The North American Board of Certified Energy Practitioners (NABCEP) is the “gold standard” for PV and solar heating installation certification.
Energy Upgrade California is your one-stop-shop for home improvement projects that lower your energy use, conserve water and natural resources, and make your home healthier and more comfortable.
PG&E website answers your questions about solar, rebates, California Solar Initiative (CSI) etc.
The Building Performance Institute, Inc. (BPI) is the nation’s premier standards development and credentialing organization for residential energy efficiency retrofit work.