Protocol C was launched in 2025 to help consolidate and simplify the resources and materials for understanding the protocols involved in the charging of electric vehicles.
Protocols in EV charging are many and confusingly named (OCPP, OCPI, OICP, OPCP for a start). They are mostly maintained by separate entities, meaning documents, support, and implementation guides are dispersed and difficult to find. Our aim is to consolidate the diverse protocol knowledge and resources, becoming the go to resource for anyone wanting to implement or just understand protocols used in the EV charging ecosystem.
This site was built as a small contribution to the advancement of EV charging technology and as a favour to the environment. It is and will remain free for all, if you've found it helpful and would like to contribute to the hosting costs you can donate here, thanks!
Please do get in contact if you have any questions or ideas.