1 / 32

Energy storage: Applications & technology

Energy storage: Applications & technology. IFCBC 04/02/10 Arnon Blum PhD, MBA VP R&D Enstorage. Outline. Why energy storage? Technologies in use or R&D. Conclusion for energy storage systems. Why energy storage?. Power arbitrage: Wind Farm + Storage. Energy Storage in Solar.

enoch
Download Presentation

Energy storage: Applications & technology

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:Applications & technology IFCBC 04/02/10 Arnon Blum PhD, MBA VP R&D Enstorage.

  2. Outline • Why energy storage? • Technologies in use or R&D. • Conclusion for energy storage systems.

  3. Why energy storage?

  4. Power arbitrage:Wind Farm + Storage

  5. Energy Storage in Solar Without Storage Solar Power generation reduces conventional generation requirements 3000 With Storage 2000 EnStorage Confidential

  6. Grid Applications: • Shifting capacity night to day. • Lowering need for spinning reserve. • Lowering the need for new installations.

  7. Electrical Energy Storage can be Connected in Several Strategic Locations: At the Load At Conventional Power Plants At Renewable Energy Sites At Transmission Nodes .... Flexible Deployment

  8. Technologies in use or R&D

  9. Storage Technologies by Application

  10. Pumped hydro • High capacity • Geographically limited.

  11. Compressed Air • Using old gas mines for storing compressed air. • Of peak energy used for compressing. • Lowering the need for new installations. • Adiabatic also stores the heat.

  12. Compressed Air • The first commercial CAES was a 290 MW unit built in Hundorf, Germany in 1978. • The second commercial CAES was a 110 MW unit built in McIntosh, Alabama in 1991. • The third commercial CAES, the largest ever, is a 2700 MW plant that is planned for construction in Norton, Ohio

  13. Flywheel • Energy is stored mechanically in a rotating device. • Good for up to 15min storage, short duration applications.

  14. Flow Batteries Power Energy Energy Cost ($/kWhr) • Uncoupling of Power from Energy: • High hours of storage • Long life Non-Flow Batteries Flow Batteries Hours of Storage

  15. Flow battery - VRB • Main concept: • Based on Vanadium Red-Ox chemistry. • Vanadium solutions are circulated both on anode and cathode. • Storage capacity (Energy) is based on tanks volume. Power is based on the size of the active electrodes . • Membrane is used for separation between anode and cathode. • Cation exchange membrane is used. EnStorage Confidential

  16. Flow battery - VRB • Expensive salts. • Membrane price. • High cycle #. Cells Tanks

  17. Flow battery – BrS (regenesis) One tank: NaBr /NaBr3, second tank: Na2S4/Na2S2

  18. Flow battery -ZnBr

  19. Flow battery -ZnBr • Expensive organic complex. • limited cycle #. • requires 100% DOD ever few cycles. • Capacity & power conjoined.

  20. Meta air battery

  21. Meta air battery • Regenerating the metal is very non efficient procedure • Carbonization of the electrolyte.

  22. Lead acid battery Reaction : PbO2 + Pb + 2H2SO4       PbSO4 + 2H2O + 2e¯ At the negative electrode:      Pb + SO4           PbSO4 + 2e¯   At positive electrode:     PbO2 + SO4 + 4H   + 2e¯           PbSO4 + 2H2O

  23. Lead acid battery • Generation of Hydrogen gas. • Low efficiency. • Low cycle life. • Capacity & power conjoined. 40 MWh system in Chino, California, built in 1988.

  24. VRLA battery (Valve Regulated lead Acid) • Carbon based electrodes. • Higher cycle rates. • Gel type electrolyte. • Capacity & power conjoined.

  25. NaS battery Reaction : Na+ + xS NaSx (cycling of Na)

  26. NaS battery • Proven & mature tech. • Requires 300C. • Capacity & power conjoined. • Self discharge during SB. • Limited cycle #. NAS battery technology has been demonstrated at over 190 sites in Japan totaling more than 270 MW with stored energy suitable for 6 hours daily peak shaving.

  27. NiCd battery Cd electrode (-) Ni electrode (+) Net: • Toxicity. • Memory effect – requires special management system • Capacity & power conjoined.

  28. Li-ion battery Cycling of Li ions

  29. Li-ion battery • High price. • Safety issues . • Complex managing cycling system. • Capacity & power conjoined.

  30. Conclusion for energy storage systems

  31. Conclusion for energy storage systems • Energy storage critical when looking at higher penetration rates of renewable energy. • Storage can help improve quality of utilities and reduce cost. • Many technologies are available – limited number on economic scale. • The storage technology is coupled to the application.

  32. Thanks!

More Related