Re: nuclear power costs
Speaking of citations, T. Boone Pickens' 4 GW wind farm was going to run about $12 billion. If I got my decimals right, that's about $3,000/kilowatt.
Westinghouse's new AP1000 reactors, unfortunately being built in China, not here, are estimated at about $1,200/kilowatt.
This isn't an exhaustive analysis, of course, but I don't think your "three times" number holds up, even if wind power was anywhere close to as reliable as nuclear.
It is a fantasy to think that renewables, conservation, and blue-sky technologies are going to be sufficient to run an advanced and prosperous economy, particularly in the next 20 years. I'd love it if some lab popped up with fusion, but I'm not holding my breath.