Battery Storage to Mitigate Winter Peaks

Two BGE utility-scale battery system pilots provide capacity to mitigate a winter distribution contingency overload. (Nov 2020)

FAQ

Date: November 2020

BGE is piloting two utility-scale battery energy storage systems (BESS) to provide capacity to mitigate a distribution contingency overload during winter peaks. The first project is a 2.5MW / 4 MWh utility-owned, utility-operated storage system. The second project is a 1.0MW / 1.5MWh third-party-owned and -operated storage system. BGE has contracted first rights to discharge this battery during periods of peak winter load.

Both projects are in front of the meter and will be offered into PJM markets to earn revenue when not providing distribution grid services. The batteries have achieved a positive benefit-cost ratio by eliminating the need to underground 10 miles of a 34Kv feeder. These storage projects are pioneering new ways to value stack distribution grid reliability with wholesale services, while also partnering with third parties to support distribution operations.

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