Introduction to OCPI
The Open Charge Point Interface (OCPI) is a leading protocol enabling scalable and automated electric vehicle roaming. Managed by the EVRoaming Foundation, OCPI fosters seamless interactions between Charge Point Operators and eMobility Service Providers. It empowers EV drivers with effortless access to charging infrastructure across various networks worldwide, while reducing the complexity of traditional roaming solutions like centralized hubs.
What is OCPI?
OCPI facilitates real-time data exchange about EV charging locations, availability, and tariffs.
By providing a standardized framework, OCPI simplifies roaming arrangements, enabling EV drivers to access any connected charge point without pre-registration. This improves transparency, enhances market development, and ensures operators can execute their business models effectively.
Origins and global reach
OCPI was first conceptualized in 2012 by ElaadNL, a Dutch innovation hub specializing in Smart Charging and charging infrastructure. Collaborating with prominent grid operators in the Netherlands, ElaadNL sought to streamline communication between EV charging operators and service providers by introducing a standardized protocol. This initiative aimed to simplify connections across various charging networks, fostering greater interoperability and ease of use for the growing EV ecosystem.
Initially overseen by the Netherlands Knowledge Platform for Public Charging Infrastructure (NKL), OCPI’s governance transitioned to the EVRoaming Foundation in May 2020. The first official version, OCPI 2.0, was launched in 2015, laying the groundwork for what has become a globally embraced standard. Since then, the protocol has seen continuous refinement, with version 2.2.1 currently in widespread use worldwide. This global footprint spans Europe, the Americas, Asia, and Oceania, supporting seamless EV roaming and data exchange among diverse stakeholders.
OCPI 3.0 - introduction to a new version
The upcoming OCPI 3.0 addresses limitations in earlier versions and introduces enhancements. Notable features include support for Plug & Charge and Autocharge, robust communication between CPOs and drivers, and strengthened security measures. By adopting industry-standard frameworks and simplifying interoperability, OCPI 3.0 aligns with emerging trends, such as autonomous vehicle charging and GDPR-compliant data sharing.
With OCPI, the EV ecosystem takes a significant step toward a more interconnected and efficient future, driving the global transition to sustainable mobility.
Upgrades to Existing Functionalities
Enhanced Communication Between CPOs, eMSPs, and Drivers
OCPI 3.0 resolves previous communication gaps between Charge Point Operators (CPOs) and e-Mobility Service Providers (eMSPs). Earlier versions did not allow direct messaging to inform EV drivers about issues such as billing or charging disruptions. In OCPI 3.0:
- CPOs can send real-time push notifications to EV drivers through the eMSP's communication channels, such as mobile apps.
- eMSPs can display essential updates like pricing changes or error messages directly on the charge point screen, significantly improving transparency and reducing user frustration.
Session Credit Management
To prevent charging sessions from exceeding reserved credit limits, OCPI 3.0 introduces better control mechanisms. While earlier versions relied on frequent monitoring and manual intervention, this version provides automated functionality to ensure sessions remain within the predefined credit scope, enhancing reliability for both providers and users.
Improved Data Security
OCPI 3.0 enhances security by advocating the use of industry-standard protocols, ensuring data integrity during transmission. The focus on securing direct and hub-based connections minimizes risks of unauthorized data alteration, ensuring higher trust among roaming partners.
New Features and Capabilities
Support for Plug & Charge and Autocharge
OCPI 3.0 introduces support for Plug & Charge and Autocharge, enabling vehicle authentication directly through the charging cable connection. This eliminates the need for RFID cards or mobile apps, simplifying the process for EV drivers. This functionality is particularly valuable for:
- Autonomous vehicle charging scenarios, where no human interaction is available.
- Enhanced convenience, as drivers can start charging by simply connecting their vehicle to the station.
Dynamic Pricing and Cryptocurrency Payments
The new version expands payment options by allowing ad-hoc tariffs for local payment terminals and supporting cryptocurrency payments. Drivers can choose from multiple currencies, and updated tariffs can be displayed on the charge point in real time.
Grid Integration and Smart Charging
OCPI 3.0 supports the exchange of detailed load and frequency measurements with grid operators. This functionality enables grid operators to balance energy loads efficiently, maintaining grid stability and optimizing charging schedules in real-time.
GDPR and Data Privacy Compliance
Recognizing the importance of data privacy, OCPI 3.0 incorporates features aligned with the European GDPR framework. This includes functionality for data access and deletion requests to comply with "right to access" and "right to be forgotten" regulations.
Future-Ready Roaming and Migration
With OCPI 3.0, the protocol is equipped to handle complex roaming scenarios. For instance, it facilitates seamless migration when an eMSP’s customers transition to a new provider due to mergers or acquisitions, ensuring uninterrupted service during ownership changes.