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Alternative Fuel Vehicles Impact on Climate Change Emissions

Explore the impact of alternative fuels on climate change emissions from light-duty vehicles. Analysis includes well-to-wheels assessment, technology improvements, marketability issues, and emissions benefits of electricity, ethanol, CNG, LPG, and plug-in hybrid vehicles. Discusses the necessity of dedicated fuel vehicles for emission benefits and the potential for substantial reductions in emissions through wider adoption.

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Alternative Fuel Vehicles Impact on Climate Change Emissions

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  1. Public WorkshopTechnology Assessment on Climate Change Emissions from Light-Duty Vehicles Discussion of Results from TIAX Study April 20, 2004 Sacramento, CA

  2. Alternative Fuel Vehicles • Impact on climate change emissions • Well-to-wheels analysis • Cost and marketability issues • Technology improvements identified for conventional vehicles not included

  3. Alternative Fuels • Electricity • Ethanol • Compressed Natural Gas • Liquid Petroleum Gas • Plug-in hybrid

  4. Electricity • Large emissions benefit ~ 50 percent • Marketability and cost issues • Small city and neighborhood vehicles more viable but have smaller emission benefits

  5. Ethanol • 35 percent reduction relative to gasoline • Current flexible fuel vehicles use gasoline due to lack of infrastructure • Dedicated fuel vehicles necessary to ensure emission benefits

  6. Compressed Natural Gas • Emissions benefit ~ 30 percent • Modest refueling infrastructure • Home refueling key to larger scale commercialization

  7. Liquified Petroleum Gas • 30 percent reduction relative to gasoline • Fleet use in California: 33,000 vehicles • central refueling • Most cost-effective alternative fuel

  8. Plug-in HEV • ~50 percent reduction relative to gasoline • 20 - mile all-electric range

  9. CO2 Comparison

  10. Incremental Cost

  11. Adjustment Factors

  12. Staff Conclusions • Alternative fueled vehicles available in limited quantities • Substantial reductions in climate change emissions possible from wider use • Incremental costs and fuel availability hurdles to commercialization

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