Schematic cross section showing examples of chemical, mechanical, and thermal geologic energy storage methods in potential underground settings in a sedimentary basin. This illustration is a higher resolution version of figure 2 of USGS Fact Sheet 2022-3084. Excess electricity can be used to produce a. . European Commission's science and knowledge service. These systems store excess renewable energy and release it precisely when grids need stabilization. Machinery is conceptually like a gas turbine, but some key differences.
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