I suspect you are cherry picking your numbers by pricing demonstration projects (concentrated solar) which I agree is not a viable renewable source today. I also will cherry pick to some extent. Wind energy, unsubsidized is competitive in certain parts of the country with coal and gas. Nuclear is dead. Of course this doesn't include the cost of air pollution (look at China and their health problems). I live in the northeast and a few years ago I said the vues of the city at night looked clearer. That's when I realized the coal plants were gone. Trump expressed concern about windmills killing birds (cats kill millions of birds). When you hear a republican worrying about the environment you have to think something is fishy. What is the real reason he now worries about birds? The answer is the Koch brothers. Global warming was first proposed around 1900 by the chemist Arenhius and I first heard about it in 1972 in organic chemistry class. The science is sound but you only have to worry if you have grandkids.