Grizzl-E EV Home Assistant Integration

A Home Assistant integration for Grizzl-E EVSEs (Electric Vehicle Supply Equipment, or charger), providing sensors for monitoring the WiFi Grizzl-E EVSEs.

This integration works with most WiFi enabled Grizzl-E chargers (the Connect and Ultimate lines) but does not work with chargers enrolled in the "Grizzl-E Club" or comercial chargers.

This integration is not affiliated with United s or Grizzl-E (but is also made in Ontario, Canada). Please consult United 's User Manuals can learn more about operating Grizzl-E EVSE.

⚠️ Security Note

Did you know that your United Chargers Grizzl-E WiFi enabled EVSE has a web interface that is by default unauthenticated? If you haven't visited the Grizzl-E web interface, referred to in the user manuals as Page Access, and set a password, you should do that right away. This integration assumes a username and password has been set.

Even once a username and password is set, users should ensure that thier EVSE is properly secured on their network from the rest of the internet.

Features

This integration provides the following features:

• Real-time monitoring of charging status and metrics
• Support for multiple Grizzl-E models
• Configurable polling interval
• Temperature monitoring
• Energy usage tracking

Installation

HACS (Recommended)

1. Make sure HACS is installed and working
2. Go to HACS → Integrations
3. Click the three dots in the top right corner
4. Select "Custom repositories"
5. Add this repository URL: https://github.com/mclare/grizzl_e-for-HA
6. Select category: "Integration"
7. Click "Add"
8. Find "Grizzl-E EV " in the list and click "Install"
9. Restart Home Assistant
10. Go to Settings > Devices & Services
11. Click "+ Add Integration" and search for "Grizzl-E EV "
12. Follow the setup wizard to configure your

Manual Installation

1. Download the latest release from the Releases page
2. Extract the grizzle_e folder from the archive
3. Copy the grizzle_e folder to your custom_components directory in your Home Assistant config
4. Restart Home Assistant
5. Go to Settings > Devices & Services
6. Click "+ Add Integration" and search for "Grizzl-E EV "
7. Follow the setup wizard to configure your

Configuration

Configuration via UI

1. Go to Settings > Devices & Services
2. Click "+ Add Integration"
3. Search for "Grizzl-E EV "
4. Enter your 's IP address or hostname
5. Enter the username and password (default is usually admin/admin)

Configuration via YAML

# Example configuration.yaml entry
grizzle_e:
  host: YOUR_EVSE_IP_ADDRESS
  username: admin
  password: yourpassword
  scan_interval: 30  # Optional, in seconds

Available Sensors

• Current: Current charging current (A)
• Voltage: Line voltage (V)
• Power: Current power draw (W)
• Session Energy: Energy used in current session (kWh)
• Total Energy: Total energy used (kWh)
• Temperature 1/2: Temperature sensors (°C)
• State: state (Ready/Connected/Charging)
• Pilot State: EV connection status
• RSSI: WiFi signal strength (dBm)

Troubleshooting: Verify EVSE Connectivity Outside of Home Assistant

If the integration fails, and the integreation is running in Home Assistant, but cannot connect to the Grizzl-E EVSE, first verify that you can access your Grizzl-E EVSE over the network without Home Assistant involved.

This check helps confirm that your network, credentials, and the EVSE are working correctly before adding any Home Assistant complexity.

---

What you need

You will need:

• The IP address of your Grizzl-E EVSE
• The username
• The password
• Your computer and EVSE on the same network or the firewall rules to allow access

---

Testing Connectivity

Step 1: Verify Web Interface Access

Verify that you can access the Grizzl-E EVSE's web interface with your regular web browser. The bottom of the page will show the EVSE Version, WiFi Version and Serial Number.

Step 2, option 1: Command line (macOS and Linux)

If you are comfortable using a terminal, you can test connectivity using curl, replacing <username>, <password>, and <EVSE_IP> with your actual values.

curl -sS -X POST -H 'Authorization: Basic '"$(printf %s '<username>:<password>' | base64)" http://<EVSE_IP>/main

There is also a way to do this with Windows PowerShell, but if you know how to initiate a network request like this in PowerShell, you know how to adapt a curl command.

Step 2, option 2: Using a graphical tool

If you are not comfortable using the command line, you can use a graphical HTTP client such as:

• Postman (Windows, macOS, Linux)
• Insomnia

Request details

• Method: POST

• URL: http://<EVSE_IP>/main

• Body: (empty)

• Authentication:

• Type: Basic Authentication

• Username: your EVSE username

• Password: your EVSE password

• Headers:

• No custom headers are required when using Basic Auth (the tool will add them automatically)

Expected result

If the request is successful, the EVSE will return a JSON response containing status information.

If you see JSON data, your IP address, username, and password are correct.

Contributing

Contributions are welcome! Please feel free to submit issues and pull requests. Between me and AI code assistance, there's very little intelligence currently working on this.

License

This project is licensed under the MIT License - see the LICENSE file for details.