Some homes are connected to gas. Gas is being used to heat water, cook and heat up the home.
Home Assistant allows you to track your gas usage and easily compare it against your energy usage for the same period of time.
Home Assistant will need to know the amount of gas that is being consumed.
The best way to get this data is directly from your gas meter that sits between your house and the grid. In certain countries these meters contain standardized ways of reading out the information locally or provide this information via the electricity meter.
The P1 port is a standardized port on electricity meters in the Netherlands, Belgium and Luxembourg which also provides gas consumption information. A P1 reader can connect to this port and receive real-time information.
We have worked with creator Marcel Zuidwijk to develop SlimmeLezer+. It’s an affordable P1 reader powered by ESPHome that will seamlessly integrate this information in Home Assistant. It is being sold on his website and the firmware is open source on GitHub.
AI-on-the-edge-device is a project running on an ESP32-CAM and can be fully integrated into Home Assistant using the Home Assistant Discovery Functionality of MQTT. It digitalizes your gas/water/electricity meter display and provides its data in various ways.
Diaphragm gas meters are the most common type of gas meter, and their movement can frequently be observed with a magnetometer. The QMC5883L is a common and inexpensive option that ESPHome supports. Many posts on the forums of users having luck with this method, such as this one.