e-Poster: Scalable Subsea Electrolysis Arrays for Offshore Wind Energy Hydrogen Production
(Room Station 1)
22 Oct 19
12:30 PM
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12:45 PM
Tracks:
Technology and Innovation
As noted by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy, the use of hydrogen and fuel cells in transportation is currently challenged by unacceptably large land area requirement [1]. GTA’s mission is to ameliorate the large land area requirement by adding renewable hydrogen production by subsea electrolyzers that are powered by offshore wind turbines. GTA electrolyzer arrays are anchored at the seabed beneath multi-gigawatt fields of offshore wind turbines. The turbines are dedicated electric power sources for the electrolyzers. Water electrolysis is a self-pressurizing process. Deep-water hydrostatic pressure is leveraged for hydrogen production and storage at high pressure without mechanical compressors in safe locations away from population centers and inclement weather. Cold subsea water is used for passive cooling of the electrolyzer arrays. Subsea umbilicals provide replacement water that is consumed by electrolysis as well as hydraulic and electric power and process control information in a manner that is analogous to their current role in offshore gas and oil production. GTA is among the first cohort of companies selected for the U.S. Department of Energy’s H2@Scale CRADA program. GTA’s scalable TRL 4 electrolyzer was tested and validated at the National Renewable Energy Laboratory. [1] Fiscal Year 2019 H2@Scale Funding Opportunity Announcement, pp. 28-29. DOE Office of Energy Efficiency and Renewable Energy, Washington, DC.