Integration with evcc#

evcc.io is software for intelligent electric vehicle charging. GbbOptimizer can communicate with it via MQTT to coordinate EV charging with home battery optimization.

Requirements#

A working evcc installation
Local MQTT broker (Mosquitto in Home Assistant or standalone)
Configured Mosquitto Bridge

Bridge Configuration#

In the Mosquitto configuration file (/share/mosquitto/GbbOptimizer.conf) add topic lines for evcc:

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connection GbbOptimizer_<PlantId>
remote_username <PlantId>
remote_password <PlantToken>
address <mqtt-server-address>:8883
bridge_capath /etc/ssl/certs
topic # both 2 evcc/loadpoints/ <PlantId>/evcc/site/loadpoints/

MQTT Topics#

Data from evcc (evcc -> GbbOptimizer)#

Topic	Description
`{PlantId}/evcc/site/statistic/total/chargedKWh`	Total energy charged to EV (kWh)

Commands from GbbOptimizer (GbbOptimizer -> evcc)#

Topic	Payload	Description
`{PlantId}/evcc/loadpoints/{chargerId}/mode`	`off` or `now`	Enable/disable charging
`{PlantId}/evcc/loadpoints/{chargerId}/maxCurrent`	number (A)	Maximum charging current
`{PlantId}/evcc/loadpoints/{chargerId}/connected`	`true`/`false`	Charger connection status

Where {chargerId} is the charging point identifier in evcc.

evcc must be configured to communicate via MQTT. Check the evcc documentation in the MQTT section.