Potential for Distributed and Central Electrolysis to Provide Grid Support Services (Fact Sheet)

This NREL Hydrogen and Fuel Cell Technical Highlight describes how NREL operated both commercially available low-temperature electrolyzer technologies (PEM and alkaline) to evaluate their response to commands to increase and decrease stack power that shorten frequency disturbances on an alternating current (AC) mini-grid. Results show that both the PEM and alkaline electrolyzers are capable ofadding or removing stack power to provide sub-second response that reduced the duration of frequency disturbances.