This thread started by OP is a FUD.
No it's not. The calculation may be false (because he assumes that the mining efficiency of the miners is still what it was one year ago), but the result is valid : the Bitcoin network consumes a very high electric power for such a small economy.
Right now the power of the Bitcoin network is in the range of a small nuclear reactor (see my post
here) : 600 MW.
This calculation only take the electricity spent by the miners. Not the electricity spent by Blockchain.info, Bitstamp, Bitpay or any other part of the Bitcoin economy.
And if we want to be fair we cannot assume that all the electricity spent by the banks is necessary to run "the fiat network". We should only take into account :
- the printing of the paper bills (probably in the range of $0.01 per dollar or less)
- the minting of the metal coins (maybe up to $0.5 per dollar)
- the running of the central banks ($0,0000??? per dollar)
This is what must be compared to the cost of running "the Bitcoin network" (mining costs).
All other actors of the system (commercial banks included) are only "users" of the fiat system. The day they switch to Bitcoin they will spend exactly the same amount of energy than with fiat.
There is an argument to be made that the Fiat system uses Fractional Reserve Banking (FRB) and generally has a minimum 2.5% non negotiable exponential growth target, that results is an exponential environmental consumption tax.
The FRB system favours big business, it loans money pre growth and inflation and profits post growth and inflation. The result is industry is encouraged to find new and innovative ways to increase consumption. The outcome is disposable 1 time use packaging, built in obsolescence and optimising a cradle to grave use of recourses (he who consumes the most benefits the most)
In a world with a finite money supply capable of functioning without FRB, the result would be akin to a permanent deflationary spiral, this would have a negative impact on consumer goods, (less the essentials people seem to always buy food) people would shift to conserving capital reducing the motive from investing in new recourse extraction, and incentivising thrift and efficiency. (he who delays consumption benefits the most)
This impact could be achieved with finite crypto currencies and the impact on the plaint would be staggering, people would voluntarily offset consumption, to benefit at a future date.
When you factor the environmental effects of our existing economic system (cradle to grave incentivised consumption in the name of economic growth) the cost of securing Bitcoin is insignificant.