North Carolina’s largest battery system now operating at Duke Energy substation

9-megawatt battery located in Asheville will provide energy support to the area’s electric system

Today, Duke Energy announced that it has begun operating the largest battery storage system in North Carolina. The 9-MW/9-MWh Samsung battery system is located next to a Duke Energy substation in the Shiloh community, which is part of the city of Asheville.

Duke said the project cost less than $15M and will be primarily used to help the electric system operate more efficiently providing frequency regulation and other grid support services but added that it could power around 1,000 homes for 4.5 hours on one charge.

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Duke Energy has plans to invest $600 million for 375 MW of energy storage across its regulated businesses.

“Energy storage will play a significant role in how we deliver energy to customers now and into the future as we act to reduce carbon emissions by at least 50% by 2030 and achieve net-zero carbon emissions by 2050,” said Stephen De May, Duke Energy’s North Carolina president.

Duke Energy has more than a decade of experience with battery storage. At one time, the company’s 36-MW battery system next to the company’s Notrees Wind Facility in Texas was the largest battery operating in the United States. It remains one of the country’s biggest.

The battery storage project is just one of many Duke Energy investments in the region. The company recently finished construction of the $817 million Asheville Combined Cycle Station, which became fully operational April 5, 2020. The new station replaced a 344-megawatt, two-unit coal plant at the Asheville site, which retired on Jan. 29, 2020.

The company also recently announced a 5-MW solar facility for the town of Woodfin in Buncombe County.

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at

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