Are you sure about that?
First is that Greenland is not really a country as it is part of the Kingdom of Denmark and second that Greenland in burning quite a lot of oil to produce energy.
And remember, the population is only around ~60 000.
A huge mining farm would drain all the available energy.
I don't think that in any country is the power grid for residential areas designed to allow a mining farm to use it and I'm surprised we haven't yet heard of an electric company suing miners for the damage to the infrastructure.
Or some news about a neighbor smashing the door of a miner fed up with the power cuts and the noise.
I was a miner myself but if my neighbor would start mining in the flat next to me with some s9 and their aircraft fans I'll probably have a serious crowbar talk with him.