> Accidents in other energy sources don't render 1,000 square miles of land unin...

> Accidents in other energy sources don't render 1,000 square miles of land uninhabitable.

  The grid came within minutes of overloading and shutting down completely, which would have required a slow and costly black start.

That would have rendered 268,596 square miles uninhabitable, at least for several weeks plus recovery time.