rtlamr2mqtt VS EmonLib

Using this project to get my Gas meter reading into Home Assistant (and indirectly into InfluxDB)

If you have a meter that reports gas usage via wireless you can use a software defined radio to pull in all the data using rtlamr2mqtt addon https://github.com/allangood/rtlamr2mqtt

I used https://github.com/allangood/rtlamr2mqtt to actually read the data off the wire and put it into MQTT. Homeassistant then reads from MQTT.

This is correct. As someone who currently monitors my meter in real-time using rtlamr2mqtt, I can vouch for the benefits of knowing your energy usage in real-time. I had a rooftop solar array installed recently, and I use real-time monitoring to see whether I’m generating excess energy, which helps me know when the best time is to run my clothes dryer or charge my car. It absolutely helps people make better choices around their energy usage, and I think it’s something everyone would benefit from if it was more easily accessible.

My first use case is energy monitoring, pulling in electric meter readings using rtlamr2mqtt, which I already have going with Mosquitto. I also have my OpenEVSE publishing MQTT, and tried out HA's SolarEdge API integration. It sounds like OpenHAB's MQTT integration should be easy, but I'm uncertain how I'll see the data.

Absolutely! I'm using a Nooelec NESDR Mini as a Software Defined Radio connected to a raspberry pi that's running a program called RTLAMR, which will pickup all the Automated Meter Reader signals in the area. There's some research you'll have to do to find your meter ID, manufacturer, and protocol, but once you have it narrowed down to your meter you can publish the entries to an MQTT instance using rtlamr2mqtt, where Home Assistant can pick it up and use it to track your total energy consumption.

I've heard that this works well with the meter NS Power uses: https://github.com/allangood/rtlamr2mqtt

I also use the Open Energy Monitor project. https://openenergymonitor.org/

I knew https://openenergymonitor.org/ a year ago. Maybe It is your interest

You may take a look at https://openenergymonitor.org.

https://openenergymonitor.org/ would be a good place to start, it's a mature project where the hard work is done.

You'll probably find the resources available on the OpenEnergyMonitor website quite useful, specifically their documentation on electricity monitoring. That covers theory, how to perform the required maths on an Arduino, and how to select the correct sensors etc.

Here's the one I use, good combination of hackable and user friendly, although it took a bit of research to understand what kit and add-ons I needed cause it's got a good number of possible confegurations: https://openenergymonitor.org/

I use Open Energy Monitor gear at home to monitor my (wholesale) power price and solar generation. They have off-the-shelf gear for EV chargers where the feed wattage is controlled. All you would need is a billing aspect.

You can also look at https://openenergymonitor.org/ . The unit that goes in the electrical box is ESP8266-based, so if you don't want to use their software you might be able to get it running in esphome.

Lots of ways. Sense.io. a few open source ones, iotawatt.com. Haven’t looked at this one too much https://openenergymonitor.org