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Nickel metal hydride (NiMH) battery technology offers significant promise as a stationary energy storage solution. However, until recently, little has been seen in the way of tangible products for stationary applications. 2015 witnessed the launch of a unique new NiMH battery-based backup power system for small cells as well as the successful completion of a two year field test of a 2MW NiMH battery system on the Washington, DC Metrorail. This presentation will review NiMH attributes and compare results of side-by-side testing with VRLA and NiCd batteries under GR-3168 recommended protocols. Attendees will be also be introduced to the designs and performance capabilities of the small cell power system and the substation-scale battery system mentioned above.