EVSE Registration

EVSEs not available to the public such as those found in multi-family dwellings or private residence will not currently be licensed by the Weights and Measures program. 

These devices must have a means (electronic or physical) to prevent general public access. 

Additionally, these devices should not appear on any websites or applications which help members of the public find and/or pay for EVSE services.

EVSE devices installed prior to January 1, 2023, are referred to as legacy chargers and are not required to have NTEP certification.

Legacy chargers are required to be registered in accordance with Maryland requirements. These devices will not require a placed-in-service report from an RSA as they are already in service.

They are required to meet the following requirements:

• Operable for customer use.
• Have a customer in​dication.
  • Provide unit pricing per kWh and additional fees prior to the start of the charging session.
  • Quantity of energy delivered throughout the session.
  • Total purchase of energy and additional fees per charging session.
• Correct method of sale for electricity when used in a vehicle fueling application.
• Able to provide a paper or electronic recorded representation to a customer that includes the following information.
  • The total quantity of energy delivered with unit of measurement.
  • The total computed price of energy sale.
  • Date and time of transaction.
  • Unit price per kwh.
  • The maximum rate of energy transferred.
  • Any additional separate charges (for example parking time)
  • Unit price of time-based service.
  • The total purchase price for the quantity of time.
  • The final total price of the complete transaction. 
  • The EVSE unique Identification.
  • Business name and location. 
• Can not exceed 2% accuracy tolerance in favor of the business.

If a device is not capable of meeting these minimum requirements and is removed from service, it will be required to be replaced with an NTEP certified device. These devices will receive registration decals only and will not receive a certification decal.

All legacy devices will require replacement with an NTEP certified device by January 1, 2033.

• They are required to have a traceable NTEP certificate of Conformance.
  • If the device is actively undergoing Type Evaluation, it may be granted conditional use for a period of time.
  • If a device has CTEP, it will be granted conditional use pending an NTEP certificate of conformance. 
• These devices will not require a placed in-service report from an RSA as they are already in service.
• These devices are required to be registered with MDA prior to July 1, 2026.
• These devices are required to adhere to specifications, tolerances, and user requirements as outlined in NIST Handbook 44.

• These devices require a placed in-service notification by either the device owner or a registered service agency.
• A placed in-service report acknowledges that legal for trade devices are installed in accordance with Maryland Law and NIST Handbook 44 requirements. 
• Require registration with the department ahead of being available for a customer for a transaction.
• These devices are required to adhere to specifications, tolerances, and user requirements as outlined in NIST HB 44. 

• Low level enforcement action.
• The charger will continue to be in operation.
• The owner is required to take steps to gain compliance before the Weights and Measures Inspector returns.

• This is the mid-level in enforcement action.
• The charger is removed from service pending repairs.
• This action is taken when;
  • A rejected charger is not repaired within the specified timeline.
  • The violation poses a risk to the business or customer.
  • A consumer complaint against the device has been validated through investigation.
  • The charger is found to be more than 3 times the applicable tolerance as outlined in NIST HB 44.
• A yellow tag will be placed on the charger precluding it from further use.
• A charger that is under condemnation requires a return to service report be submitted upon repair from a registered service agency or a Weights and Measures inspector may return the charger to service upon verification the charger is accurate and correct.

• This is the highest level of direct enforcement action.
• A red stop-use tag will be placed on the charger precluding it from further use.
• This level of enforcement action is taken when;
  • A condemned charger has not been repaired in the specified timeline.
  • Repairs were attempted but did not correct the original violation with the device being returned to service.
  • The device is unregistered with MDA.
• The owner is required to take steps to gain compliance before an inspector returns.
• The owner or registered service agency is required to contact the office to discuss repairs and timelines.
• If a device is capable of repair, once repairs are completed the red tag is required to be returned to the charger and a return to service report is required to be submitted to [email protected].
• Only a Weights and Measures Inspector can return the charger to service if it is placed under a stop use order

An EVSE charger used in a transaction with a consumer to establish a charge is required to be registered with MDA Weights and Measures.

The registration fee is $75 per port.

Yes, each individual location will need to be separately registered. Please fill out one registration form per location and submit completed forms to [email protected]. If you have multiple locations a “mail group” can be created so that you will receive notifications for all locations at one email address.

Currently registration is open to all EVSE locations that are available to consumers through December 31, 2025. Starting January 1, 2026, all EVSE chargers are required to be registered before being available for consumer use. To register complete one application per location. Once received the office will assign an account number to the location and email an invoice for registration fees. To complete registration all fees are required to be paid within 30days of receipt.

Starting January 1, 2026, any unregistered charger found to be available to consumers for use will be removed from service until they are registered with MDA. Weights and Measures will officially place the charger into service.

Inspection- to visually assess an EVSE charger to ensure it correctly meets specification and user requirements. 

Testing – to verify the accuracy of the meter dispensing the electricity to an electric vehicle.

NIST (National Institute of Standards and Technology) Handbook 44 outlines the specifications, tolerances, technical requirements, user requirements, and test notes that pertain to weighing and measuring devices. The current edition of NIST Handbook 44 is adopted under Title 11 of the Agricultural Annotated Code of Maryland.

You will receive an emailed copy of the inspection report listing the violations. As the device owner it is your responsibility to correct any noted deficiencies within the specified time to gain compliance with Maryland law. Please contact the office with any questions.

This information is not directly available to the public. The program does not post inspection results for each device on a website.

All electrical energy kept, offered, or exposed for sale and sold at retail as a vehicle fuel shall be in units in terms of the kilowatt-hour (kWh). In addition to the fee assessed for the quantity of electrical energy sold, fees may be assessed for other services; such fees may be based on time measurement and/or a fixed fee.

An unattended EVSE shall have clearly and conspicuously displayed thereon, or immediately adjacent thereto, adequate information detailing the name, address, and phone number of the local party responsible for the device.

Any location that lacks a person physically onsite that is able to assist the customer during fueling operations.

As with any device that is unable to be verified at the time of the inspection, it will be rejected, which is the lowest level of enforcement action. The device can still be used pending a return inspection.

The manufacturer may apply to the NTEP program for evaluation. They may then be granted conditional use during evaluation period.