Although our Department is better known for testing gas stations, electric vehicle chargers, if used commercially (charge a fee for use), are another device type we inspect and test for accuracy.
Electric vehicle supply equipment (EVSE) owner requirements
To ensure compliance with California Business and Professions Code (BPC), Division 5, electric vehicle (EV) charging station owners must register with the local county's weights and measures department, regardless of installation date. Depending on the installation date, a fee will also be applied. This applies to stations charging per kilowatt-hour or time-based fees, though some exceptions may apply. Additionally, these stations must clearly display contact information, including the business name, the complete mailing address, and the phone number of the responsible party for the electric vehicle supply equipment (EVSE).
Beyond these general requirements, specific mandates apply based on the charger's installation date and type. Level 2 (AC) chargers installed on or after January 1, 2021, must be "Placed in Service" by a state-certified Registered Service Agent (RSA). These RSAs test the station’s measurement capabilities and apply a compliance sticker upon successful completion of a field test. Similarly, DC Fast Chargers installed on or after January 1, 2023, must also undergo this "Placed in Service" process by a Registered Service Agent to ensure compliance.
What’s RSA?
Registered Service Agents (RSAs) are professionals authorized by the State of California to perform necessary tests and verifications of EVSE stations, gasoline stations, and commercial weighing facilities. They conduct field tests to verify compliance with state measurement standards, apply compliance stickers, and notify the local county of the station's status.
As an EV charging station owner, staying informed about and adhering to California’s weights and measures regulations is crucial. If your station was installed after the specified dates, or if you charge a fee for services, ensure you work with a Registered Service Agent to meet state compliance requirements. For further assistance, contact your local county weights and measures department.