1 / 21

Energy Storage on the Grid: Informing Future Development

Energy Storage on the Grid: Informing Future Development. Eric Hittinger Advisors: Jay Whitacre, Jay Apt Department of Engineering and Public Policy Carnegie Mellon University. This study examines four energy storage technologies and four applications. Energy Storage Technologies:

earl
Download Presentation

Energy Storage on the Grid: Informing Future Development

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy Storage on the Grid: Informing Future Development Eric Hittinger Advisors: Jay Whitacre, Jay Apt Department of Engineering and Public Policy Carnegie Mellon University

  2. This study examines four energy storage technologies and four applications • Energy Storage Technologies: • NaS Batteries • Li-Ion Batteries • Flywheels • Supercapacitors • Applications: • Frequency regulation provided by energy storage • Peak shaving using energy storage • Wind Integration (Baseload) • Wind Integration (Load-following)

  3. A Co-located wind/natural gas turbine/energy storage system can deliver “baseload” power Wind Power vs. Time 100 MW Natural Gas Turbine Wind Generation Curtailment Wind + Gas Power vs. Time Charge/ Maintain Energy Wind + Gas + Battery Power vs. Time Sodium Sulfur (NaS) Battery “Flat Power” Output (within deadband)

  4. Energy storage is used only to smooth the sharpest wind fluctuations Output After Battery “Smoothing” Wind Farm Output

  5. Cost-of-service is conceptually like a production function

  6. Sensitivity plot for “Regulation” application using flywheels

  7. Sensitivity of NaS battery properties

  8. Sensitivity of flywheel properties

  9. Sensitivity of Li-Ion battery properties

  10. Sensitivity of supercapacitor properties

  11. Capital cost improvements are still valuable even after current technology targets have been met Existing Targets • US DOE’s Energy Storage Program: $250/kWh • American Electric Power: $500/kWh • ARPA-E GRIDS Program: $100/kWh Using $250/kWh:

  12. Research Conclusions The relative importance of storage properties depends on storage type and application… …but certain properties, particularly capital cost, are consistently more valuable to improve. These results can help inform: • Energy Storage Development • Research Funding • Energy Storage Technology Targets

  13. Questions! Support for this research has been provided by the EPA STAR Fellowship, the National Energy Technology Laboratory of the Department of Energy, and the Electric Power Research Institute under grants to the Carnegie Mellon Electricity Industry Center (CEIC).

  14. In the Wind/Natural Gas/Storage systems, storage is used for intermittent sharp spikes 100 MW Gas Turbine 67 MW Wind Farm 0.7 MWh Battery 100 MW Target Power Output Wind Natural Gas Storage

  15. The “load-following” application is very similar to the “baseload” application Wind Power vs. Time 100 MW Natural Gas Turbine Wind Generation Curtailment Wind + Gas Power vs. Time Charge/ Maintain Energy Wind + Gas + Battery Power vs. Time Sodium Sulfur (NaS) Battery “Flat Power” Output (within deadband)

  16. NaS Battery Properties

  17. Li-Ion Battery Properties

  18. Flywheel Properties

  19. Supercapacitor Properties

More Related