David Fickling, Columnist

Bitcoin's Cheap Energy Feast Is Ending

China plans to curb the rise of the machines as power surpluses dwindle.
SeongJoon Cho/Bloomberg
Lock
This article is for subscribers only.

To understand why China is cracking down on power use by bitcoin miners, have a look at curtailment.

The practice -- where producers of wind and solar power cease generation because the entire electricity system is oversupplied -- has been a major problem for the country in recent years. In the northwestern provinces of Xinjiang and Gansu, as much as one-third of wind generation and a quarter of solar was curtailed in the first half of 2017, according to Bloomberg New Energy Finance.