PRESENTATION BY ZBB TECHNOLOGIES, LTD

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Demonstration of a 2-MWh Peak Shaving Z-BESS
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Project Contributors

• California Energy Commission
• Funding
• ZBB Energy Corporation
• Energy Storage System
• DUA
• Integration and Site Testing
• DOE, Sandia National Laboratories,EPRI Solutions
• Data Acquisition and Analysis

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Goals of Program

• Manufacture a 2-MWh/2-MW battery energy storage
  system
• Demonstrate the battery for utility peak shaving
• Test 500-kWh unit at DUIT
• Test 2-MWh system at utility demonstration site.
• Evaluate economic benefits of the system
• performance
• availability

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50 kWh Zinc/Bromine Battery Module

• 50 kWh (dc)
• 50 kW peak power
• 120 to 0 Volts (dc)
• 0-600 amps discharge
• 12.8 ft2 footprint
• Approx. 3000 lbs.

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Chemical Reactions
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50-kWh Battery Module AssemblyElectrolyte
Storage Tanks with Plumbing Connections
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50-kWh Battery Module AssemblyModule Containment
Frame
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50-kWh Battery Module AssemblyInstallation of
Pumps
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50-kWh Battery Module AssemblyModule Assembly
with Tanks, Controls and Pumps
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50-kWh Battery Module Assembly Installation of
Battery Stacks
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Assembly of 50-kWh Battery Modules
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500-kWh Battery Design

• Two strings of five 50-kWh battery modules
• Housed in a 20-foot military cargo container
• Full side opening access doors
• 250 gallon sump capacity
• 15 kW available battery cooling
• Container weight 8,900 lbs.
• Total weight approximately 40,000 lbs.

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500-kWh Battery Configuration
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500-kWh Zinc/Bromine Battery Container
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Loading Modules into 500-kWh Container
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Loading Modules into 500-kWh Container
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Fully Loaded 500-kWh Zinc/Bromine Battery
Container
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500-kWh Battery Summary
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500-kWh System Design

• 500 kWh battery housed in a 20-foot military
  cargo container
• 500-kW / 625-kVA PCS
• Battery, PCS and cooling equipment mounted on
  45-ft. flatbed trailer
• Total weight approximately 50,000 lbs.

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Power Conditioning SystemPCS Specifications

• 500 kW / 625 kVA
• 3? output, 480 Vac, 60 Hz
• Bi-directional, full four quadrant control
• Aux. Power 3?, 208 V
• 96W x 57D x 98H
• Weight 10,100 lbs.

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500-kWh Battery Voltage Profile
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250 kWh String Power Curve
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Future Work Schedule

• Delivery of first 500-kWh to DUIT (Oct. 2005)
• Testing of first unit (Nov. 2005-April 2006)
• Complete manufacture three additional units
  (April 2006)
• Delivery of four units to demonstration site(May
  2006)
• Testing at utility demonstration site(May
  2006-Dec. 2007)