"Sustainable Energy – without the hot air" is a much better book and available free to read online at https://www.withouthotair.com/ https://www.withouthotair.c

"Sustainable Energy – without the hot air" is a much better book and available free to read online at https://www.withouthotair.com/ https://www.withouthotair.com/ Whilst it's a bit out of date and focuses mostly on the UK, it contains a wealth of figures and references for all possible renewable sources. It covers the topic in a neutral and non-biased way presenting the numbers and graphs to make the point that the transition to renewable will have to require a number of technologies as well as huge energy savings in transportation and heating.