Real Goods publishes a Solar Living Sourcebook, 608 pp, which includes renewable energy sources,
sustainable living practices, alternative construction, and alternative vehicles in addition to utility intertie
systems and off-the-grid living. It is $30, or $25 if you order 3-5 copies, and $20 for 6 or more.

Also available at Real Goods, among other places:

"There Are No Electrons" - a short course on volts, amps, watts, and resistance and is supposedly
a lot of fun to read. $16.

"Solar Electric Independent Home Book" - for understanding, sizing, and installing a solar electric
system. $20

"Practical Photovoltaics" - an understandable guide to design, theory and future of solar cells.
CoEvolution Quarterly calls this book, "The easiest, most complete education of the subject available." $18.