What is Plug and Charge?
Definition
Plug and Charge is an advanced EV charging feature that allows drivers to start charging simply by connecting their vehicle to a charger. Authentication, authorization, and billing are handled automatically through encrypted communication between the car and the charging station.
Why Plug and Charge Matters
Traditional charging often requires RFID cards, mobile apps, or payment terminals, which can be cumbersome for drivers and costly for operators. Plug and Charge eliminates these hurdles, offering a seamless experience and reducing transaction complexity while enhancing customer satisfaction.
How it Works
Plug and Charge is enabled by ISO 15118, a communication protocol that allows secure exchange of digital certificates between the EV and the charging point. When the vehicle is plugged in, the system verifies the driver’s account and automatically initiates charging and payment without manual input.
Key Technologies / Features
This feature relies on public key infrastructure (PKI) for secure transactions, digital certificates stored in the vehicle, and backend systems integrated with the charging operator’s billing platforms. It is supported by both AC and DC charging systems.
Applications
- Public charging networks offering seamless user experiences.
- Fleet operators integrating automatic billing for multiple vehicles.
- Premium EVs supporting advanced ISO 15118 features.
- Highway corridors where convenience and speed are critical.
Benefits
Plug and Charge improves user convenience, reduces wait times, enhances security by removing unencrypted cards, and increases trust in public charging. For operators, it streamlines operations and reduces customer service queries related to payments.
Use Cases
Tesla and other automakers are integrating Plug and Charge to provide hassle-free charging experiences. In Europe, Ionity and other networks already support Plug and Charge across their CCS-enabled chargers. Fleets benefit from automatic billing consolidation for all vehicles.