Out of sheer, sheer boredom, I thought I'd see how much electricity my miners chewed through - 4x S9/T9's..
Here in the UK, quick Google sees electricity from a popular supplier is £0.12205 per kw/h. 1x Antminer likes to eat 1.654kw.
So cost per hour = 0.12205 x 1.654 = £0.201..
Cost per day, multiply that by 24 = £4.844..
Cost per month, multiply that by 365.25/12 = £147.466..
Cost per year, multiply that by 12 = £1,769.598..
And multiply by 4 miners = £7,078.39..
The 4 miners have me at 50 or so Thps.
Mr chetminingco, who's hashing 330x more than that, would have an electricity bill of £2.34m if he were hashing here (assuming S9's/T9's).
I doubt very much they are - I would think more likely some places pay way less than the UK for electricity!
Mind on the last block, I think when I looked they made about half a million (US), so must be worth it for them at the current BTC value.
And that electricity price is cheap for the UK. Essex is £0.16 which makes things even worse. Hence why I only have Gekkos (and hopefully soon an R606) on my desk.
If they are making it work then good for them. Just a shame they have come to the "home of the small miner" lol.