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Posted on: March 23, 2022

Western Municipal Water District advances sustainable energy project

RIVERSIDE – Western Municipal Water District (Western) is pleased to announce the award of $2.4 million from the California Public Utilities Commission Self-Generation Incentive Program (SGIP) for a sustainable energy redundancy project at the Mockingbird Pump Station.

The Tesla Megapack Battery System project installs two 572-kilowatt (KW) Megapack batteries that will enhance energy redundancy by offering 11 hours of continuous power for the Mockingbird Pump Station in the event of an electrical grid power loss and realizing cost-savings opportunities during periods when energy costs are high.

“Western continues to lead the industry into the future by investing in sustainable and innovative energy projects that power our water system,” stated Western’s General Manager Craig Miller. “By enhancing water system reliability and reducing operating costs, Western ensures financial stability and value to the customer.”

Tesla estimates that the batteries could save at least $50,000 annually in energy costs by charging the Megapack batteries when energy costs are low and discharging the stored energy during peak hours. This discharged energy can power the Mockingbird Pump Station or be sold back into the California power grid.

The $2.4 million SGIP grant will provide funding for the equipment, installation, and ongoing maintenance for ten years at the Mockingbird Pump Station. The Tesla batteries were received this month, with the final project completion scheduled for June 2022.

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Western Municipal Water District is one of the largest public agencies in Riverside County, providing water and wastewater (sewer) services to nearly a million people, both retail and wholesale customers who live, work and play within 527 square miles in one of California’s most populous regions. Learn more:

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