You can become a "pro-sumer". By having solar panels on your home, you will be a producer of clean energy, and if you are tied into the grid (hopefully via a CCE!), you will be a consumer of clean energy when your system is not producing enough energy for your needs. You can sell your over-production of clean energy to the CCE during the day and draw from the grid at night.
The reason that your time is coming soon (actually 2020) is that the California Building Standards Commission unanimously voted to confirm the change in the state's building code to require solar systems on all new newly built homes. This could be either roof-top panels or in a community, solar farm.
This news was shared by Clean Power Exchange and more recently, elaborated in the LA Times. The economy of scale is what will bring down the prices on home solar systems. Making it more affordable for both new homes and retrofitted existing homes.
"But the greatest impact may be on prices. According to an analysis by pv magazine USA Correspondent John Weaver and ASU energy security researcher Dr. Wesley Herche, the soft cost savings of installing solar in massive volumes on new homes – including economies of scale – could drive these installations down to $1.12 per watt. The pair further found that the electricity from these homes could be as cheap at 2.5 cents per kilowatt-hour." -- Reported by Christian Roselund, PV Magazine, December 5, 2018.
And while it has not yet been specified, it sure sounds like homes in communities that have CCAs with 100% renewable energy may qualify just by being in the CCE:
"For some, salvation may lie in the mandate’s allowance for “community-shared solar options,” which could translate to off-site solar farms that would send the energy to the homes via transmission lines. This option would require a bit more planning — as developers would have to buy land for the farms and find a way to distribute it — but could save both sides a small fortune." -- Reported by Jack Fleming, Los Angeles Times, December 14, 2018.