Field provisioning is the process of configuring and onboarding an EV charger on site after installation so it can operate correctly within the local electrical environment and connect to the operator’s backend systems. It typically includes setting site-specific power limits, load management parameters, network configuration, security credentials enrollment, and functional validation before go-live.
What Is Field Provisioning?
Field provisioning finalizes a charger’s setup in its real deployment conditions.
– Apply site-specific configuration (power limits, phases, connector naming, tariffs placeholders)
– Configure connectivity (Ethernet/cellular, firewall rules, APN, DNS, NTP)
– Enroll or activate security credentials (certificates, tokens) for CPMS communication
– Bind the physical asset to the backend record (correct serial/device ID mapping)
– Validate core functions: status reporting, authorization, start/stop, metering values, logs
– Record commissioning evidence for documentation and warranty baseline
Field provisioning complements factory provisioning: factory sets the secure baseline, field sets the local specifics.
Why Field Provisioning Matters for EV Charging
– Ensures the charger matches local electrical constraints and protection strategy
– Prevents site overload by setting correct max current and load management caps
– Enables reliable CPMS connectivity and remote operations through real networks
– Reduces failed sessions caused by misconfigured authentication or connector IDs
– Improves uptime by validating alarms, diagnostics, and recovery behavior at go-live
– Supports compliance and audit needs with commissioning records and configuration snapshots
Typical Steps in Field Provisioning
1) Physical and Electrical Validation
– Confirm correct wiring, phases, and earthing/bonding integrity
– Verify protection devices and safety functions behave as expected
– Check enclosure integrity and any site-specific accessories (bollards, signage, labeling)
– Ensure connector reach and bay layout match intended use
2) Network and Connectivity Setup
– Configure Ethernet or cellular router settings (APN, IP, DNS, firewall)
– Validate signal strength and stability for cellular sites
– Confirm outbound access to CPMS endpoints and required ports
– Set time synchronization (NTP) to ensure reliable logs and receipts
– Verify secure communication (TLS) and device authentication
3) Backend Onboarding to CPMS
– Register or confirm charger record in CPMS (device ID, model, connectors)
– Assign charger to correct site group and operator account
– Push configuration profiles: availability settings, local rules, message intervals
– Validate OCPP behavior: heartbeat, status notifications, remote commands
4) Site-Specific Charging Configuration
– Set maximum current/power limits aligned with feeder capacity and site import constraints
– Configure dynamic load balancing inputs (CT mapping, site limit, priority rules)
– Define user access rules: public vs private, RFID lists, fleet groups
– Configure tariff and pricing logic (where relevant) and receipt settings
– Enable notifications and support contact routing (where applicable)
5) Functional Testing and Go-Live Checks
– Local start/stop test and remote start/stop test
– Authentication test (RFID/app/roaming where applicable)
– Metering sanity check (kWh increases logically, timestamps correct)
– Fault simulation checks where safe and defined (door open, emergency stop, thermal derate behavior)
– Confirm charger shows “Available” and appears correctly in operator monitoring tools
– Capture commissioning documentation: photos, test results, configuration snapshot
Field Provisioning vs Commissioning
These are related but not identical.
– Commissioning focuses on verifying correct electrical installation, safety tests, and compliance evidence
– Field provisioning focuses on configuration and system onboarding (network, CPMS, parameters)
In practice, they are often performed together during go-live.
Best Practices
– Use standardized provisioning checklists per market and site type
– Automate configuration via CPMS profiles to reduce human error
– Keep consistent naming conventions for device IDs and connector IDs
– Record configuration snapshots and firmware versions for support traceability
– Validate time sync and logs early—many troubleshooting issues start with wrong timestamps
– Ensure a clear ownership model: installer vs operator vs OEM for each provisioning step
Common Mistakes to Avoid
– Incorrect connector ID mapping between charger label and CPMS record
– Leaving default passwords or shared credentials in field
– Missing firewall rules or blocked ports causing intermittent CPMS connectivity
– Not setting site power caps, leading to overload trips and downtime
– Skipping end-to-end session tests (authorization → charging → stop → receipt/log)
– No documentation, making future troubleshooting slow and dispute-prone
Limitations to Consider
– Site networks vary widely; corporate IT policies can delay provisioning
– Some issues only appear under real vehicle behavior and peak usage conditions
– Roaming and payment integrations may require additional end-to-end testing
– Field provisioning cannot compensate for poor electrical installation quality
– Credential lifecycle management adds ongoing operational responsibilities
Related Glossary Terms
Factory Provisioning
Device Provisioning
Device Certificate Enrollment
OCPP
Electrical Commissioning
Dynamic Load Balancing
Charging Uptime
Charger Diagnostics