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NREL, Giner Evaluated Polymer Electrolyte Membrane for Maximizing Renewable Energy on Grid

Giner collaborated with NREL to evaluate a large-scale polymer electrolyte membrane (PEM) stack designed to maximize renewable energy on the grid by converting it to hydrogen when supply exceeds demand.

Photo of a polymer electrolyte membrane stack in a laboratory

Photo by Dennis Schroeder

Megawatt-scale electrolyzers offer the potential for utilities to rely more heavily on renewable energy sources because the electrolyzers are able to capture and store excess energy as hydrogen. Connecting electrolyzers to the grid would make it easier for utilities to add more renewables to their mix because extra energy could be absorbed—not lost—during times of high output or low demand.