I will second the recommendation of the "Sustainable Energy – without the hot air" book, and mention that it is free to download from the above site. It looks a

I will second the recommendation of the "Sustainable Energy – without the hot air" book, and mention that it is free to download from the above site. It looks at the debate from a technical perspective, with extensive appendixes containing the author's calculations. One thought from the book that struck me is that all the batteries in the (eventual) nationwide fleet of electric vehicles, could serve to smooth out the fluctuations from renewable energy sources. The author envisions battery-exchange stations as commonly-found as petrol stations are today.