Why Long-Duration Energy Storage Could Be the Key to Grid Reliability

By fosterl June 1, 2026

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When you think of energy storage what comes to mind? Batteries. But what if you need to store 1 GW of power (roughly 700,000 homes) over days, weeks, or a whole season? This is increasingly becoming a reality with an electric grid stretched by data center demand. Your traditional Li-Ion battery won’t cut it. It will require large-scale systems built to store and discharge massive amounts of energy on demand.

Anna Siefken, Director for Policy & Markets, North America for the Long Duration Energy Storage Council joins Mike and Yael for a conversation on Long Duration Energy Storage, or LDES, and why these technologies are the best chance we have to maintain grid stability in this time of growth.

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Yael Grushka-Cockayne

Grushka-Cockayne’s research and teaching activities focus on decision analysis, forecasting, project management and behavioral decision-making.

As an expert in the area of project management, she has served as a consultant to international firms in the aerospace and transportation industries. She is the secretary/treasurer of INFORMS Decision Analysis Society, a U.Va. Excellence in Diversity fellow and member the Project Management Institute.

B.Sc., Ben-Gurion University; M.Sc., London School of Economics; M.Res., Ph.D., London Business School

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Michael Lenox

Lenox’s expertise is in the domain of technology strategy and policy. He studies the role of innovation in helping a business succeed. In particular, he explores the sourcing of external knowledge by firms and this practice’s impact on a company’s innovation strategy. Lenox has a longstanding interest in the interface between business strategy and public policy as it relates to the natural environment; his work explores firm strategies and nontraditional public policies that have the potential to drive green innovation and entrepreneurship.

In 2013, Lenox co-authored The Strategist’s Toolkit with Darden Professor Jared Harris. His latest book,

Lenox is a prolific author; his most recent book, Strategy in the Digital Age: Mastering Digital Transformation, examines how digital technologies and services enable the creation of innovative products and services, as well as identifying new competitive positions.

B.S., M.S., University of Virginia; Ph.D., Massachusetts Institute of Technology

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This article was originally published here: https://ideas.darden.virginia.edu/good-disruption-LDES