Investor Presentaiton

Fuel Cells • Types: . • Fuels Proton Exchange Membrane (PEM) polymer electrolyte membrane - precious metals most common - vehicles Alkaline Fuel Cell (AFC) potassium hydroxide electrolyte solution most efficient - sensitive to carbon dioxide Molton Carbonate Fuel Cell (MCFC) • high temp salt mixture suspended in an inert ceramic matrix non-precious metals for electrolyte cathode and anode do NOT require external reformer ; directly convert hydrocarbons (natural gas, biogas) Solid Oxide Fuel Cell (SOFC) solid ceramic electrolyte - high temperatures non-precious metals for electrolyte cathode and anode do NOT require external reformer, can handle sulfur (coal - synthesis gas) Primary Hydrogen - Secondary Natural Gas, Biogas, Synthesis Gas (Steam Reformation) Emissions • • - Primary - H2O Secondary - CO2, Sulfur Combined Heat and Power - utilize waste heat Heating Installation Waste Heat Hydrogen Fuel Cell Oxygen /Air Water DC Power Heat Supply Inverter AC Power Fuel Cells used in CHP Applications

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