the foolish utilisation of "the cambridge report" is where many lies lay
everyone know these facts:
network hashrate is peaking at 272exa this week. does not mean that miners hashed at 272exa every day for the previous year. (thus energy report estimates are already too high)
s9's, s11, s15 and s17's asics are not profitable in reality. no one is still mining using outdated hardware. (thus energy report estimates are already too high)
when asic farms set up within xx miles of a green renewable power generator. they are using green energy physically. (although reports sets them as generalised in a wider region/area to set them in the report as using a 'mix energy source')
when asic farms form 6month-2 year contracts with power generation companies. they are rightfully buying an allotment that the power company would else waste, as that allotment is outside of the residential retail 'demand' thus usually goes unpaid for if it were not for the asic farm
the power usage is more so near the 50TWH per year.. not 150
the green % is more then 60%
my feeling is these 'cambridge report' numbers have been fabricated as worse case fudged numbers, so that given a few years politicians can ask cambridge to supply real numbers so politicians can say they fixed the problem. even when there was none..
for those wanting the most basic paper/brain maths that doesnt need a calculator
the average network hashrate for the year 220exa
the average terrahash/watt for asics 0.025
the average 100terrahash/kw for asics 2.5
the average 100petahash/mw for asics 2.5
the average 100exahash/gw for asics 2.5
the average 200exahash/gw for asics 5
the average 220exahash/gw for asics 5.5
5.5*24*365=43800gwh/year
=48.18twh/year