Long Duration Energy Storage (LDES)

October 23-24 | Live Streaming Online

A Program

Click Here to register $1195

If you are unable to attend at the scheduled date and time, we make recordings available to all registrants for three business days after the event

Interest in long duration energy storage is escalating rapidly as the growth of variable output renewable generation proliferates and issues with grid stability become more tangible for grid operators.  Energy storage firms, extends and shifts the range of these renewable power resources so they can begin to approximate baseload energy. Long duration storage also promises to improve system reliability during the diurnal and seasonal conditions that otherwise complicate the transition from thermal/fossil generation to a 100 percent renewable energy grid.

This course explores the growing need for long duration energy storage and how it fits with the grid operating requirements of utilities, ISOs and RTOs.  The program will examine how policymakers, regulators and power organizations are influencing the advance of long duration energy storage. Specific types and technologies of long duration storage will be discussed and evaluated, including relative costs and capabilities of different technologies. Finally, the symposium will consider the trajectory of how and when these energy storage solutions can provide the essential bridging functions to 24-hour/7-day/365-day (8760) renewable energy grid operations.

Learning Outcomes

  • Review the history and background of energy storage
  • Discuss what long duration is today and what will it be when renewables provide 50% of the total energy
  • Discuss the growing need for long duration energy storage to accommodate the growing increase of renewable generation on the grid
  • Illustrate the applications for energy storage across the energy industry
  • Review the policy and regulatory environment for long duration storage
  • Identify the various long duration storage technologies, including pumped storage, flow and non-lithium batteries, gravity and hydrogen
  • Review several long duration storage pilot projects and case studies
  • Assess the relative costs and capabilities of different technologies
  • Examine the future outlook and projected outcomes for long duration storage in the next decade or more



9:00 a.m. – 4:45 p.m. : CENTRAL TIME

9:00 – 9:20 a.m. :: Overview and Introductions

9:20 – 10:30 a.m. :: Survey of Long Duration Storage

  • History of storage
  • Understanding the current mix of storage
  • Why storage will be required with intermittent renewables by 2035
  • Definition of long duration storage
  • Relationship of existing lithium-ion storage deployment to the role and timing of long duration storage deployment
    • Storage accreditation for capacity / resource adequacy
    • Diurnal and seasonal dimensions
  • Uptake trajectory and timing

10:30 – 10:45 a.m. :: Morning Break

10:45 a.m. – 12:15 p.m. :: Policy and Regulatory Drivers

  • Inflation Reduction Act (IRA) and Infrastructure Investment & Jobs Act (IIJA) incentives
  • S. DOE Loan Programs Office (LPO)
  • Domestic supply considerations
  • Supply chain aspects
  • Decarbonization influences

12:15 – 1:00 p.m. :: Lunch break

1:00 – 2:45 p.m. :: Long Duration Technologies

  • Pumped storage
  • Compressed air
  • Batteries
    • Flow
    • Zinc
    • Sodium
    • Iron-based chemistries
    • Other chemistries
  • Thermal
  • Hydrogen and eFuels
  • Gravity-based storage

2:45 – 3:00 p.m. :: Afternoon Break

3:00 – 4:45 p.m. :: Technology Evaluation

  • Descriptions of the different technologies
  • Services provided
  • Round-trip efficiencies
  • Environmental and siting issues
  • Time-scale range
  • Safety
  • Energy density
  • Testing and warranties
  • Physical footprint
  • Scalability
  • Domestic content
  • Commercial availability and delivery timelines
  • Supply chain

4:45 p.m. :: Course Adjourns for Day


9:00 a.m. – 12:30 p.m. : CENTRAL TIME

9:00 – 10:30 a.m. :: Relative Costs and Capabilities of Different Technologies

  • Construction lead times
  • Costs
    • CapEx
    • OpEx
    • Profit model
  • Integration and hybrid operation
  • Performance aspects
    • Energy shifting
    • Capacity firming and dispatchability
    • Renewable power integration
    • Ancillary services
  • Augmentation
  • End of Life
  • Value recognition in wholesale electricity markets
  • Regulatory barriers
  • Benefits
  • Obstacles and opportunities to deployment
  • “Early movers”

10:30 – 10:45 a.m. :: Morning Break

10:45 a.m. – 12:30 p.m. :: Converting Promise in to Action

  • Pilot programs/case studies
  • Procurement considerations
  • Conclusions and projected outcomes within the coming decade

12:30 p.m. :: Course Adjournment