Buh, why are you throwing around units in kWh/day? Your argument would be much stronger if you just used Watts. As it is, you sound like you don't have a concept of what energy and power are.
100 Watt-hours/day = ~4.2 Watts
My fridge uses ~400 Watts. (Easily calculable from voltage * current)
It's much more convincing to put it in terms that people are used to seeing.
I imagine the author chose kWh/day because your electrical bill is measured in those units. This is the most important way of looking at it.