If you're into this sort of thing and want an engineer friendly breakdown of different approaches for getting off fossil fuels that actually add up I highly rec

If you're into this sort of thing and want an engineer friendly breakdown of different approaches for getting off fossil fuels that actually add up I highly recommend, "Sustainable Energy – without the hot air". It lays out a number of alternative plans complete with plenty of math :). The book is available online for free. It can also be purchased at Amazon. http://www.withouthotair.com/ http://www.withouthotair.com/ It's written by David MacKay a Professor in the Department of Physics at the University of Cambridge.