> A colleague of mine tracks all of his homes energy use through a custom program which disaggregates the energy consumption per device and outputs a report to

> A colleague of mine tracks all of his homes energy use through a custom program which disaggregates the energy consumption per device and outputs a report to a tablet. This might not be in the "spirt" of this post but your colleague might be interested in looking into Home Assistant. Don't worry, there is plenty of space for custom scripts within HA, but it might be a nice foundation for them to build on as it has energy monitoring stuff built in as well as a way to visualize it all.