ISO 15118 Standard: What It Is and How It Works?

ISO 15118 is a standard for communication between EV and charging stations, Enables interoperability between EV and charging systems. Learn more here

ISO15118 is a standard for communication between electric vehicles (EVs) and charging stations. ISO 15118 enables interoperability between different EV and charging systems. It includes provisions for secure communication, authentication, billing, and other functions. The standard is developed and maintained by the International Organization for Standardization (ISO), a non-governmental organization that develops and publishes international standards.


The development of ISO15118 began in the early 2010s, as the market for EVs and charging infrastructure began to grow. The standard enables a standardized, interoperable system for communication between EVs and charging stations.

The first version of ISO 15118 was published in 2013. The most recent version, ISO 15118-20:2022, was published in 2022.

New capabilities

Some of the capabilities that this standard adds include:

  • Secure communication: ISO15118 includes provisions for secure communication between the EV and the charging station. This can help protect against unauthorized access or tampering with the charging process.
  • Plug & Charge: The standard includes provisions for authentication of the EV, this can enable secure plug-and-charge capability, eliminating the need of an RFID.
  • V2G: The standard includes provisions for the support of V2G charging.


OCPP support

The OCPP 2.0 specification, which was first published in April 2018 and revised in April 2020, enables the use of ISO 15118 for communication between a charging station and an electric vehicle.

OCPP 1.6 also supports ISO 15118 Plug & Charge, as explianed in the Open Charge Alliance application note.

Plug & charge

The “Plug & Charge” feature of ISO 15118 is a system that allows an electric vehicle (EV) to be plugged into a charging station and start charging automatically, without the need for the driver to manually initiate the charging process or provide payment information. 

To support the “Plug & Charge” feature, both the EV and the charging station must be equipped with the necessary hardware and software to support secure communication and authentication using ISO 15118. Drivers can initiate the charging process automatically without the need for manual intervention.

The “Plug & Charge” feature of ISO 15118 can help to make EV charging more convenient for drivers, as it eliminates the need to manually initiate the charging process or provide payment information. It can also help to streamline the billing and payment process, as the necessary information can be exchanged automatically between the EV, the charging station, and the back-end system that manages billing.

In January 2022, the CCS initiative CharIN, presented the official logo of Plug & Charge to identify the charging points equipped offering this function at a glance. Charging point operators (CPO) and car manufacturers can display the logo if they support this capability.

Plug & Charge Logo

The official logo of Plug & Charge


Wevo Energy is a leading provider of software solutions for smart EV charging. We provide a fully OCPP certified (full certification and security certification) software platform that supports every scenario: apartment complexes, workplaces, fleets, destination and public charging.


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