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GREET Model

Project Summary

Full Title: Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) Model
Project ID: 84
Principal Investigator: Michael Wang
Keywords: Well-to-wheels (WTW); emissions; greenhouse gases (GHG); fuel cell vehicles (FCV)

Purpose

GREET supports Milestone 24 of the Systems Analysis activity of the DOE Hydrogen Program: Complete baseline economic, energy efficiency, and environmental targets for fossil, nuclear and renewable hydrogen production and delivery technologies. GREET also supports the 3rd objective listed in the DOE Hydrogen Program’s Systems Analysis Plan: Well-to-Wheels Analysis: Conduct on-going, integrated well-to-wheels analysis of hydrogen pathways for introducing hydrogen as a transportation fuel. The analysis will examine possible trade-offs between the individual short-term and long-term goals of the fuel program and the vehicle program and between energy sources.

Performer

Principal Investigator: Michael Wang
Organization:Argonne National Laboratory (ANL)
Address:ESD362/G216, 9700 South Cass Avenue
Argonne, IL 60439
Telephone:630-252-2819
Email:mqwang@anl.gov

Sponsor(s)

Name:Fred Joseck
Organization:Department of Energy
Telephone:202-586-7932
Email:Fred.Joseck@ee.doe.gov

Period of Performance

Start: October 2001

Project Description

Type of Project: Model
Category: Well-to-Wheels
Objectives: Calculate and compare well-to-wheels energy consumption, GHG and criteria emissions (VOC, CO, NOx, PM10, SOx, CH4, N2O, CO2, GHGs) for various advanced vehicle technology and fuel combinations.
Technologies Modeled: Various combinations of vehicles and fuels: Vehicles: conventional, compression ignition direct injection (CIDI), spark ignition direct injection, compressed natural gas, liquefied natural gas, liquefied petroleum gas, dedicated methanol, dedicated ethanol, grid-connected and grid-independent hybrid electric, CIDI hybrid electric, electric, fuel cell Fuels: conventional gasoline, conventional diesel, M90, E90 from corn, compressed natural gas, liquefied natural gas, liquefied petroleum gas, methanol, ethanol, reformulated gasoline (FRFG2, CARFG2), reformulated diesel, hydrogen, electricity, biodiesel (B20), Fischer Tropsch diesel (FT100), dimethyl ether
User Inputs: Near-term vs. long-term technology, vehicle type (light-duty), parameters for simulating petroleum-based fuels, parameters for simulating natural gas-based fuels, parameters for simulating ethanol, parameters for simulating electric generation, parameters for simulating vehicle operation, assumptions for upstream activities, fuel economy and emissions rates of conventional vehicles, fuel economy and emissions rates of alternative-fueled and advanced vehicles, share of combustion processes used in each stage of fuel production/delivery, energy efficiency and urban emissions share of each stage of fuel production/delivery. User can enter unique values.
Methodology/Approach: Linear algebraic calculations; Monte Carlo estimates of variations
Hardware/Software Requirements: Excel
User Interface: Executable file.
Outputs: Well-to-wheels energy consumption for total energy, petroleum, coal and natural gas; GHG and criteria emissions (VOC, CO, NOx, PM10, SOx, CH4, N2O, CO2, GHGs)
Assumptions Inherent in Model: Fuel specs, emission factors, carbon and sulfur ratios
Milestones Supported:
  • Milestone 24 of the Systems Analysis activity of the DOE Hydrogen Program: Complete baseline economic, energy efficiency, and environmental targets for fossil, nuclear and renewable hydrogen production and delivery technologies.
    • Organization: DOE Hydrogen Program
    • Completion Date: September 2005
Timeframe Studied: 1990 - 2020

Products/Deliverables

 

  • Description: GREET Model Version 1.8b
    http://www.transportation.anl.gov/modeling_simulation/GREET/index.html
    Publication Date: September 2008

  • Description: FY 2007 Progress Report
    Publication Title: FY 2007 DOE Hydrogen Program Progress Report
    Article/Abstract Title: VIII.7 Updated Well-to-Wheels Analysis of Energy and Emissions IMpacts of Fuel-Cell Vehciles
    Page number(s): 1212
    Publisher: U.S. Department of Energy
    Author Name(s): Wang, M.; Wu, Y.
    (PDF 693 KB) Download Adobe Reader.
    Publication Date: November 2007

  • Description: GREET Model Version 2.7
    http://www.transportation.anl.gov/modeling_simulation/GREET/index.html
    Publication Date: August 2007

  • Description: Presentation
    Publication Title: WTT/WTW Comparison in WP2: Benchmarking Energy and Emissions Results of GREET and E3Database
    Publication Notes: HyWays-IPHE Tech Meeting
    Author Name(s): Wang, M., Wu, Y., Stiller, C.
    Publication Date: July 2007

  • Description: Presentation
    Publication Title: Life-Cycle Analysis of Vehicle/Fuel Systems with the GREET Model
    Publication Notes: IEA/IPHE Workshop
    Author Name(s): Wu, Y.; Wang, M.
    Publication Date: April 2007

  • Description: Development and Use of GREET 1.6 Fuel-Cycle Model for Transportation Fuels and Vehicle Technologies
    Publication Title: Development and Use of GREET 1.6 Fuel-Cycle Model for Transportation Fuels and Vehicle Technologies
    Publisher: Argonne National Laboratory
    Author Name(s): Wang, M.Q.
    (PDF 692 KB) Download Adobe Reader.
    Publication Date: June 2001


Date Last Updated: 03/16/2008