Wonder how much power/electricity does your laptop or computer consume per hour? Microsoft has this nifty application that does just that — it’s called the Joulemeter.
This one is a screenshot of a Joulemeter reading of my notebook — around 20 watts. I tested this on my desktop PC and it gave me an estimate of 120 watts.
I have stopped using my desktop PC starting this month and completely relied on my laptop so I got curious how much power I am able to save with this move (and hopefully also able to compute how much I save on electricity bills).
Joulemeter also shows estimated consumption of the PC in kWh and CO2 (cubic feet) produced. Check it here and let me know what your reading is.