I pay, last I checked, 0.06-0.08 kwh (depends on how much you use) and I still did the math to find that Hashnest will profit and turn an ROI quicker by at least 13%. So it will probably be about even, if not less because of cooling cost, security, etc. to run your own even at that good price of electricity. So for me after having done all that math, will most likely get into Hashnest either when they have s9 gh to offer or s7 after the halving.