CONFIDENTIAL

Combined Vehicle Fueling and Back-Up Power Applications

National Hydrogen Association Annual ConferenceMay 5, 2010

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Robins Air Force Base, GA

Solar-Integrated Forklift Refueling

Hydrofiller 175 Unit Produces 10 kg/day

Avālence Hydrofiller Technology

Ultra-pure H2 and O2 electrolytic

production

Low-cost liquid alkaline construction

Zero emission operation when integrated with renewable power

Generates no CO2 emissions

Seamlessly utilizes grid power as needed

Direct 3000 psi production eliminates the need for compressors and conditioners

High system reliability that allows long-term, unattended operation for seasonal energy storage and reuse

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3

Combining H2 Applications

When using Avalence High-Pressure Hydrofillers:

All On-Site H2 Systems Require H2 Production Unit (Includes Drying)H2 Storage (if not directly feeding a process)

To Add Vehicle Fueling CapabilityH2 Dispensing Single Stage Compressor (For Applications at Pressures >3000 psi)

To Add Back-Up Power DeliveryH2 Fuel Cell

Reduces the Relative Cost of Capital Equipment by Combining Applications that Share Common Components

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Combined Use System Schematic

Robins Air Force Base, GA

Solar-Integrated Forklift Refueling

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H2 Fueling Stations Installed/Planned

Robins Air Force Base, GA

Solar-Integrated Forklift Refueling

General Motors, MI, 3 kg/day Solar-Integrated Vehicle RefuelingInstalled October 2007

University of Toledo, OH, 1 kg/dayExperimental Vehicle FuelerInstalled June 2008

Robins Air Force Base, GA, 10 kg/dayForklift/Utility Vehicle FuelerInstalled Dec 2009

Greater New Haven Transit District, (GNHTD) CT, 10 kg/dayFuel Cell Para-transit Vehicle RefuelingIncludes 10 kW Back-Up Power Fuel Cell Planned Installation Sept 2010

CTTRANSIT, Hartford, CT, 30 kg/day Fuel Cell Transit Bus Fueling, Partially Powered by PVPlanned Installation March 2011

Solar Powered Hydrogen Fueling Station at General Motors, Milford, MI Production Storage Dispensing

Self-Contained, Off-Grid Operation

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“Typical” Single Use Vehicle Fueling Application

Complete 10 kg/day Fueling Station

Hydrofiller 175 Production Module

30 kg of Storage at 6250 psi

5000 psi Fast Fill DispensingThree Zone CascadeNo Fill Communication

Fueling Fuel Cell Fork Lift10 kW Fuel CellProvided by EPowerSynergies

Air Transportable on C-17 Aircraft

Fork Lift Fueler, Robins

Air Force Base, Georgia

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“Typical” Single Use Emergency Back-Up Power Application

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Solar Powered Back-Up Power System at UTC Power, Windsor, CT

1 kg/day Hydrofiller 15 Production Module

5 kg of Storage at 3000 psi

5 kW Pure-Cell Fuel Cell

3 kW Photo Voltaic Array

Blended Grid and Solar Input

Fully utilizes any available PV Power

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Dual Use Application

Complete 10 kg/day Fueling Station

48 kg of Storage at 6250 psi

5000 psi, 3 Zone Cascade, Fast Fill Dispensing

24 foot Fuel-Cell Para-Transit Bus Operated by GNHTD (10 kg fuel tank)

Install at the Hamden, CT Department of Public Works Maintenance Facility

Includes 10 kW Fuel Cell to Provide Emergency Backup Power to the Facility.

Para-Transit Bus Fueler and Back-Up Power for the Greater New Haven

Transit District

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Para Transit Bus Fueler at the Greater New Haven Transit District

Existing Gasoline Fueling Island

Hamden Maintenance

Facility H2 Station Location

Dispenser

Compression, Storage, and Fuel Cell

Production

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Minimal Cost of Adding Emergency Back-Up Power To A Fueling Station

Adding Significant, Long-Duration Emergency Back-Up Power

$250K of Value for a $75K Increment of Cost Increase

Combined Application Economics H2 Fueling Station

Hydrofiller 175 48 kg of Storage Dispenser

10 kW Emergency Back-Up Fuel Cell

Hydrofiller 15 48 kg of Storage 10 kW Fuel Cell

Combined System

Hydrofiller 175 48 kg of Storage Dispenser 10 kW Fuel Cell

10 kg/day Fueling Capacity

10 kg/day Fueling Capacity

10 kW of Emergency Power for 96 hours

10 kW of Emergency Power for 96 hours

4 ½ days to Refill Storage

60 days to Refill Storage

4 ½ days to Refill Storage

95% Production Unit Utilization

18% Production Unit Utilization

95% Production Unit Utilization

$750K $250K $825K