General Discussion

Either solar cells, wind power, hydroelectric power, or some other similar means.
The main requirement should be that it does not have any negative impact on anything or anybody outside their data center. Any adverse impact on the environment should not be allowed.
They should also be denied use of any water for cooling that comes from wells, streams, rivers, lakes, or any other natural water resource that is or could be used by the communities around the data centers.
If their AI is so smart, let it figure it out.