If I go with FACTS not any assumptions.
My hydro cost off peak time:8.7 cents
Peak time:18 cents
Mid peak time: 13.2 cents
Average: 12 cents kwh Cad or 10 cents Usd
s7 Hash Rate: 4730 ths
s7 power consumptions 1293 kws
pool fees: 2%
bitcon price: 669 usd
Block Reward:12.5
Bitcoin difficulty: 209453158595.38100 increase 8%-%10 every 11 days
With all these facts EARNING is:weekly EARNING is 26.59 usd.
http://www.coinwarz.com/calculators/bitcoin-mining-calculator/?h=4730.00&p=1300.00&pc=0.10&pf=2&d=209453158595.38100000&r=12.5&er=669&hc=0.00When I multiply current difficulty with 8% and check next week EARNING is 7% less than this week EARNIING.I also calculated third week difficulty with same number and it gives me 7% decrease in EARNING every week.
For example: current difficulty 209453158595.38100 x 1.08= 226209411283.0115
with this difficulty weekly EARNING is 24.62 usd .That profit is 7% less than first week EARNING (26.59usd)
If all these calculations are correct AND difficulty is close to my calculations my EARNING AFTER 52 WEEKS IS 345.1534872
Minus power cost 1132usd.
Only if bitcoin price will increase a lot and difficulty decrease s7 will profit.
weekly EARNING EARNING after difficultY( 7% DECREASE EARNING EVERY WEEK)
week 1 $26.59 $24.73
week 2 $26.59 $23.00
week 3 $26.59 $21.39
week 4 $26.59 $19.89
week 5 $26.59 $18.50
week 6 $26.59 $17.20
week 7 $26.59 $16.00
week 8 $26.59 $14.88
week 9 $26.59 $13.84
week 10 $26.59 $12.87
week 11 $26.59 $11.97
week 12 $26.59 $11.13
week 13 $26.59 $10.35
week 14 $26.59 $9.63
week 15 $26.59 $8.95
week 16 $26.59 $8.33
week 17 $26.59 $7.74
week 18 $26.59 $7.20
week 19 $26.59 $6.70
week 20 $26.59 $6.23
week 21 $26.59 $5.79
week 22 $26.59 $5.39
week 23 $26.59 $5.01
week 24 $26.59 $4.66
week 25 $26.59 $4.33
week 26 $26.59 $4.03
week 27 $26.59 $3.75
week 28 $26.59 $3.49
week 29 $26.59 $3.24
week 30 $26.59 $3.01
week 31 $26.59 $2.80
week 32 $26.59 $2.61
week 33 $26.59 $2.42
week 34 $26.59 $2.25
week 35 $26.59 $2.10
week 36 $26.59 $1.95
week 37 $26.59 $1.81
week 38 $26.59 $1.69
week 39 $26.59 $1.57
week 40 $26.59 $1.46
week 41 $26.59 $1.36
week 42 $26.59 $1.26
week 43 $26.59 $1.17
week 44 $26.59 $1.09
week 45 $26.59 $1.01
week 46 $26.59 $0.94
week 47 $26.59 $0.88
week 48 $26.59 $0.82
week 49 $26.59 $0.76
week 50 $26.59 $0.71
week 51 $26.59 $0.66
week 52 $26.59 $0.61