No, not really. Geothermal can work wherever there's a big enough positive temperature anomaly in the ground. Rift systems with hydrothermal heat can work as well as regions over a deeper magma plume.
Exploiting shallow magma chambers is only possible in a couple regions like Iceland.
> can work wherever there's a big enough positive temperature anomaly in the ground
And is that in as many places as you can dig a mile down? IS the temperature delta in those places on the same order of magnitude as when magma chambers are tapped? If not, gigawatt scale plants would take even more space, no?
No, not really. Geothermal can work wherever there's a big enough positive temperature anomaly in the ground. Rift systems with hydrothermal heat can work as well as regions over a deeper magma plume.
Exploiting shallow magma chambers is only possible in a couple regions like Iceland.