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SAJ Solar Inverter

The SAJ Solar Inverter integrationIntegrations connect and integrate Home Assistant with your devices, services, and more. [Learn more] will poll a SAJ solar inverter and present the values as sensors in Home Assistant.

This sensor uses the web interface and to use it, you have to be able to connect to the solar inverter from your favorite web browser. Not all inverters appear to support the local interface.

There is a difference between inverters that are connected via an Ethernet module and those connected via a Wi-Fi module. The Wi-Fi module requires a username and password for authentication where the Ethernet module does not.

Configuration

Configuration

To add the SAJ Solar Inverter hub to your Home Assistant instance, use this My button:

Manual configuration steps

If the above My button doesn’t work, you can also perform the following steps manually:

  • Browse to your Home Assistant instance.

  • Go to Settings > Devices & services.

  • In the bottom right corner, select the Add Integration button.

  • From the list, select SAJ Solar Inverter.

  • Follow the instructions on screen to complete the setup.

host

The IP address of the SAJ Solar Inverter.

type

Type of connection module: ‘ethernet’ or ‘wifi’. Default: ‘ethernet’.

username

Username for logging in to SAJ Solar Inverter (only used when type is ‘wifi’ but can be skipped if the inverter still has the default credentials, which may be empty).

password

Password for logging in to SAJ Solar Inverter (only used when type is ‘wifi’ but can be skipped if the inverter still has the default credentials, which may be empty).

During setup, you will be prompted to select the connection type (Ethernet or Wi-Fi) and provide the necessary information. Wi-Fi connections may require username and password.

Sensors

Energy sensors

The integration provides the following energy-related sensors:

name Unit Description
current_power W Current power generated by the inverter.
today_yield kWh Power yield for today.
today_time h Inverter’s running time for today.
today_max_current W Maximum current power for today. (only for connection via ethernet module)
total_yield kWh Total kWh generated to date.
total_time h Total running time of the inverter.
total_co2_reduced kg Total CO2 in kg reduced.
temperature °C Temperature of the inverter.
state N/A Live state of the inverter.

Diagnostic sensors

The integration also provides diagnostic sensors that help you understand and troubleshoot the connection to your inverter.

The diagnostic sensors are:

  • Inverter IP address

    • Unit: None
    • Description: Shows the IP address that Home Assistant currently uses to connect to the inverter, which is useful when your router assigns dynamic IP addresses

  • Connection type

    • Unit: None
    • Description: Indicates whether the integration is using the Ethernet module or the Wi-Fi module to communicate with the inverter

  • Serial number

    • Unit: None
    • Description: Displays the inverter serial number as reported by the device, which can help you match the device in Home Assistant with labels on the physical inverter or with entries in the SAJ web interface

Troubleshooting

This integration does not support automatic discovery. Set it up manually by entering the inverter IP address or hostname.

For Wi-Fi connections, ensure you’re using the correct credentials.

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