You should be able to get the Gateway to connect to your wi-fi network by using the wi-fi network on the Gateway and setting up the network configuration:
Monitoring from your Home Network | Tesla
I tried what Tesla recommended, but found that my installation (3 weeks old) varied from what Tesla has published.
Connecting to the Gateway
If your system is already connected to your home network with a wireless or a wired connection, you can navigate to the Powerwall Wizard landing page from a standard web browser.
- Launch a browser using any device connected to your home network.
- Enter https://teg-xxx, where xxx is the last 3 digits of the Gateway serial number.
*********
My Gateway wasn't responding to teg-xxx. So I found it's IP address and attempted to connect using Chrome with
https://192.168.XXX.XXX.
Chrome would not connect, because the security certificate was teg.
The fix for my Windows 7 and 10 devices was to edit the HOST file in C:/windows/system32/drivers/etc to add the following line, with XXX representing your actual gateway ip address.
192.168.XXX.XXX teg #Tesla Energy Gateway
Now, I simply type https:teg at any browser and the gateway comes up with no certificate errors.
**********
If your system is not connected to your home network, you can connect to the Wi-Fi network hosted by the Gateway.
1. Using a Wi-Fi capable computer, tablet, or phone, connect to the Gateway Wi-Fi network, which appears as “TEG-xxx,” where xxx is the last 3 digits of the Gateway serial number.
2. Wi-Fi Password: Enter the full serial number of the Gateway:
- If the serial number starts with an “S,” enter the full serial number of the Gateway as it appears on the serial number sticker (without parentheses or colon).
- If the serial number does not start with an “S,” enter an uppercase “S” and follow with the full serial number of the Gateway as it appears on the serial number sticker.