Will Vicent presented an explanation of the state energy system and the development of ZNE. You can view this in the PDF slide show available below.	Ron Kliewer's presentation (second half of the PDF slide show, available below) described  and illustrated many energy-saving home retrofit projects.

Table displays and representatives from Edison and several organizations that provide energy retrofit assistance were present, as well as several local solar installers.

You can view this PDF version of their slide show to see ZNE data and view many photos and illustrations.  The first half outlines the history and political development of ZNE - California's Title 24 Residential Energy Code - and the latter half emphasizes retrofitting for energy savings.  

Here is a clickable list of the additional resources that are listed on the last page of the Slide Show, with a few additional notes:

Database of State Incentives for Renewables and Efficiency (DSIRE)

DSIRE is the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University and is funded by the U.S. Department of Energy.

Zero Net Energy Case Study Buildings

Power of Zero, Brad Liljequist.  This site provides a description of this book on the publisher's site, where it can be purchased.  It is also available through other online sources.  It does not appear to be currently available in the San Bernardino County Library system. 

Net Zero Energy Design, Tom Footman  This is the Amazon listing of this book.  

Zero Net Energy, New Buildings Institute  This site has very comprehensive and current information on ZNE.

Zero Energy Certification, International Living Futures Institute