The NSA years ago began a small-scale effort to address this problem code-named April Strawberry, the military official said.

WSJ: U.S. Program to Detect Cyber Attacks on Infrastructure

To the extent that more electric generation is required, no problem: Just lay the small-scale modules next to each other, making the financial outlays more manageable.

FORBES: After Fukushima, U.S. Seeks to Advance Small Nuclear Reactors