Power generation is already slowly becoming more and more decentralized. If, and a big if at that, battery prices continue come down storage should also become increasing so. Such a structure is obviously far harder to physically knock out.

Smart grid, large scale grid integration in general and long range UHV ultra high voltage transmission could make the grid on the other hand more vulnerable to physical and cyberattacks.

I'm curious how this plays out in the long run, although with adequate investments even the direct energy security the ups outhweigh the downs in my humble guess.