Iceland last year consumed approx. 200 trillion BTU's for energy consumption.
The United States consumed approx. 100,000 trillion BTU's for energy consumption.
I could see going Nuclear for electrical such as France, but many road blocks and political hoops to jump through that.
The fact is, renewable resources are a great idea. But really until there is a magic wand that appears, we are a country dependent on fossil fuels.
The first discussion in regards to energy in this country has to ask the question....how do we use less.