[Symbiote]

Isn't more of the reason political (taxes etc)?

The same climate benefits apply to northern England and Scotland, but Great Britain's grid's capacity has around 10 times the capacity.

(Ireland's grid's peak demand was 6.8GW, Great Britain's 63GW.)

Although the same argument then applies for siting the datacentres in continental Europe, where the grid is around 667GW. Perhaps this is part of Facebook's reasoning for a second datacentre in Denmark.

(Most of Denmark, including Facebook's existing datacentre, is connected to the continental European grid. The eastern islands are part of the Scandinavian grid.)

[1] https://www.thelocal.dk/20211013/facebook-eyes-second-danish...