Energy indepedence can be achived with the "renewable sources" mentioned in
the article, but, be prepared to use half your earnings (or the majority of your government handouts), to pay for them, because, it's going to be a very expensive proposition.
But, energy independence for the U.S. can EASILY be attained. All we need to do is to, like you said, "drill, baby, drill", and that would be to drill for oil and coal and natural gas. The U.S. has enough natural resources underground to makes us energy independent for 100 - 200 years. But, the madness that comes from the government regulations, don't allow us to gain that independence. We could have been energy independent 10 or 20 years ago. Now, we are dependent upon foreign energy sources from countries which hate us, and which take a lot of our wealth away with the cost of that oil, and who also are known to not care about polluting the environment. It's a hypocritical set of regulations which have us offshoring our energy requirements. The hypocrisy is what leads many to believe that, the problem is not about protecting the environment, but about having the government take over more control over our lives through control of the resources we all need so much.