[grondilu]

It has to be, otherwise there is an arbitrage opportunity : hydroelectric power is the cheapest there is.

[TheSpiceIsLife]

Well, I hadn't really looked in to it before, but a bit of a search proves your both right.

Forbes says "The largest share of the miners are located in China, close to the border with Tibet where cheap hydropower is relatively abundant."[1]

1.https://www.forbes.com/sites/peterdetwiler/2016/07/21/mining...