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The San Diego County Water Authority will save approximately $100,000 per year with commercial-scale batteries installed at the agency’s Twin Oaks Valley Water Treatment Plant near San Marcos. The energy storage system is designed to reduce operational costs at the facility by storing low-cost energy for use during high-demand periods when energy prices increase. The batteries were installed at no charge to the Water Authority as part of an agreement with Santa Clara-based ENGIE Storage, a division of ENGIE North America, formerly known as Green Charge.

The San Diego County Water Authority will save approximately $100,000 per year with commercial-scale batteries installed at the agency’s Twin Oaks Valley Water Treatment Plant near San Marcos. The energy storage system is designed to reduce operational costs at the facility by storing low-cost energy for use during high-demand periods when energy prices increase. The batteries were installed at no charge to the Water Authority as part of an agreement with Santa Clara-based ENGIE Storage, a division of ENGIE North America, formerly known as Green Charge.

The Metropolitan Water District’s Board of Directors Tuesday voted to spend $14.7 million over three years to continue its advertising and public outreach campaign promoting water conservation. The vote approved a contract with Los Angeles-based firm Quigley-Simpson & Heppelwhite to lead a new campaign that will feature ads on television, radio, streaming radio, newspapers, billboards, buses and social media. “These efforts have produced results. Our research shows attitudes toward conservation have changed, awareness has increased. But we still have work to do,” Metropolitan board Chairman Randy Record said.

It won’t wipe out San Diego’s rain deficit. But a potentially juicy storm is likely to drop 1 inch of rain along the coast and 1.5 inches in the region’s valleys and foothills later this week, and possibly a few inches of snow on mountain peaks. The National Weather Service says the system — like the one that hit on Saturday — could tap moisture from the sub-tropics as it passes through Southern California.