Fun math:

Top miners are about 17.5j/Th

¢5 per kW/hr is relatively inexpensive electricity

• #bitcoin  has 600Ehash mining

• 600Eh @ 17.5j/Th = 10.5mm kj

• 10.5mm kj x ¢5 per kW/hr = $525,000/hr globally

• $525k/hr x 24hr x 356days =

$4,600,000,000/yr for #Bitcoin mining, globally

Cost/yr fiat currency production from treasuries:

• US = $1,900,000,000 per year

• EU = $1,700,000,000 per year

USD & EUR = $3.6 billion per year to run

• JP, etc ???

#bitcoin is not expensive