Reliable access to cost-effective electricity is the backbone of the U.S. economy, and electrical energy storage is an integral element in this system. Without significant investments in stationary electrical energy storage, the current electric grid infrastructure will increasingly struggle to provide reliable, affordable electricity, and will jeopardize the transformational changes envisioned for a modernized grid. Investment in energy storage is essential for keeping pace with the increasing demands for electricity arising from continued growth in U.S. productivity, shifts and continued expansion of national cultural imperatives (e.g., emergence of the distributed grid and electric vehicles), and the projected increase in renewable energy sources. Stationary energy storage technologies will address the growing limitations of the electricity infrastructure and meet the increasing demand for renewable energy use. Widespread integration of energy storage devices offers many benefits, including the following: Alleviating momentary electricity interruptions; Meeting peak demand; Postponing or avoiding upgrades to grid infrastructure; Facilitating the integration of high penetrations of renewable energy; and Providing other ancillary services that can improve the stability and resiliency of the electric grid.
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