Abstract: A geothermal energy storage/converting system utilizes hot water and pressure, such as steam, generated by the geothermal heat/ground water to store energy and/or generate electricity. The system utilizes a motion of a piston, driven by steam generated by geothermal heat, to control movement of an amount of water, which is used to store the energy by compressing gas as energy storage. When electricity is needed, the compressed gas provides a force to push the stored water to drive a hydrogenerator to generate electricity. In a geothermal energy converting embodiment, system utilizes a motion of a piston, driven by steam generated by geothermal heat, to control movement of an amount of water to drive a hydrogenerator to generate electricity.

Abstract: A computer-controlled energy storage system optimizes the process of energy storage and electricity re-generation. In an energy storage and release cycle, the gas is compressed and released in a pressure range that is optimized in terms of energy storage and release (e.g., round trip) efficiency. In some embodiments, the gas is not pressurized to an unneeded high-pressure level (e.g., 100 atm) and also does not release to an exhaust pressure level (e.g., 0 atm).

Abstract: A power tunnel comprises a tube body, an inlet, and an outlet. The tube body provides space to accommodate gases, liquids, people, vehicles, etc. The power tunnel can be used for energy storage, power generation, air-raid shelter, or other purposes.

Abstract: An energy storage system includes at least one heterogeneous pressure media and interactive actuation module (“module”), a liquid source, a pump, a converter, a first pipeline, and a second pipeline. The module includes a first container storing an initial gas and a second container storing an initial liquid. The liquid source stores a working liquid. The pump regulates the working liquid from the liquid source into the module. The initial liquid is driven by the working liquid to continuously compress the initial gas so that the first container stores a first pressure energy, and the initial gas is continuously expanded to drive the initial liquid to convert the first pressure energy into a second pressure energy. The second pressure energy through the first pipe drives the converter to generate an electrical energy, and the working liquid after driving the converter is returned to the liquid source through the second pipeline.