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Reliability is the greatest weakness of solar power. The sun provides an abundant, clean source of power to run steam generators that produce electricity. But it is ineffective after the sun sets.
To address that shortcoming, solar plant developers have plans to build facilities in Inland Southern California to store the sun’s power as heat that can be tapped to run steam generators in the late afternoon and evenings when demand for electricity is greatest.
BrightSource Energy Inc., based in Oakland, recently announced plans to add storage to three of six tower-style concentrating thermal solar plants it will build in Riverside and San Bernardino counties to provide electricity for Southern California Edison customers.
