In Germany, Uniper reported that the Hydrogen Pilot Cavern (HPC) Krummhörn demonstration plant was opened on August 26. The hydrogen storage projects HPC Krummhörn in Lower Saxony and HyStorage in Bavaria, where a gas mixture of natural gas and hydrogen is stored in a pore storage facility, are part of the implementation of Uniper’s strategy and serve to prepare commercial storage projects for hydrogen, the company said. The creation of the pilot cavern in Krummhörn with a geometric volume of approximately 3,000 cubic meters was completed by using solution mining at an existing borehole at the Krummhörn site. With a total storage volume of almost 500,000 norm cubic meters of green hydrogen, the storage facility will be one of the first of its kind, Uniper added. Juniper noted that the next step will be the initial gas filling and the operation of the demonstration plant with various injection and withdrawal cycles in the coming year. During the entire project period, equipment and materials are to be tested for hydrogen compatibility in a real environment and experience is to be gained about the quality of the stored hydrogen, thermodynamics and rock mechanics, the company added.
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