In the days of bitcoin mining high energy bills were the norm. Now they miners have all moved to better homes and I am left with myriads of run of the mill appliances. Identifying the energy hungry beasts is not trivial.
|Initial attempt at current measurement with DSO-Nano|
|Seeedstudio Energy monitor with nRF24|
|Apparent power energy monitor with ESP8266|
|Fritzing diagram of apparent power energy monitor|
|NodeMCU Energy Monitor including power supply and voltage sensing|
The data from the monitor gets uploaded every 20seconds or so to Thingspeak. This makes it easy to plot graphs and analyse the data for appliance specific spikes, at the expense of losing control over it and some privacy. If you want to keep it all in house it is better to use something like EmonCMS.
|Multi-day energy use graph(uncalibrated)|