One huge opportunity is in the electrical energy space. With renewables our transmission systems and the control of those many resources is lagging. From control systems point of view having a small number of well controlled sources of energy, aka power stations, it was simpler to manage the load and distribution. Now we have millions of capricious generators of which hundreds are very large, e.g. wind farms and solar farms. Even with grid scale batteries it is like herding stray cats.