Considering how much the GDP has grown during Obama's term, only a threefold increase is a pittance when at the same time, the technology to build traditional A&E has gotten so refined that they can design systems that would be extremely cheap, if they had the will to do it.
Solar is a whole different story. Arizona and Nevada have the land available for solar panels that could power the entire Southwestern U.S. But no, it's too ugly. It's too difficult. Just quit whining then about energy prices and oil independence.
Solar alone has never even powered a single 7-11 store in Winslow Arizona.
If our country goes bankrupt and languishes for a long enough period of time, the federal government will take drastic measures. In that climate, the entire electrical grid will cease to function. We can barely balance the power flowing through it now during a relatively prosperous period, and for sure, in a prolonged Depression, there will very well be no fully active grid. Nuclear power will also slowly disappear in a deep economic crisis, because again, in good times, we cannot even build large dump sites for nuclear waste, and temporary storage facilities are beyond capacity.
That leaves us during the abovementioned Depression with only one good solution, because natural gas and coal will certainly not sustain the power needs of all 50 states: Solar power will have to be developed in massive projects across the sun-rich states. The greatest of those states with sun are of course, the ones with deserts.
It is not entirely unlikely that the feds will, through eminent domain, choose Nevada, Arizona and maybe, also New Mexico and pepper all the desert areas in those states with solar panels. That is approximately 2 million square miles of land. Do you think if that happened they will not deliver all the energy those panels can put out when plugged in?