Next Generation Flow Batteries for Grid Scale Energy Storage Fuel Cell Seminar 2015
Agenda Why Storage Operational Concept Technology Challenges Addressed Safety Scaling up & Partnerships Conclusion
Why storage?
Why storage? No wind case Day to night Generation and demand T&D (transmission & distribution) Micro grids Behind the meter applications And many more
CAISO Report on Wind Intermittency
Operational Concept
The EnStorage Technology Converting HBr HBr3 POWER IN Generating & Storing H 2 20 Converting HBr 3 HBr 2 H Consumed 20 15 15 10 10 5 5 0 0 Totally Sealed System No Emissions or Solid Waste Infinite Electrolyte Life POWER OUT EnStorage Confidential Information
Technology Challenges Addressed
Challenges Solved The challenge: Membrane cost The solution: Developed low cost PVDF based membrane less then 5% the cost of PEM used in other flow system No dry out issues No degradation due to sulfonic groups disassociation Manufactured in house, not available for 3 rd party IP protected
Challenges Solved The challenge: Electrolyte cost & availability The solution: Use of HBr Cost of electrolyte is $20/Kwh, compared to Vanadium which is over 10X in price No availability issues - many sources. Production exceeds demand No use of expensive complexing agents 2 electron reaction vs 1 in Vandium or Ir/Cr
Challenges Solved The challenge: One device working as fuel cell and electrolyzer The solution: We have 1 stack that works in both modes fuel cell & electrolyzer Basic module is a 12.5KW stack Scaling to larger storage system is done by using multiple stacks
Challenges Solved The challenge: Expensive catalysts used in past HBr systems The solution: For the HBr side no catalysts For the Hydrogen side low loading non Pt based catalyst / alloys Alloys are produced in house IP protected
Challenges Solved Stack components Use of the shelf technologies developed for PEM systems: Bi-polar plates, Carbon papers etc. no use of activated felt on specially frames Hydrogen compressing Electrochemical Hydrogen compression. No use of mechanical compressors Shunt currents Treated on the stack level, no complex stack inlet manifolds
Safety
Safety Passive Active System is sealed Spill tanks are embedded Hydrogen storage is external No free Bromine Various manners to avoid vapors Various detectors Multiple measurements to detect and stop leaks The application Wind & solar farms not for residential small units
Scaling Up & Partnerships Scaling up and partnerships
This Is How It All Started EnStorage Confidential Information
Inside View BMS The blur is intended EnStorage Confidential Information
System in Construction With AREVA and Schneider Electric 150KW/900KWh EnStorage Confidential Information
Conclusion
Why EnStorage Strong management and technical team Strong IP portfolio Capital Efficient Our Strategic Partners AREVA & Schneider Multi billion market $0.1-0.15 LCOE EnStorage brings a cost effective and proven large scale energy storage solution
Thank you Arnon Blum Arnon.Blum@EnStorageinc.com