Mitsubishi Power Americas and Magnum Development are set to begin construction on a 300 GWh underground storage facility in the US state of Utah. It will consist of two caverns with capacities of 150 GWh, to store hydrogen generated by an adjacent 840 MW hydrogen-capable gas turbine combined cycle power plant. The project will use Utah’s unique geological salt domes to store green hydrogen in two massive salt caverns. Advanced Clean Energy Storage I, LLC recently won a $504.4 million loan guarantee from US Department of Energy’s (DOE) Loan Programs Office for the construction of the storage facility. The project will store hydrogen generated by the Intermountain Power Agency’s IPP Renewed Project – an 840 MW hydrogen-capable gas turbine combined cycle power plant located in the area. “The plant will initially run on a blend of 30% green hydrogen and 70% natural gas starting in 2025 and incrementally expand to 100% green hydrogen by 2045,” Aces Delta said in a statement. US-based contractor WSP USA has secured an engineering, procurement and construction management contract (EPCM) to build the two underground hydrogen storage caverns, each with a capacity of 150 GWh. “This stored green hydrogen becomes an energy reserve that can be released to produce fuel for electric power generation at any time,” said WSP USA.