Netzero provides access to diagnostic data for your Powerwall 2 system. This data is not available in the Tesla app. The diagnostic data includes battery capacity and degradation, and solar string production (solar production broken down by strings of solar panels) for Tesla-branded inverters.
Note: Tesla Gateway 1 owners need to configure a password before diagnostics can be accessed.
Powerwall 2 diagnostics access requires the IP address and password for the Tesla Gateway or Powerwall+.
The IP address is usually pre-populated in Netzero, but if not, it should be listed with your other home network devices at your Wi-Fi access point or home router.
The default password consists of the last five characters (letters or numbers) of the Gateway password, which is printed on a label behind the Gateway door or Powerwall+ cover. For Tesla Gateway 2 systems, the label will say “Password” and the full password is ten characters, of which you will only use the last five (note: this label is different from the label that contains the part number and serial number). For Tesla Gateway 1 systems, see the section below for configuring a password. For details, see Tesla’s documentation on Connecting to Tesla Gateway and Powerwall+ .
Once you have the IP address and password, enter them in Netzero (Monitoring > Connect). Netzero will connect to the Gateway, collect diagnostic data, and display it in the Powerwall and Strings tabs.
Note: on iOS, Netzero will ask for permission to connect to the Local Network. The permission needs to be granted for the connection to succeed. If you rejected the permission, you can re-enable it from your device’s Settings menu: Settings > Apps > Netzero > Local Network.
Optionally, you may also scan the QR code behind the Gateway door. This will automatically retrieve the correct IP address and password, and can additionally get string diagnostics for all Powerwall+ inverters. However, it requires connecting to the built-in Wi-Fi network, which means standing next to the gateway and is less reliable.
Note: Diagnostics access is only available from a mobile device (iPhone or Android). Due to web browser security restrictions, it is not available from the web app.
Like all lithium-ion batteries, Powerwall loses capacity over time. Netzero allows you to track the degradation over time. Refer to the Tesla documentation for warranty details on Powerwall 2.
If you have a Powerwall+, you will also get string-level data: current, voltage, and power for each string of arrays connected to your inverter. This can be useful for investigating production issues and finding issues with individual strings of solar panels.
Note: due to a Tesla limitation, only data for the first Powerwall+ inverter is available.
See Diagnosing Solar Production Issues for help with interpreting string-level data.
To access diagnostics with a Tesla Gateway 1, a password must be configured first. This requires installing the Tesla One app (iOS, Android). Download the Tesla One app and sign in as an External Partner using your Tesla credentials. Then tap on More in the bottom right and Tesla Device Setup. Tap Manually Enter and provide the details:
Once the Tesla One app connects to the device, tap on the gateway and go to Settings > Advanced settings > Legacy password. Choose and store a password. This is the password you will use in Netzero to connect to your gateway: Monitoring > Connect.
Accessing devices directly through your home network is not common and can run into issues. Additionally, Gateway firmware updates sometimes cause access issues.
Two of the most common types of issues when connecting to the Gateway are connectivity issues and authentication issues. Look at the error message displayed in Netzero to determine the type of issue:
Failed to connect error.Failed to authenticate error.To be able to connect to the Gateway, you must:
Be on the same home network as the Gateway. This generally means being on the same Wi-Fi network as the Gateway. You can confirm the name of the Gateway Wi-Fi network on the Monitoring > Powerwall screen (scroll down to the Network section). For your phone or tablet, confirm the Wi-Fi network in Settings > Wi-Fi. Note: if your Gateway is hardwired with Ethernet, it will need to be accessible from your Wi-Fi network.
Check permissions on your phone: device Settings > Apps > Netzero. Permissions will vary between iOS and Android, but the required ones are: Location (location is not used by Netzero, but Wi-Fi access requires this permission), Local Network / Nearby devices, and Camera (when using QR codes).
Have the correct IP address of the Gateway. Netzero usually prefills the IP address with the correct value. You can confirm the IP address using your home network router: look for device names like Tesla Powerwall, LG Innotek, or a serial number such as 1232100-10-E--CN32132....
One way to confirm connectivity independent of Netzero is to open the Gateway web address in a web browser. Using the same device and Wi-Fi network used for Netzero, open a web browser and navigate to https://192.168.1.10 (replace this IP address with your Gateway’s IP address). If the page loads, you will see a security error, which you can dismiss. If the page doesn’t load or keeps spinning, there’s a connectivity issue and you should try the solutions below.
If you’ve confirmed all the steps above and are still having connection issues, try the following steps:
Authentication issues mean the Gateway is accessible, but the password is incorrect. Confirm you have the correct password: