This grant provides partial support for a new report, The Future of Storage, which will bring together scientific, engineering, economic, and policy perspectives to describe the current state and future potential of technologies to store electricity and the differing roles these technologies might play in the evolving energy sector. Part of MIT’s well-regarded “Future of” series, the project will assemble a panel of top scholars from mechanical engineering, energy systems analysis, and economics to address a host of policy-relevant questions about electricity storage. Questions to be addressed by the study include what role storage might play in electricity systems over the near term (by 2030), midterm (by 2040), and long term (by 2050, and beyond); which storage technologies have the greatest potential for application over various time scales and service requirements; and what public policy, technology development, and market factors most influence the future of electricity storage. Grant funds will provide approximately one-third of the total study cost.