Development of effective hydrogen storage technology is essentially needed to establish an efficient hydrogen energy system connected to the technologies of hydrogen production and utilization. Generally, hydrogen storage technology can be divided into 3 principal methods using compressed hydrogen, liquefied hydrogen, and metal-hydried hydrogen, and currently, all of these hydrogen storage methods have been developed and commercially used. The hydrogen storage method using compressed hydrogen has been the most prevailing so far, but due to its safety problem following the use of high pressure(ca. 15MPa), the hydrogen storage method employing metal hydrides has also been investigated and improved consistently. In this study, a hydrogen storage tank that can store 5,000 ℓ of hydrogen gas has been designed and manufactured, and its capability to be used as an efficient hydrogen storage container has been reviewed. The alloy, the formula of which is MmNi4.7Al0.3(Mm=misch metal), has been manufactured in the high-frequency induction heating vacuum furnace. The structure of the tank is inside-finned tube bundle type with 24 alloy particle packed tubes.