Grist has a post on the growing adoption of solar power in California - Solar installations soar in California.
The Golden State is going into overdrive on solar power. California utility customers installed a record-breaking 391 megawatts of solar power systems last year. That was a banner year for the nation’s largest photovoltaic rebate scheme, with installations up 26 percent compared with 2011.
Those panels were installed with the assistance of the California Solar Initiative [PDF], a $2.2 billion program started in 2007 that aims to help residents meet the costs of installing 1,940 megawatts of solar capacity by the end of 2016.