Abstract
Energy storage (ES) has become one of the hottest topics to the world’s clean energy future. Research on materials and devices has made successful progress in reducing the cost of Li-ion systems and of several flow battery systems. However, safety, material sustainability, and other factors such as maintenance and decommissioning costs that affect the levelized cost of storage also need to be considered in developing a circular economy to enable reliable, resilient, and flexible electric grid.ES in the United States (US) has become a resounding success. We have done well in short-duration energy storage, by developing viable business models, evaluation and planning tools, and so on. ES has achieved a great feat in frequency regulation, smoothing renewable energy, demand charge reduction, and substation upgrade deferrals. Going forward, energy storage of medium and long duration as well as short duration with further lower cost will be needed.The presentation will give a high-level overview on the current state of DOE’s Office of Electricity (OE) supported energy storage technologies. Sodium-ion batteries, aqueous zinc batteries, and several new lines with earth abundant, inexpensive materials, and reliable supply chains and a wide industrial base will be covered. Reliability, safety, and representative examples of the successful deployment of OE technologies across multiple states in US will be touched.As the return on investment is what really counts for the commercial success of energy storage applications, the presentation also will discuss several real cases of diverse monetized and unmonetized benefit streams from multi-megawatt deployments and how these assessments are needed for new technologies and longer duration applications.
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