| Cyran said: How would my power company know how much power my PC using vs what being pulled out of the wall? The only thing my power company can measure is the power being pulled from wall. How could they possible know that my PSU loosing x wattage between going into it and coming out the other end? |
Waveform. Actually it's pretty easy just by looking at the harmonics created by your PSU to discriminate your computer wattage, with a reasonable margin. Just by analysing several weeks of your power consumption times this is something doable even if the metering is performed at the counter. Imagine electrical companies, with the 'smart' meter that have been installed in the last 5 years, have access to millions of load profile and can statistically make such claims.
