• GREET Fleet Footprint Calculator 1.1a (402 kB xls)
• Online tool at : http://energychoicemodel.com/fleetcalculator/
• User Guide for the GREET Fleet Footprint Calculator 1.1 (64 kB pdf)

Argonne National Laboratory and the Great Plains Institute worked together to produce the online version of the Fleet Footprint Calculator. This tool allows the user to:

• Calculate the petroleum and greenhouse gas footprint of your fleet
• Compare different alternative fuels and vehicle technologies for a future medium-duty, heavy-duty or off-road vehicle purchase

» Updated results to match GREET 1.8d - Highlights include updated results for: petroleum-based fuels using new data on refinery efficiencies, corn ethanol based on land use change and a recent survey of ethanol production plants, cellulosic ethanol based on revised farming requirements and plant design, soybean biodiesel based on revised farming requirements and conversion estimates, and landfill gas to CNG and LNG based on a new Argonne study

» Provided regional generation mixes based on the EIA’s Annual Energy Outlook 2010 – Electricity Market Model Supply Regions

» Moved Landfill Gas simulation from its own column (separate from CNG and LNG) to a feedstock option in Table 6 for both CNG and LNG, as the GREET 1.8d results now allow to do both CNG and LNG from landfill gas

» For more details on these and other updates, please download and read the following document: GREET Fleet Footprint Calculator Version History ( 67 kB pdf)

The Department of Energy's Clean Cities Program has enlisted the expertise of Argonne to assist in measuring the petroleum displacement and greenhouse gas (GHG) emissions of medium- and heavy-duty vehicles and off-road equipment. Argonne has developed the GREET Fleet Footprint Calculator for Clean Cities stakeholders to estimate these values using simple spreadsheet inputs.

Based on GREET. The basis of this calculator is Argonne's Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) fuel-cycle model which is used to generate necessary petroleum use and GHG emission co-efficients of key fuel production pathways and combustion fuel types.

Well-to-Wheels Results. Fleet managers can quickly insert their data to generate petroleum use and GHG emissions on a well-to-wheels (WTW) basis. A WTW analysis can be divided into two stages: well-to-pump (WTP) and pump-to-wheels (PTW). The WTP stage starts with the fuel feedstock recovery, followed by fuel production, and ends with the fuel available at the pump, while the PTW stage represents the vehicle's operation activities. It is important to examine transportation fuels and technologies on a WTW basis in order to properly compare alternatives, as activities upstream of vehicle operation can use significant amounts of energy and subsequently produce a large amount of emissions.