Impactt5A Model: Enhancements and Modifications since December 1994 with Special Reference to the Effect of Tripled-Fuel-Economy Vehicles on Fuel-Cycle Energy and Emissions

Version 5A of the Integrated Market Penetration and Anticipated Cost of Transportation Technologies (IMPACTT5A) model is a spreadsheet-based set of algorithms that calculates the effects of advanced-technology vehicles on baseline fuel use and emissions. Outputs of this Argonne National Laboratory-developed model include estimates of (1) energy use and emissions attributable to conventional-technology vehicles under a baseline scenario and (2) energy use and emissions attributable to advanced- and conventional-technology vehicles under an alternative market-penetration scenario. Enhancements to IMPACIT made after its initial documentation in December 1994 have enabled it to deal with a wide range of fuel and propulsion system technologies included in Argonne's GREET model in a somewhat modified three-phased approach. Vehicle stocks are still projected in the largely unchanged STOCK module. Vehicle-miles traveled, fuel use, and oil displacement by advanced-technology vehicles are projected in an updated USAGE module. Now, both modules can incorporate vehicle efficiency and fuel share profiles consistent with those of the Partnership for a New Generation of Vehicles. Finally, fuel-cycle emissions of carbon monoxide, volatile organic compounds, nitrogen oxides, toxics, and greenhouse gases are computed in the EMISSIONS module via an interface with the GREET model that was developed specifically to perform such calculations. Because of this interface, results are now more broadly informative than were results from earlier versions of IMPACTT.

  • Record URL:
  • Corporate Authors:

    Argonne National Laboratories

    Lemont, IL  United States 

    Department of Energy

    1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Publication Date: 1994-12


  • English

Media Info

  • Media Type: Web
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 85p

Subject/Index Terms

Filing Info

  • Accession Number: 01103235
  • Record Type: Publication
  • Report/Paper Numbers: ANL-ESD-TM-154
  • Contract Numbers: W-31-109-Eng-38
  • Files: NTL, TRIS
  • Created Date: Jun 24 2008 7:45AM