About Mo large-capacity energy storage power station
The Taum Sauk pumped storage plant is ain theregion of , United States about 90 miles (140 km) south ofnear , in . It is operated by . Theplant was constructed from 1960–1962 and. Ameren Missouri has filed plans to build the Big Hollow Energy Center—an 800 MW natural gas plant and its first 400 MW large-scale battery storage facility. The project will boost grid reliability, meet rising demand, and power progress in Jefferson County.
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4 FAQs about [Mo large-capacity energy storage power station]
Will big Hollow Energy Center be Ameren's first large-scale battery facility?
The Big Hollow Energy Center will be Ameren’s first large-scale battery facility, but the utility’s long-range plans call for installing 1.8 GW of energy storage by 2042. A rendering of Ameren Missouri’s proposed Big Hollow Energy Center, which the utility says could come online in Jefferson County by 2028. Courtesy of Ameren Missouri
What is the Big Hollow Energy Center?
The application involves the construction of an 800-megawatt (MW) simple-cycle natural gas generation plant, in addition to Ameren Missouri's first large-scale battery storage facility at one location. Known as the Big Hollow Energy Center, the new facility is designed to efficiently meet increased energy demands while ensuring grid resiliency.
Does Ameren Missouri have a smart energy plan?
“Building off the success of bringing in nearly two dozen new economic development projects in 2024, Ameren Missouri has construction agreements with potential large load customers for new energy demand,” the utility said. Ameren also filed an updated Smart Energy Plan with the Missouri Public Service Commission in February.
What is Ameren Missouri doing to improve energy reliability?
ST. LOUIS, June 27, 2025 /PRNewswire/ -- Ameren Missouri, a subsidiary of Ameren Corporation (NYSE: AEE), is taking the next step in its generation investment plan to enhance energy reliability for customers by filing an application with the Missouri Public Service Commission that includes a first-of-its-kind project for the company.
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