On-site hydrogen (H2) production by electrolysis of water has many potential advantages. Hydrogen could serve as: (1) an energy storage medium for intermittent renewable energy sources, (2) a clean fuel to power fuel cells and IC engines, (3) a feedstock for chemical and fertilizer manufacturing, and (4) a facilitator of the direct conversion of CO2 to liquid fuels. For example, as a storage medium, H2 is predicted to double the adoption of PV & wind electricity. If electrolysis was cost-effective and energy efficient, these applications could disruptively reduce energy-related emissions, including greenhouse gases, provide major positive impacts on energy storage, renewable H2 production, and greatly improve the energy efficiency of residential, commercial and industrial sectors, thereby securing the energy future of the USA.
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