California Energy Commission – Consumer Energy Center
California Energy Commission - Financial Calculator
California Solar Initiative Statewide Trigger Point Tracker
California Solar Initiative, PG&E Program Administrator
PG&E - Solar workshops and information
Provides information on Federal and California State incentives for renewables and efficiency programs.
It's not necessary to replace ALL of your electric usage with solar power. You can use other less expensive measures to reduce the same energy footprint. The following are a couple of links to help you find other measures to accomplish this.
US Department of Energy
• A Consumer's Guide to Energy Efficiency & Renewable Energy