Project Kilby is probably the most intelligent approach to this problem so far.

https://www.chevron.com/newsroom/2026/q2/chevron-signs-20-ye...

The idea is to bring the data centers, power generators and energy supply together in the ~same physical space so the only thing you have to transmit is data. Moving energy is way more expensive than moving information.

The ocean tidal power data center idea was a neat one.