SDG&E to Develop Four Utility Scale BESS with the Help of Mitsubishi Power’s Emerald Storage Solutions in San Diego

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San Diego Gas & Electric Company(SDG&E), a regulated investor-owned utility that provides energy service to 3.7 millions people, has ordered Mitsubishi Power’s Emerald storage solutions. The four utility-scale battery energy storage systems (BESS) projects will total 39 megawatts (MW), / 180-megawatt hour (MWh). The Elliot, Clairemont Boulevard and Paradise microgrid BESS projects will be connected to the existing infrastructure in San Diego to provide reliable capacity. This will help to strengthen grid resilience during high energy demand on hot summer days.

The Emerald storage solutions include the Emerald Integrated Plant Controller, which is an Energy Management System (EMS) and Supervisory Control and Data Acquisition (SCADA) system with real-time BESS operation and a monitoring/supervisory control platform. These control features will ensure critical public services such as fire, police, emergency management and medical are available in case of unexpected outages or peak demand.

Fernando Valero, Director of Advanced Clean Technology at SDG&E, stated, “we live in a time where growing threats from climate changes and extreme heat waves can increase grid reliability. We are making our region and vital community facilities more resilient by expanding our energy storage.”

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The California Public Utilities Commission approved the microgrid BESS projects on June 23. They are expected to go online by mid-2023.

Tom Cornell, Senior Vice-President, Energy Storage Solutions at Mitsubishi Power Americas, stated that SDG&E is an early adopter in the western United States of battery energy storage, and it continues its leadership in deploying energy storage for its customers. We are excited to work with SDG&E to implement these four microgrids projects, as well as the Pala-Gomez Creek storage project which was announced earlier this year.

Mitsubishi Power will provide support for its Emerald storage solutions in SDG&E through a 10-year long-term service agreement.

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