is to gain insights into how fast charging infrastructure is being utilized in our region and to identify real world trends in usage growth.

The graph above visualizes year-by-year utilization growth at the five different fast charging sites between 2021 and 2025. Previous posts have reported the average daily kWh per stall dispensed on a quarterly basis over periods of a single year or 18 months. I calculate the average daily throughput per site by taking the total kWh of electricity in the period of time and divide it by the number of days in the period. Then the average daily site usage figure is divided by the number of charging ports at the site to normalize the metric to allow comparison.

New Tesla Supercharger Now Operational in Bel Air, Maryland

March 5, 2025March 5, 2025 Lanny

Bel Air, MD - Tobin Crossing Tesla Supercharger — Bel Air, MD – Tobin Crossing

A Tesla Supercharger opened February 21 at the Royal Farms Store located at 2692 Tobin Xing in Bel Air, Maryland.

This Supercharger site has 12 “V4” charging stalls with V3 charging cabinets that are capable of delivering up to 325 kW. The Supercharger is on the north west side of the Royal Farms parking lot and has permeable pavement to reduce rainwater runoff.

It is open to non-Tesla vehicles that have a NACS port or bring their own adapter. However, the integrated CCS adapters in the V4 stalls don’t seem to be available yet. This functionality may be switched on in the future.

Hanover, MD – Tesla Supercharger Station

October 12, 2024October 12, 2024 Lanny

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.

Details of this Featured PlugInSite:

Construction Cost

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

Tesla Supercharger Charger Audit – October 4, 2024

October 5, 2024October 5, 2024 Lanny

Tesla Supercharger Charger Audit 10-04-2024

Tesla Supercharger Port Availability (10-04-2024)

Maryland Superchargers: 99.1%
Goal: 97% Uptime

Maryland Superchargers: Charger Audit Results

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.

Tesla Supercharger Charger Audit – September 27, 2024

September 28, 2024September 28, 2024 Lanny

Tesla Supercharger Charger Audit map 09-27-2024

Tesla Supercharger Port Availability (09-27-2024)

Maryland Superchargers: 99.2%
Goal: 97% Uptime

Maryland Superchargers: Charger Audit Results

This Tesla charger audit is intended to complement my ongoing assessments of utility-owned public charging stations in Maryland. The aim is to compile independent data points to evaluate charger reliability against the state’s 97% uptime target.

On September 27, 2024, I conducted a virtual audit of all 531 Tesla Supercharger stalls across 59 active locations in Maryland, with each location containing between four and 16 stalls.

Overall Port Availability on 09-27-2024: 99.2%

The audit found that four out of 531 Supercharger stalls (0.8%) were reported as out of order in the Tesla app, resulting in an overall availability of 99.2%.

Location	Stall	Status
Elkridge, MD	1D	Out of Order
Brandywine, MD	1A	Out of Order
Easton, MD – Ocean Gateway	1A	Out of Order
Bethesda, MD – Elm Street	3C	Out of Order

Maryland Supercharger Status on 09-27-2024

This level of availability aligns with the consistently high reliability of Tesla Supercharger ports that I documented during the summer of 2023. Over several months, I conducted on-the-ground assessments at hundreds of Supercharger locations across the United States, evaluating thousands of ports. Often, we visited more than a dozen sites in a single day without encountering any reported or observed outages.

Tesla Tops, BGE Flops: A Data-Driven Look at DC Fast Charger Usage Near Columbia Maryland

May 2, 2024May 2, 2024 Lanny

Fast Charger Showdown: Local Usage Trends in 2023

Here in Columbia, Maryland, I’ve been closely monitoring the usage patterns of nearby electric vehicle fast chargers since 2020. This includes a mix of CCS/CHAdeMO stations from EVgo, Electrify America, Baltimore Gas and Electric (BGE), and Tesla Superchargers. My approach is simple: I track the electricity consumption at each location by recording monthly meter readings and analyzing the data over time. The goal? To gain valuable insights into how fast charging infrastructure is being utilized in this region and identify trends in usage growth.

The chart above visualizes how much people utilized the fast chargers at four different locations throughout 2023. To understand this, I calculated the average daily usage per charger at each site. Here’s how I did it: I took the total electricity used each quarter, divided it by the number of days in the quarter, and then divided that daily usage by the number of fast charger dispensers at the site.

While all four locations saw an increase in usage compared to earlier quarters, there are some significant differences. The utilization rates and growth rates vary greatly between stations. Notably, in the last quarter of 2023, each Tesla Supercharger port dispensed, on average, more than three times the amount of electricity daily compared to the EVgo chargers. Interestingly, the BGE chargers, despite being less than a mile away from the Electrify America station, have a significantly lower utilization rate.