Yes, a new device has to be added for this.
I’m currently working on further improvements in the evcs structure, to make it a little bit easier to implement it. But there are not that many changes in the OCPP structure, as it is already generalized a lot. The important features like setting the charge power needs to be adopted to your charger openems/IesKeywattSingleCcs.java at 9585a222e6fda87c60452b4c0f1b2ae273d9eec6 · OpenEMS/openems · GitHub