snippet of evcc.yaml for integration an inverter via HA REST API

gistfile1.txt

  - name: my_grid
    type: custom
    power:
      source: http
      uri: http://homeassistant.local:8123/api/states/sensor.sofar_haus_grid_power
      method: GET
      headers:
        - Authorization: Bearer <token>
      insecure: true
      jq: .state|tonumber*(-1)
      timeout: 2s

  - name: my_pv
    type: custom
    power:
      source: http
      uri: http://homeassistant.local:8123/api/states/sensor.total_power_generation
      method: GET
      headers:
        - Authorization: Bearer <token>
      insecure: true
      jq: .state|tonumber
      timeout: 2s

  - name: my_battery
    type: custom
    power:
      source: http
      uri: http://homeassistant.local:8123/api/states/sensor.sofar_haus_battery_power
      method: GET
      headers:
        - Authorization: Bearer <token>
      insecure: true
      jq: .state|tonumber*(-1)
      timeout: 2s
    soc:
      source: http
      uri: http://homeassistant.local:8123/api/states/sensor.sofar_haus_battery
      method: GET
      headers:
        - Authorization: Bearer <token>
      insecure: true
      jq: .state|tonumber
      timeout: 2s