How Solar Cells Work
www.gopower.com

Solar organizations
www.ases.org
www.mseia.net
www.dsireusa.org

Solar and Wind Manufacturers
www.sunpowercorp.com
www.apricus.com
www.enerworks.com
www.cleanfieldenergy.com
www.sma-america.com
www.xantrex.com
www.pvpowered.com
ca.sanyo.com
www.sunwize.com

Solar Certification:
www.nabcep.org