A Chinese bitcoin miner from Shanxi province has been jailed after admitting to the theft of 104,000 yuan ($15,000) worth of electricity from a train network.
Obviously, stealing that much power would take an awful lot of train travel. No matter how many seats with power sockets you reserved, the ticket price alone would far outweigh the potential return.
So Xu Xinghua tapped directly into the Datong train network’s power grid to supply his mining operation. Between November and December 2017, he was running fifty bitcoin mining rigs and three electric fans, 24 hours a day. More
here.