Residential emissions make up 14 percent of California's total emissions. That is about to change, though, thanks to the California Global Warming Solutions Act, signed into law in 2006. Learn:

The benefits of geothermal energy
Solar Water Heating
Identifying Cost-Effective Residential Energy Efficiency Opportunities for the Kauai Island Utility Cooperative
Solar Water Heating
2009 Renewable Energy Data Book
Planning for PV: The Value and Cost of Solar Electricity
Green Home Case Study: Seattle's Studio 24
Nutrition Labels for Homes: A Way for Homebuyers to Make More Ecological, Economical Decisions
Own Your Power! A Consumer Guide to Solar Electricity for the Home
2009 Renewable Energy Data Book