I put "green" not in scare quotes but to point out that there isn't any truly consequences-free energy, the datacenter itself may be mostly green but the PNW grid can and does have some peaking carbon-fuel based power plants in the mix, and there's well known environmental consequences from flooding vast areas of land to build a new hydroelectric dam.

Many of the dams we have now were permitted and built in the 1930s-1950s era when the external consequences of building them were barely considered.