KEPCO Completes Asia's Largest 978MW ESS Facility

Korea Electric Power Corporation held a completion ceremony for the grid stabilization ESS construction project on the 26th. Photo by Korea Electric Power Corporation

On the 26th, Korea Electric Power Corporation (KEPCO) announced that it held a completion ceremony for the construction project of the largest energy storage system (ESS) for grid stabilization in Asia at the 154-kilovolt (kV) Bubuk Substation in Miryang, Gyeongnam.

This project involved an investment of approximately 830 billion KRW to establish facilities including power conversion systems (PCS) with a capacity of 978 megawatts (MW) and batteries with 889 watt-hours (Wh). A total of 14 companies participated, including Hyosung Heavy Industries, LS Electric, HD Hyundai Electric, Samsung SDI, and LG Energy Solution.

The completion ceremony was attended by about 150 government, local government, and private sector officials, including Seo Cheolsu, KEPCO Vice President of Power Systems, Lee Hohyun, Director of Energy Policy at the Ministry of Trade, Industry and Energy, Ryu Myeonghyeon, Director of Industry at Gyeongsangnam-do, and Ahn Byunggu, Mayor of Miryang.

The ESS for grid stabilization is intended to alleviate generation constraints caused by delays in power grid construction (up to 1GW) and will be used for frequency regulation once the power grid construction is completed in the future.

KEPCO explained, "This ESS construction project successfully incorporated diverse opinions from local residents through public hearings and on-site briefings, and was completed successfully thanks to the active cooperation in permits and approvals from local governments such as Gyeongsangnam-do and Miryang City."