If you look at the chart above, which I scanned from the December issue of Home Power Magazine (a magazine dedicated to alternative energy so hardly some right-wing journal) it becomes pretty obvious that solar, wind, whatever are not serious alternatives.
Yes, this is true. And why is it exactly that they're not serious alternatives? Because they haven't been seriously pursued.
Meanwhile, you live in a nation whose oil production peaked back in the 70's...and I don't care how much folks squawk about drilling ANWR and offshore, U.S oil production at best could maintain it's present level, but will NEVER increase by nearly 30% to hit it's peak in the 70's.
So, over 60% of your oil is currently being imported, and more and more it's the expensive type of oil and less and less the cheap and easily reachable oil. This does not bode well for the future, of any nation as once cheap oil goes you have a whole host of new problems to deal with.
Then you've got coal. There's plenty of it, but the mining still leaves lots of nice little presents in the surrounding area and it aint fun living next to a coal fired power plant.
There's plenty of natural gas still out there, but as more and more folks switch to that as oil based energy becomes more expensive you're still only delaying the inevitable. Russia is cashing in big time on natural gas right now but at best that spigots going to be running for another two decades and then they'll start seeing diminishing returns very fast.
One country has got it right though. China is on track to become the leading producer, world-wide of solar panels and wind-turbines. They've recognized that they've got big problems and are trying to deal with them before they become un-manageable!