Meanwhile, the cost of solar systems for homes has dropped by approximately 70 percent in the last six years, according to Gallagher. Similarly, the costs for commercial and industrial solar installations have fallen steadily in the past decade.
As the costs for solar technology have declined, though, there's been a surge in power generated from solar installations in California and sometimes a glut of energy so large other states essentially get it for free.
Last month, there were periods in the afternoon when California had more than 60 percent of all power demand met by solar power, according to the California Independent System Operator, the entity that runs most of the electricity grid for the state.
USC's Sanders said with the current solar power generation that the state already has installed means there have been situations in the middle of the day when California experiences a surplus of solar energy. On top of it all, she said said many utilities are locked up in long-term power purchase agreements.
"At some point, demand is going to have to shift to support so much solar energy ... or we're going to have to implement a whole lot of storage to facilitate us even being able to use that solar energy," Sanders said.
Finally, experts say having solar homes generate most or all of their own power also could eventually help California in the face of extreme weather events such as wildfires that destroy portions of the grid or even potentially in other disasters.
"If you look at what's happened in Puerto Rico and other places, they have some huge sections that are out of power due to the hurricanes," said Rocky Mountain Institute's Corvidae. "Wider solar adoption can create greater resilience for extreme weather events that we're starting to see crop up."