What is OCPP? (2024 Latest)

OCPP (Open Charge Point Protocol) is a globally recognized open communication protocol that enables seamless connectivity between electric vehicle (EV) charging stations and a central management system (CSMS) or billing platform. It facilitates remote control and monitoring of charging stations, and firmware updates, and ensures efficient operation of the charging infrastructure. Currently, OCPP is implemented in over 20,000 facilities across 16 countries, becoming a key communication standard for EV charging infrastructure.

OCPP Version Overview

OCPP (Open Charge Point Protocol) 1.6

OCPP was first introduced in 2010, initially gaining traction in Western Europe. In 2015, the OCPP 1.6 version was released and quickly adopted by CS (Charging Stations) and CSMS (Central Management Systems) manufacturers worldwide. Key features of OCPP 1.6 include:

• Supports both SOAP and JSON communication protocols.
• Enables smart charging with load balancing and charging profile management.
• Supports local list management.
• Provides detailed reporting on charging station status.
• Allows sending requests for charging point status and time-based messages.
• Features slight improvements over OCPP 1.5.

OCPP (Open Charge Point Protocol) 2.0.1

Released in 2018, OCPP 2.0.1 is a major upgrade from version 1.6, although the two versions are not backward-compatible. By 2020, OCPP 2.0.1 had become the industry standard for communication between CS and CSMS. Its key improvements include:

• More robust device management, allowing for remote configuration and monitoring.
• Improved transaction handling and management.
• Enhanced security measures.
• Expanded support for smart charging scenarios.
• Introduces display screen and message delivery functionality.

OCPP (Open Charge Point Protocol) 2.1

OCPP 2.1 is the latest version, currently under public review. Building upon OCPP 2.0.1, it offers more advanced features and backward compatibility. New key functionalities include:

• Support for DER (Distributed Energy Resources) control.
• Bi-directional charging capability (V2G – Vehicle to Grid).
• Support for ISO 15118 Plug and Charge.
• Enhanced smart charging features.
• Temporary payment and local cost calculation support.
• Introduces secure dynamic QR code functionality.

Key Features of OCPP

Load Balancing  

OCPP supports smart load balancing, ensuring that when multiple EVs are charging simultaneously, power distribution is managed efficiently. This prevents grid overload and optimizes power usage across charging stations.

Reporting and Monitoring  

OCPP allows real-time monitoring of charging station status and generates detailed reports. Through OCPP, operators can remotely monitor the usage of the charging points and access charging data, enhancing management efficiency.

Security Features  

With the increasing adoption of EV charging infrastructure, security has become a critical aspect of OCPP. Both OCPP 2.0.1 and OCPP 2.1 introduce higher security standards, including support for secure dynamic QR codes, ensuring secure payments and operations for users.

Communication Protocols  

OCPP supports multiple communication protocols, including traditional SOAP and modern JSON, making it flexible and adaptable to different charging infrastructure needs.

Secondary Features of OCPP

Offline Support  

OCPP allows charging stations to continue processing transaction data even when disconnected from the central management system (CSMS). During offline periods, OCPP uses temporary transaction IDs (in version 1.6) or sequence numbers (in version 2.0.1 and above) to record transaction information, ensuring no data is lost due to network issues. Once reconnected, the system will transmit the offline data in chronological order to complete the records.

Local Whitelist  

OCPP supports a local whitelist feature, allowing charging stations to authenticate users based on a preloaded list, even when offline. This ensures continuity of service for users in areas with unstable network connectivity or during system maintenance.

Charging Profile Management  

OCPP enables custom charging profile settings based on various factors like time slots, user types, or load conditions. This functionality helps prevent grid overload, optimize power usage, and provide personalized charging experiences.

Display and Message Support  

OCPP 2.0.1 and 2.1 versions offer support for charging station displays, allowing operators to show custom messages or advertisements on station screens. This enhances the user experience and provides operators with additional revenue opportunities.

Although these secondary features may not be as widely known as OCPP’s core functions, they significantly improve OCPP’s flexibility and adaptability, enabling charging station operators to manage their infrastructure more efficiently and reliably across different environments.

Cost Calculation in OCPP

OCPP allows the CSMS to dynamically calculate charging costs based on various factors such as time, power demand, energy consumption, and contract type. This flexible pricing model helps meet different customer needs and improves operational efficiency at charging stations.

Benefits of OCPP

OCPP’s openness provides operators with numerous options without being locked into specific hardware vendors. Its high compatibility enables charging stations to connect seamlessly with hardware devices and software platforms from different brands.

OCPP Operating Models

Self-Operation  

In this common model, charging stations are operated and managed directly by the owner. Operators can choose hardware and software based on their needs and use the OCPP platform for monitoring and management.

Third-Party Operation  

With the rapid growth of charging infrastructure, many companies now offer third-party operation services. In this model, a third-party operator manages the day-to-day operations and maintenance of the charging stations, while users simply access the provided services.

Utility or Government Operation  

In some regions, governments or energy companies are directly involved in building and operating EV charging stations, ensuring standardization and widespread adoption of charging infrastructure.

OCPP Implementation – Frequently Asked Questions

How much does it cost?  

The cost of OCPP software and integration services generally ranges from $5,000 to $20,000, depending on functionality and complexity. Some companies offer monthly subscription options to simplify budget management.

How long does it take to implement OCPP?  

The typical deployment time for an OCPP server is 4 to 8 weeks, covering installation, integration, testing, and go-live processes. Actual project timelines may vary based on the size of the charging station network.

How do you choose an OCPP server platform?  

Look for platforms that support the latest versions of OCPP, especially OCPP 2.0 or higher. Additionally, ensure the platform seamlessly integrates with major hardware providers, billing systems, and monitoring dashboards. Cloud platforms can also simplify the deployment process.

Where is OCPP applicable?  

OCPP is suitable for both public and private charging stations. For private home chargers, the functionalities are typically simpler, such as firmware updates, remote control, and smart charging. Public charging stations require more complex management and monitoring features.

Do you offer paid consultation services?  

Our consultation services are generally free of charge. If you have any questions about OCPP, feel free to reach out via email, and our team of experts will provide detailed assistance.