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Hi

I need help ,to setup home rig

my goal is 15TH/s, the power is free , but each s5 cost 480 $ with delivery
do u think should i start or not ?
and am i mine in a pool or solo , could it be profitable ?

How long it takes for ROI

Thank You

if power is free, its most likely profitable.

15TH/s isn't nearly enough to mine solo. ROI should take around a year but it greatly depends on mining difficulty increment.

Thank You For answers ,
, one more question : 14 s5 cost me 6720$ with out psu
i could get 20th/s in genesis cloud with 7800
which one do u prefer , having your own setup , or cloud services ?

Make sure you buy hearing protection to go with those dozen or more S5's.

I am surprised that you would have 8KW or more of "free electricity".

I think you need to define your "home setup" a bit more here.  To get ~15TH/s from S5s, you'll need 13 of them.  13 S5s will consume 7.67kW of electricity.  That's just about $18.41 a day in electricity costs if the power is $0.10 per kWh.  Somebody's going to notice an increase of $560 a month to their bill...

you can find an antminer s5 for 350, if you look carefully in the market, and maybe even lower if it is heavy used, there is no point in buying new stuff in mining, the more you spend the faster the roi

with free energy, consumption is a non issue, so you shuld break even in 5 months, assuming diff won't change significantly

having your own setup gives you much more control, and is a ton safer for long-term mining..

What do you See as free electricity?

I heard the S5 is too loud for a home set up.  I'd imagine several of them together would make quite a hum.

You can pretty much buy 5 antminer s3's for this price. If power isn't an issue (free) you will end up with 2250 Gh/s (1800-1900 watts) so in turn you will roi faster. Also you can underclock/undervolt them and get 1500 Gh/s @ ~800-950 watts. I wouldn't ever do cloud because in the end poof its done and gone where as if you had hardware you could resell it or if the price rises you can turn them back on.

this is the op's best bet  get 10 - 12 s3's  and with free power mine them.

,
I live in south of Iran , the home given by company i work for , and i stay here for next 6 month

and when i get back to my home , if my average electricity consumption was below 200 Kwh ,  the price for Kwh would be 0.0145 US dollar

  so your kwatts must be 200kwh for cheap price of 0.0145  that is only 6.6 kwh a day.

1 s-5 is

  0.6 kwatts an hour
14.4 kwatts a   day
432  kwatts a   month
now if you are allowed 200kwatts a day  to get a 0.0145 usd price  you are good to go.

I do suggest you make sure if that 200kwatts is a daily number.

Back to my s-3 suggestion.  If your power price is under 0.03 cents for the next 6 months s-3's will make money.

2 s-3's and a psu are about 225-250 usd  here is what  they could do in 6 months

http://imagizer.imageshack.us/v2/800x600q90/538/FO0NPm.png

http://imagizer.imageshack.us/v2/800x600q90/538/FO0NPm.png

if i was in your position, i would already be mining!!!

you need to take in your calculation air cooling! unless you have a cave or something like that!!!
daytime you will need ac cooling for sure, night time is ok just to take fresh air from outside

as there is a dry climate, you can try swamp, evaporative coolers...