With the ever-increasing addition of wind and solar renewable energy to the traditional electric grid, the need for energy storage also grows. Hydrogen from electrolysis is a promising technology for renewable energy capture as it has the capability to store massive amounts of energy in a relatively small volume. In addition, electrolysis can also provide ancillary services to the grid such as frequency regulation and load shifting resulting in multiple value streams. The hydrogen produced can alternatively be used as a transportation fuel, injected into the natural gas pipeline (thus making that energy carrier more green), in the production high value chemicals such as ammonia, or in upgrading of methanization-produced biogas. For these emerging energy applications, the product requirements are still being defined, but the common theme for all of them is the need for large scale. In particular, these markets will require multi-MW's of electrolyzer capacity to satisfy the expected hydrogen requirements.
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