http://www.technologyreview.com/news/534301/price-slump-tests-bitcoins-self-correcting-economics/Several Bitcoin companies ceased operations last week, saying that they couldn’t operate profitably. Small-time miners talked in online forums about having to shut off their equipment.
It is hard to know how many miners experienced similar problems, given the variations in electricity prices and the cost structures of different companies. Mining companies contacted by MIT Technology Review on Friday did not respond. However, data from the Bitcoin network indicates that the revenue generated by all miners each day has roughly halved since the start of the year.
