SMA Sunny Island (Modbus)

Supported features

Battery control: External control of home battery charging and discharging via evcc.

Usage areas

Battery

Parameters

Name	Description	Value	Level
`id`	Modbus ID Default: `1`	int	required
`host`	IP address or hostname Example: `192.0.2.2`		required
`port`	Port Default: `502`	int	required
`maxchargepower` [W]	Maximum charge power Highest power the battery system can charge with. The optimizer plans with charging up to this power. Some devices also use it as grid charging power. Default: `4200`		optional
`capacity` [kWh]	Battery capacity Example: `50`		optional
`minsoc` [%]	Minimum charge Lower limit as configured on the battery system. Used by optimizer. Default: `0` Example: `25`		optional
`maxsoc` [%]	Maximum charge Upper limit as configured on the battery system. Used by optimizer and, on some devices, for grid charging. Default: `100` Example: `95`		optional
`maxdischargepower` [W]	Maximum discharge power Highest power the battery system can discharge with. The optimizer plans with discharging up to this power. Smart mode assumes the battery supplies at most this power to vehicle charging.		advanced
`watchdog`	Watchdog Default: `60s`		advanced

Configuration example for evcc.yaml

If you don't want to configure via the UI, you can alternatively use this YAML block.

meters:
    - name: my_battery
      type: template
      template: sma-si-modbus
      usage: battery

      # Modbus TCP
      modbus: tcpip
      id: 3
      host:  # Hostname
      port: 502 # Port
      maxchargepower: 4200 # Maximum charge power (W), Highest power the battery system can charge with. The optimizer plans with charging up to this power. Some devices also use it as grid charging power.
      capacity: 50 # Battery capacity (kWh), optional
      minsoc: 0 # Minimum charge (%), Lower limit as configured on the battery system. Used by optimizer. (optional)
      maxsoc: 100 # Maximum charge (%), Upper limit as configured on the battery system. Used by optimizer and, on some devices, for grid charging. (optional)
      maxdischargepower: # Maximum discharge power (W), Highest power the battery system can discharge with. The optimizer plans with discharging up to this power. Smart mode assumes the battery supplies at most this power to vehicle charging. (optional)
      watchdog: 60s # Watchdog, optional