If you are inclined toward reading then go to this site
http://www.nerc.com/~filez/rasreports.html
This is the North American Reliability Corporation 2007 Reliability assessment. It takes a fair amount of reading to decode what they are really saying. But in short - we are screwed.
To paraphrase briefly and loosely (if you want the straight skinny read it yourself)
1 NY will be not have enough energy in 2014, other parts of US and Canada not to far behind.
2 Our projected electric energy needs surpass our projected growth by a pretty good margin.
3 We need to build out base load plants. Recent strategy has been to add smaller gas plants near the load. They take on 18 months to build but do not address the core problem.
4 We have insufficient transmission infrastructure to move the power around, and are not making good progress at planning more.
5 Our engineering work force is retiring and there are insufficient new engineers to replace them.
6 Environmental regulations will make the matter worse.
And this from a pretty conservative group who have their hands on the controls.
If I read the report correctly, and I am only working through it when I have time at work, then these are pretty much "best scenario" assessments. They do not take into account a disruption of the fuel supply, acts of terrorism, exceptional weather, or the like.
I find that the reading is difficult as the language is couched in such a was as to make it seem less threatening. So, to get the real meaning of what they are saying you need to do some work and read closely. Slow slogging.