GunzGear has a video “Electrical Grid Downed by Physical Attack”
And he talks about Hiberniason’s video. He discounts the idea that a coordinated physical attack is likely to work because it would take so many people. He also says he works on construction and repairing damage after storms. He says that there is a lot of redundancy in the grid, partly because of government regulation.
A DirectTV ad, which shows a handglider colling with a power line and knocking out the entire grid, plays up the point that crime would go up if the grid went down. Rather offensive, but true (and I don't know what DirectTV dropped the Weather Channel.)
Update: Feb. 10. The Wall Street Journal has an op-ed by L. Gordon Kravitz, p A11, "The Power Grid: Our Achilles Heel", link here. This is no time for a dysfunctional Congress. But on Feb. 12 Holman J. Jenkins, Jr. offered an op-ed (p. A13), with an opposing viewpoint, that these were vandals with a grudge, "Bulll's Eye on the Electric Grid" (or "Bull's-Eye on the Utility System: There's nothing new about perople shooting out the lights," here.