Solar panels create more energy than most homeowners in the San Rafael, CA area can use. A battery backup system allows you to store the excess solar energy to use at night when the panels aren't producing. Without this stored solar energy, you'd need to pay for electricity from an energy company.
A backup power source also allows solar panels to function when the city's grid goes down. If you've made the switch to solar power, make it complete by installing a battery backup system. Call SonoMarin Solar Inc today to see if a battery backup system is right for you?