This project creates a bridge between OCPP (Open Charge Point Protocol) and Tesla Wall Connector (TWC) protocol. It simulates a TWC while acting as an OCPP server.

This bridge is specifically designed to work with EVCC (Electric Vehicle Charge Controller) to simulate a Tesla Wall Connector. This enables EVCC to directly control Tesla vehicles without requiring TWC hardware, allowing for fine-grained current control down to 1 Ampere using the Tesla API.

Note: It's recommended to use TeslaBleHttpProxy alongside this project to avoid hitting Tesla Fleet API rate limits.

I'm using it with the Fronius Wattpilot.

This project is primarily AI-generated code, developed with the assistance of GitHub Copilot Edits and Claude 3.5 Sonnet.

poetry install

poetry run python -m ocpp2twc

The server will start on ws://0.0.0.0:9000 and accept OCPP 1.6 connections.

Create a docker-compose.yml:

version: '3'
services:
  ocpp2twc:
    image: ghcr.io/jabe/ocpp2twc:main
    ports:
      - "9000:9000"
      - "80:8080"
    restart: unless-stopped

1. Install the Python extension for VSCode
2. Open the project in VSCode
3. Run poetry install in the terminal
4. Select the Python interpreter:
   • Press Cmd+Shift+P (Mac) or Ctrl+Shift+P (Windows/Linux)
   • Type "Python: Select Interpreter"
   • Choose the interpreter from .venv folder

To run the server:

• Press F5 or
• Use the Run and Debug sidebar (Cmd+Shift+D) and click the green play button

MIT