San Diego Gas & Electric Will Upgrade Borrego Springs Electrical Microgrid

By District Energy posted 08-05-2020 09:18

  

Times of San Diego

Summary

 San Diego Gas & Electric will use a $4.5 million federal grant to upgrade the Borrego Springs microgrid with new technology so it can operate on completely clean energy, the utility announced Friday.

The grant, from the U.S. Department of Energy’s Solar Energy Technologies Office, will provide funds to purchase smart power inverters, controls and an energy management system. The new devices will improve energy reliability, stabilize the microgrid and help it become 100% renewable.

A microgrid is a mini power grid and may include a power source like solar energy, an energy storage component and controls and switches that allow it to operate independent of or parallel to the larger grid. The Borrego Springs microgrid is the first such utility-owned grid in the nation.

“This grant award comes at a pivotal time for our customers, our company and the next evolution of microgrid technology,” said Will Speer, vice president of electric engineering and construction for SDG&E. “Microgrids are one of the tools to enhance community resiliency and maintain energy service during emergencies. With the smart grid technology that we will incorporate into the microgrid, we are confident that this facility can become a model for future clean energy microgrids.”

The Borrego Springs microgrid began operations in 2013 after SDG&E saw an opportunity to improve energy resiliency for the approximately 2,800 people in Borrego Springs — a remote desert town subject to extreme heat and monsoonal weather. Until then, the town relied on a single transmission line and distribution circuit for its power. The microgrid is connected to a local 26-megawatt solar field — owned by a third party — two battery storage systems, two generators and an ultracapacitor to keep power flowing to the town during emergencies and planned outages on the larger grid.

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