Python - P1 Monitor API Client

Asynchronous Python client for the P1 Monitor API.


There are many ways to read the serial port (P1) of your smart meter and what you do with the data that comes out. With this python library your platform can read P1 Monitor via the API and use the data for example for an integration in Home Assistant.


pip install p1monitor


import asyncio

from p1monitor import P1Monitor

async def main():
    """Show example on getting P1 Monitor data."""
    async with P1Monitor(host="example_host") as client:
        smartmeter = await client.smartmeter()

if __name__ == "__main__":
    loop = asyncio.get_event_loop()


There is a lot of data that you can read via the API:


  • Gas Consumption
  • Power Consumption / Production
  • Energy Consumption Low/High
  • Energy Production Low/High
  • Energy Tariff Period


  • Voltage phases L1/2/3
  • Current Phases L1/2/3
  • Power consumed phases L1/2/3
  • Power Produced phases L1/2/3


  • Gas Consumption Price
  • Energy Consumption Price Low/High
  • Energy Production Price Low/High

Setting up development environment

This Python project is fully managed using the Poetry dependency
manager. But also relies on the use of NodeJS for certain checks during

You need at least:

To install all packages, including all development requirements:

poetry install

As this repository uses the pre-commit framework, all changes
are linted and tested with each commit. You can run all checks and tests
manually, using the following command:

poetry run pre-commit run --all-files

To run just the Python tests:

poetry run pytest


MIT License

Copyright (c) 2021 Klaas Schoute

GitHub - klaasnicolaas/python-p1monitor: ?️ Asynchronous Python client for the P1 Monitor
?️ Asynchronous Python client for the P1 Monitor. Contribute to klaasnicolaas/python-p1monitor development by creating an account on GitHub.