You're brave enough to invest in such dark times 
I don't know how you guys get free electricity, but if it's free, you'll always be in profit

Soon or later hashrate will reduce if prices don't rise (for ETC, ERGO, RVN, ETHW etc) and you can benefit, but again, with no costs of electricity, you're ahead of 99% of another miners

How much are you earning per day?