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Contactez-nousCalifornia municipal utility Glendale Water & Power (GWP) has deployed a megawatt-scale battery, based on Saft’s lithium-ion (Li-ion) technology, at its Grandview Substation. With the near-instantaneous ability to respond to changes in load, this pilot energy storage system (ESS) will demonstrate how GWP can achieve an unprecedented capacity to regulate its transmission system and ensure a reliable customer supply.
Meeting the requirements of the California Renewable Portfolio Standard
GWP is the local, publicly owned, electric utility for the City of Glendale, providing electric services to nearly 88,000 retail customers. GWP has a summer load peak of approximately 300 MW and an annual load obligation of 1.1 million MWh. The utility has made significant progress in meeting the requirements of the California Renewable Portfolio Standard (RPS) and Greenhouse Gas reduction programs. Currently, at least 25 percent of its annual energy requirement is derived from renewable energy sources. GWP is continuously evaluating investment opportunities to ensure compliance to the increasing RPS targets, effectively integrate renewable resources, and maintain an efficient and reliable electric system. This includes the adoption of grid scale energy storage.
Energy storage maintains a balanced electricity supply
Much of the power supplied to Glendale is brought in on a single transmission line, or interconnection, from the Los Angeles Department of Water & Power (LADWP). GWP provides LADWP with a day-ahead forecast of power flows for each 15-minute period, and is working to minimize the difference between forecast and actual power levels, also known as Area Control Error (ACE). Saft worked with GWP and Skylar Resources LP, a St. Thomas USVI based energy marketing and consulting company focused on medium to long-term structured energy transactions, to model several months of ACE data. This showed that a multi-container ESS could effectively control the ACE to within an acceptable margin.
Preparing the way for a full-scale ESS
The current installation is a pilot for a potential larger ESS, designed to follow an ACE signal provided by GWP’s control system and provide a scaled response. GWP and Saft will analyze operating data for the scaled response to verify the effectiveness of the system and evaluate battery aging. Success with the pilot system will provide a sound basis for GWP to deploy the full-scale ESS.
GWP ESS pilot project - key facts
Saft ESS for Glendale Water & Power - key facts
“We are very pleased with the completion and commissioning of the ESS at Grandview substation. This system is now one of the fastest responding storage systems for any municipal utility in Southern California. It gives GWP a flexible, state-of-the-art resource to meet its customers’ needs today and in the years ahead. Collaboration with Saft was key in helping GWP to optimize its operations.”
William O. Perkins III CEO and President of SkylarTo ensure we can respond as efficiently as possible. Please complete this form which will be delivered to our team of experts who will help you with your enquiry.
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