Re: How about a solar power source for pop one price mining
Phil, i met Sky at the training at Canaan in Beijing last April. I believe solar is a very powerful and possible idea for south american and central american countries. Excited to see the develop of this, and if you need to test this here just let me know 
Sky has my contact info
Sky has my contact infoI do have a prototype that can hold 2 L3+ or 1 S9i
It is outdoors a doghouse available at Amazon.com
I am going to take a photo or two of it now.
about 28 inches long
https://i.imgur.com/Q5PMo2x.jpg
about 25 inches high note air intake
https://i.imgur.com/Jgo42qb.jpg
note air leaving
https://i.imgur.com/th1HHmF.jpg
pair of L3+
https://i.imgur.com/vERn9pS.jpg
could use 1 s9i I am waiting to get some to check how well it cools.
2 L3+ doing voltage mod pull 1360 watts and run cool
https://i.imgur.com/CB8Phmg.png
Note to mods this is not about L3+ As my goal is to build this with s9i
s9i is cheap my tests show power and heat can be managed for L3+
the s9i come soon will show tests for it when it comes.
Sky has inverter/converter power source on order.
If we can build a solar power source with this in the 1500 watt range doing 5 hours per day in NJ where 13.7 to 16.7 cent power is common the source gives 7.5 kwatts a day that is 1.03 to 1.23 usd a day in power or 375 to 457 usd in power in a year.
The power source should have a long life no batteries involved
Easy to setup no grid connection.
the panels rate 20 years
the inverter/converter is 5 or 7 years.
So if we can sell it cheap enough it could work out.
Of course practicalities come in
maybe the ratings are too high .
maybe it does not last the timespan it should
we won't know till we rest a bit.