Developing a Scalable OCPP Server for Seamless EV Charging & V2G Integration

CASE STUDY: Developing a Scalable OCPP Server for Seamless EV Charging & V2G Integration

Client Overview

Client: Institute of Fluid-Flow Machinery of the Polish Academy of Sciences (IMP PAN)
Industry: EV Charging & Energy Management
Project: V2G Integration for H2020 Serene, Sustenance, and V4Grid Projects
Objective: Build an OCPP 1.6j–compliant server enabling seamless EV charging and V2G functionalities within local EMS

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EXECUTIVE SUMMARY

Scalable EV Charging & V2G Integration

Codibly collaborated with IMP PAN to integrate two AC chargers (Enelion Lumina) and one V2G charger (eNovates Chademo) into local energy management systems across demo sites in Poland. By creating an OCPP 1.6j–compliant server, Codibly enabled:

Seamless communication between chargers and the 3rd-party Energy Management System (EMS)
V2G energy transfers and controlled discharge for grid stability
Simplified authorization and reporting for internal project needs
Energy usage statistics

Challenges

Integrating different AC and V2G chargers under a unified OCPP 1.6j framework
Ensuring grid stability and precise discharge control
Configuring an OCPP server for three different demonstration sites
Achieving secure charger access, dynamic power management, and robust data reporting

CHALLENGES

Key Obstacles to OCPP & V2G Integration

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Multiple Charger Types

• 2x AC (Enelion Lumina) + 1x V2G (eNovates Chademo)
• Inconsistent data formats and non-standard power settings

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Grid Stability

• Precise discharge control required for V2G
• Need for dynamic power management

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EMS Integration

• OCPP 1.6j compliance for real-time communication
• Requires simplified authorization & reporting

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Distributed Sites

• Demo environments in Poland
• Meeting local energy management requirements

SOLUTION

How Codibly Delivered an OCPP 1.6j-Compliant Server

Core OCPP 1.6j Compliance
• Implemented real-time communication for EV charging and V2G discharge
• Enabled advanced functionalities like RFID token validation and charging profiles

V2G Energy Transfers
• Integrated eNovates Chademo chargers for controllable bi-directional flows
• Precise discharge control and dynamic load management for grid stability

Non-Standard Charger Support
• Used SetVariable for custom power limitation commands
• Ensured comprehensive integration of AC chargers from Enelion

Future-Proof Architecture
• Built on Java Spring Boot and PostgreSQL on premise architecture for scalability
• Detailed energy transfer statistics, ensuring robust reporting

IMPLEMENTATION

Steps to Deploy the Charging & V2G Framework

Codibly worked closely with IMP PAN’s research teams to align agile development sprints with the internal project timelines of Serene, Sustenance, and V4Grid.

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Security & Access Control

• RFID token validation to secure charger usage
• V2G commands available only for external EMS

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Accelerated Delivery

• Utilized Codibly’s OCPP accelerator to reduce time-to-market
• Seamless integration with non-standard hardware

TECHNOLOGIES & FRAMEWORKS

Toolset for OCPP & V2G Implementation

We leveraged a modern architecture to ensure reliable communication, grid stability, and seamless expansions.

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Azure & DevOps

• Cloud-based hosting for OCPP server
• CI/CD pipelines for rapid releases
• Secure environment with high availability

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Java & Spring Boot

• Java and Spring Boot for OCPP logic, data processing, V2G control
• Flexible structure for custom charger instructions

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PostgreSQL & Message Queues

• Storing energy transfer stats
• Message-based architecture for real-time updates
• Reliable system performance across multiple sites

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Security & Compliance

• RFID-based authentication
• Encrypted communications to protect charging data
• Adherence to H2020 project guidelines

RESULTS & FINAL OUTCOMES

Verified V2G, Scalable Infrastructure, and Faster Development

Verified Charger Compatibility: Successful integration of V2G (Chademo) and precise discharge control for grid stability.
Scalable Infrastructure: Built a future-proof OCPP server ready for expansions, additional chargers, and evolving project requirements.
Simplified Authorization & Reporting: Streamlined user access using RFID tokens.
Faster Implementation: Leveraged Codibly’s OCPP accelerator, reducing time-to-market for pilot demo sites.
Detailed Reporting: Provided energy transfer statistics and dynamic charging profiles for compliance and performance insights.

These achievements enabled IMP PAN to meet the goals of H2020 Serene, Sustenance, and V4Grid, positioning the organization for further research and commercial expansions in EV charging and V2G solutions.

Client Testimonial

What Our Partner Says

“Partnering with Codibly has been instrumental in bringing our EV charging projects to life. Their technical expertise, particularly with OCPP protocol integration and V2G functionality, played a key role in ensuring seamless communication between our chargers and Energy Management System. Their ability to handle complex challenges and deliver a robust, scalable solution was exactly what we needed to support our long-term vision. The result is a future-ready infrastructure that sets us up for continued success.”