For people in The Netherlands: all Smart Meters that the net maintainers installed (are required to) support the P1 standard, which provides a standardized interface for customers to read out current current draw, cumulative power use, etc. Usually gas is hooked as well.
You can hook up a cheap dongle to expose the stats in an app. For instance, we use:
This meter also exposes an API on the local network. I have written a small driver for the SmartThings Hub, so that you can get the stats/graphs in the SmartThings app as well (we use a SmartThings hub for Zigbee/Z-Wave devices):
You can hook up a cheap dongle to expose the stats in an app. For instance, we use:
https://www.homewizard.com/nl/shop/wi-fi-p1-meter/
This meter also exposes an API on the local network. I have written a small driver for the SmartThings Hub, so that you can get the stats/graphs in the SmartThings app as well (we use a SmartThings hub for Zigbee/Z-Wave devices):
https://github.com/danieldk/homewizard-energy