CAES using porous geological formations such as sandstones could provide the large storage capacities required in future energy systems largely based on renewable sources. In such systems storage pressure, achievable mass flow and power output have strong interdependencies. Thus, an integrated assessment of the power plant and the geostorage is required, for which a coupling approach is presented. Three generic test cases are constructed, demonstrating an accurate representation during all operational modes.
Keywords compressed air energy storage, geological porous media, renewable energy systems, model coupling, numerical simulation