http://www.youtube.com/watch?v=e_CcrgKLyzc

http://www.youtube.com/watch?v=e_CcrgKLyzc

How the "grid" responds to power surges:  http://www.youtube.com/watch?v=UTM2Ck6XWHg

Here's an interesting look at wind vs. nuclear: http://www.youtube.com/watch?v=m9dl_N4tXZc