Go library for talking to Powerwall devices (tested on 3, likely works on 2 as well).
Requires network access to the Powerwall's private IP, aka 192.168.91.1. Note that as of ~2025, you must appear to be on the 192.168.91.x subnet for this to work (otherwise you'll get permission denied errors, even with the correct password).
You can create a powerwall.TEDApi and call queries directly, or use the powerwall.SimpleStatus helper.
func main() {
api := powerwall.TEDApi{Secret: "..."}
// do raw query
raw, err := api.Query(context.TODO(), powerwall.QueryStatus)
// ...do something with raw JSON
// or this helper
status, err := powerwall.GetSimpleStatus(context.TODO(), api)
// ...
}You need access to the Powerwall's private IP/network for calls to succeed.
One way to do this is put a device like a rasberry PI on your Ethernet network, and have it join the Powerwall's WiFi, and do your calls there.
I use my router to connect to the Powerwall, rather than a smart intermediary device. I use Unifi hardware, which makes this pretty easy.
- I have a VLAN (with ID 91, just for convenience) just for the Powerwall
- A port on that VLAN has a WiFi dongle that is a dumb client joining to the Powerwall's internal WiFi ("TeslaPW_xxxxx")
- There's a rule under "Network > Settings > Policy Engine > Policy Table" that looks like this: basically, make all traffic to 192.168.91.x look like it comes from the router
With that, the Powerwall thinks we're connecting from the right subnet.
The TP-Link dongle isn't that good and occasionally crashes. In my house, it's powered by PoE (PoE => microUSB adaptor) and it can be restarted via the Unifi console or its API.
This project uses the proto files from pypowerwall. Their LICENSE file is inside third_party/.
In case you asked, I just don't like Python. It's a good learning language but an absolute pain to use in any real-world situation.