In depth comparison of different energy sources

I read it a few years ago and seems a good resource in the current context. It's detailed and with good sources. Takes UK as a case study, but can generalized reasonably well. A teaser: http://www.inference.phy.cam.ac.uk/withouthotair/c4/page_32....

Look for the bar graphs on the right side of the page (page two of the link above). They're at scale all through the book.