OCPP integration is the process of connecting an EV charger (or a fleet of chargers) to a charging management system (CPMS) using OCPP so the chargers can be monitored, controlled, configured, and maintained remotely. It covers both the technical connection (networking, certificates, endpoint configuration) and the operational setup (commissioning, testing, monitoring, and support processes).
What OCPP integration enables
A successful OCPP integration typically enables:
– Real-time charger status monitoring (available/charging/faulted/offline)
– Remote start/stop and session control
– User authentication (RFID, app authorization, whitelists)
– Meter value reporting (kWh, power, voltage, current)
– Smart charging control (power limits, profiles, schedules)
– Configuration management (set parameters, retrieve settings)
– Diagnostics (logs, error codes, event reporting)
– Firmware and configuration updates (capability depends on OCPP version and vendor)
Key steps in an OCPP integration
OCPP integration is usually done in a structured workflow:
Connectivity and endpoint setup
– Define how chargers reach the CPMS (Ethernet, Wi-Fi, LTE)
– Configure the CPMS URL (WebSocket/SOAP endpoint) and charger identity
– Ensure firewall/NAT rules allow outbound connections to CPMS
– Verify time synchronization (NTP) to prevent session timestamp issues
Security configuration
– Use encrypted transport (TLS) wherever possible
– Provision credentials/certificates and manage rotation (especially for OCPP 2.0.1)
– Apply network segmentation so chargers are isolated from office/guest networks
– Enforce RBAC and MFA for CPMS users who can change configs or run remote commands
Functional commissioning and testing
– Validate status transitions, connector locking, and remote commands
– Test authorization flows (RFID/app/whitelist) and edge cases (offline start rules)
– Verify metering accuracy and reporting intervals
– Test smart charging limits and site demand constraints
– Confirm fault reporting, alarms, and recovery behavior after power/network loss
Operational readiness
– Configure monitoring access, alerts, and escalation paths
– Document the site setup (IDs, SIMs, IPs, firmware versions, wiring diagrams)
– Define maintenance SLAs and spare parts strategy
– Establish change control for firmware and configuration updates
Common integration challenges
– Unstable connectivity (poor LTE coverage, wrong APN, firewall blocks) causing offline chargers
– Mismatched charger IDs or incorrect endpoint URLs preventing registration
– Partial OCPP feature support (“OCPP compliant” but missing critical messages)
– Meter value schema differences impacting billing and reporting
– Time sync issues causing reconciliation problems and false alarms
– Security shortcuts during commissioning that remain in production
Best practices
– Standardize commissioning checklists and acceptance tests across sites
– Monitor network KPIs (online rate, session success rate, reconnect frequency)
– Use version-controlled configuration templates per charger model
– Keep firmware and CPMS releases managed under a secure update process
– Segment networks and restrict admin access to minimize cyber risk
Related glossary terms
OCPP
OCPP 1.6
OCPP 2.0.1
CPMS
Smart charging
Load management
Monitoring access
Uptime
TLS encryption
Network segmentation