Here's a guide to the grid from NPR. [img_assist|nid=2886|title=US Power Plants|desc=|link=none|align=right|width=480|height=310]It makes you wonder, doesn't it, how the electric utilities can have so few critical assets. I would think that most of those big splotches of red in the Southeastern United States where there are so many power plants that the resolution of the map can't show them all would be critical assets, but apparently, not so.