ISO 15118 enables secure communication between electric vehicles and charging stations in multi-tenant networks by defining a standardized protocol for vehicle-to-grid (V2G) transactions. It uses cryptographic methods to authenticate both parties, ensuring that only authorized vehicles can connect and charge. The standard also supports role-based access control, allowing different network operators to manage their charging infrastructure independently while maintaining secure, interoperable connections.
How it works in practice
In a multi-tenant environment, each charging station must verify the identity of the EV and the charging network operator before initiating a transaction. ISO 15118 achieves this through digital certificates and secure channels that are established during the connection process. These security measures prevent unauthorized access and ensure that payment and charging data remain confidential and tamper-proof across different network providers.
For example, a fleet operator using a shared charging station managed by a utility company would still be able to authenticate their vehicle and complete a secure transaction without exposing sensitive data to other users or network tenants. This is especially important in public charging networks where multiple entities manage different parts of the infrastructure.
What this means for charging network operators
For network operators managing multi-tenant charging environments, ISO 15118 provides a framework to maintain control over their systems while enabling interoperability. It allows them to define access policies and manage user permissions without compromising security. This is particularly valuable for operators who want to offer charging services to multiple stakeholders, such as utilities, fleet managers, or commercial property owners.
Operators can also use the protocol to track and bill individual users accurately, even when they share the same physical charging point. This granular control helps in optimizing revenue and ensuring compliance with local regulations, especially in markets where charging services are subject to specific licensing or reporting requirements.
Related Reading
For more on related topics, see: Chargepoint Alliance – EV Charging Interoperability.
Further reading: ChargeSphere – EV Roaming Hub | Tecell
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