We will have better batterires thanks to ml material research.
We will be able to calculate and optimize everything related to flow like wind.
The last thing we need to optimize is compute and compute is what has the most money anyway. One of the first industries going green is datacenters. Google for example is going green 24/7 (so not just buying solar power but pulling green energy from the grid 24/7 through geo thermy and others).
AI/ML big datacenters are crucial for all the illneses we have which no one cares enough to solve. For example, i have one of these and we need data to make a therapy for this and i'm not alone.