How OpenEnergyMonitor works

Good evening,
I’m doing an energy thesis and would like to know how OpenEnergyMonitor works.
Thank you in advance for the help.

Take a look at the ‘Learn’ section - link at the top of this page.

In one line of writing, it samples current and voltage, and calculates the averages – Irms, Vrms, real and apparent power – from those measurements, and by integrating power over time, you get energy.

Ok, thank you so much