The Wall Street Journal and NSA think that Anonymous is going to cause a blackout, except its not possible, and they won't. They're even saying so themselves. So why the paranoia?

The WSJ says that "The director of the National Security Agency has warned that the hacking group Anonymous could have the ability within the next year or two to bring about a limited power outage through a cyberattack."

The claim itself is absurd, and while you can put a lot of things on Anon, whether it be nihilist, anarchist, - terrorist isn't one of them. Its targets were always entities of authority and moneyed interests. So why target the power grid in the first place? WSJ quotes a clueless think tank with the following:

"You want to occupy Wall Street? How about turn Wall Street off? Even for a day." Shutting off power would cause pain for a lot of everyday people, which is not in the same philosophy of Anon's mantra.

Anonymous' de facto official Twitter channel echoes the bullshit sentiment:

The NSA's reprehensible fear-mongering and attempts to discredit #Anonymous are transparent and baseless.

NSA's alarmist rhetoric & fear-mongering is reprehensible. They should focus on the myriad of current security holes.
So no, they're not going to do something like shutting off the power grid. Take a chill pill.