S0tool is a versatile tool for monitoring water and energy consumption. It works seamlessly with ESPHome and offers various features. With the S0tool you can keep track of the consumption of both your water meter and a kWh meter that has an S0 connection.

The tool is ideal for keeping track of the consumption of devices such as heat pumps, or the yield of your solar panels. A suitable kWh meter with an S0 connection must be installed for this.

S0tool transforms a *(not so smart)* kwh meter with a s0 port into a smart meter, reading the pulse from the S0 port that is always present in most cases and it works with ESPHome and with Home Assistant

And has a official Made for ESPHome license