I did some quick calculations, but would like to know if I missed anything.
The global hash rate is 1,819,984 Terahash/second currently.
If we assume the Average miner in use at the moment is a Bitmain S7
Specifications:
1. Hash Rate: 5.06 TH/s ±5%
2. Power Consumption: 1278 W
That means it would take 1,819,984/ 5.06 = 359,680 S7s to equal the world wide global hash rate.
359,680 S7s times 1278W each = 459,671,848 Watts.
So the world wide Bitcoin network is using roughly half a Giga Watt of power.
Does that look right to everyone else?