Nergy, energy sources and the interchangeability of energy

I have to propose a replacement for fossil fuels(petroleum, coal, natural gas), as an alternative energy source to replace the U.S. dependency on fossil fuels. Defend opinion and support ideas with facts. No more than 750 words(not counting bibliography), double-spaced, 12-point font, Times New Roman font, one-inch margins, headers and footers. I am required to adhere to 750-word maximum. Be succinct,Brevity is important. Cite facts. Provide source of information by providing a citation within the text. Bibliograpy has to be done in APA style. It has to be done on a separate page(not counted toward the 750-word limit.