MN isn't THAT much colder than where I'm at in IA, and has similar wind levels.
6-8 months perhaps if he's in the northern part, and some of that only part of the day.
I beg to differ. I'm in North Central MN (near Leech Lake), > 300 miles north of the IA/MN border.
Our winters are significantly colder and longer than say Des Moines.
About 3 months (June, July, and August) outta' the year ambient temps rise above ~75F
Now I'm trying to figure out how his electric company generates the power cheap enough to SELL it at that rate.
Only thing I can think of in THAT area would be nuclear....
Yup, lotta nukes (Excel Energy).
GRE (Great River Energy) is coal, coal, and coal.
Minnesota Power is a mix of nukes, coal, wind, and up here, wood gasification (this is logging country).
We also have some solar and wind on site.
The $0.0465/KwH is off peak (12 hours/day) which will feed/recharge our UPS's/battery bank at night.
During the day solar augments the $0.12/KwH service.
We are expanding our little solar farm as money permits.
With the goal to be exclusively solar ASAP.
The concept is to buy the power once (a depreciating capex expense) versus suffer an ever increasing re-occurring expense (CODB, Cost Of Doing Business).
Once the off peak is online our aggregate power cost should be around $0.05 - $0.06 / KwH and decreasing as we bring more solar online.
MN was one of the few states that implemented (back in the 70's) fair net excess generation statutes.
Put simply, we can buy power @ $0.12/Kwh and can sell power @ $0.105 /Kwh.
Obviously, if our power generation is in a deficit we want to use everything we generate (grid tieing our generation facilitates this).
IF/when BTC mining becomes unprofitable (which it is becoming) we just turn off the miners and the excess generation becomes the profit center.
Another option is to power the (inefficient) miners exclusively with off peak power and only mine 12 hours/day.
Like so many things in this world, there is no single solution to a problem.
It takes a mix of technologies, intelligently arranged, to solve a problem.
In this case the electrical cost to mine BTC.
I like having options.