Reviewed against official sources: August 2026
Released in 2025, OCPP 2.1 builds on OCPP 2.0.1 with bidirectional charging, DER control, smarter charging and expanded transaction options.
What does OCPP standardize?
OCPP is an open interface between a charging station and its charging-management system. It is intended to support interoperability, scale and less dependence on proprietary operating platforms.
Open Charge Alliance states that OCPP 2.1 builds on and preserves OCPP 2.0.1 application logic while adding ISO 15118-20 support, bidirectional charging, distributed-energy-resource control and more advanced smart-charging tools.
How should a migration decision be made?
Protocol version alone is not a selection criterion. CSMS capability, device model, offline scenarios, firmware-update strategy, security and market needs should sit together in a compatibility matrix.
- For an installed fleet, define version coexistence and rollback testing.
- Align smart-charging profiles with actual site-connection constraints.
- Separate protocol implementation from claims of certification or product compatibility.
Official sources
This article is general guidance, not a substitute for the full standard, conformity testing, project-specific engineering or target-market legal requirements. It makes no IFA product certification or compliance claim.