SDG&E Adds Energy Storage Facilities for Grid Reliability
San Diego Gas & Electric (SDG&E) has completed two additional utility-owned energy storage facilities totaling 171 MW, enough to power almost 130,000 homes for four hours.
When energy demand is high, the stored water is released downhill to turn turbines that produce energy. The Water Authority and City of San Diego are evaluating the feasibility of developing a pumped storage energy project at the City of San Diego's San Vicente Reservoir near Lakeside.
It would store 4,000 megawatt-hours per day of energy (500 megawatts of capacity for eight hours), enough energy for about 135,000 households. The San Diego County Water Authority, which owns approximately two-thirds of the reservoir's water storage capacity, is partnering with the City on this potential project.
The San Diego County Water Authority, which owns approximately two-thirds of the reservoir's water storage capacity, is partnering with the City on this potential project. The State of California invested $18 million to support initial project design, environmental reviews, and the federal licensing process.
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