Pretty much every part inside of your computer has a maximum rated wattage that it can operate at, with the part consuming significantly less power when at idle. We can use this information to our ...

It runs using a NodeMCU and measures voltage and current across a 100-ohm resistor to calculate the power use, although the resolution does start to get noisy when the device is in standby/sleep mode.

However, it's best to calculate saving estimates based on your ... taking into account seasonal variations in power usage. Most households in Australia will consume around a maximum of 24kWh ...