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Emissions Calculators
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Trucking Projects
To quantify estimated emissions reductions for trucking projects that utilize add-on controls or alternative fuels (except for biodiesel)
Smartway FLEET Performance Model
For technical assistance regarding this tool, please contact Annie Kee at 202-343-9218.
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Biodiesel Calculator
To quantify emissions reductions for biodiesel projects
Biodiesel Calculator
For technical assistance with this tool, please contact John Brock at 415-972-3999
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Truck Stop Electrification
Guidance for Quantifying and Using Long Duration Truck Idling Emission Reduction in State Implementation Plans and Transportation Conformity
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Smartway Calculator
The SmartWay calculator is designed to help truck owners compare the costs and estimate the fuel savings associated with various efficiency technologies. The calculator is designed for owners of single trucks as well as multiple-truck fleets.
Smartway Calculator
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Locomotive Idling
Guidance for Quantifying and Using Long Duration Switch Yard Locomotive Idling Emission Reductions in State Implementation Plans
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Exhaust and Crankcase Emission
Exhaust and Crankcase Emission Factors for Nonroad Engine Modeling - Compression-Ignition
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Mobile Inventories
Median Life, Annual Activity, and Load Factor Values for Nonroad Engine Emissions Modeling
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CMAQ Eligibly
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Marketing/Cost Effectiveness
The purpose of this technical analysis is to evaluate the cost effectiveness of retrofitting existing heavy-duty diesel engines to reduce particulate matter (PM). The Analysts evaluated the costs and emissions benefits of retrofitting school buses, freight trucks, and bulldozers with diesel oxidation catalysts (DOCs) and catalyzed diesel particulate filters (CDPFs), two of the most common PM emissions reduction technologies for diesel engines.
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Voluntary Programs-General
Provides the basic processes in place for securing air quality credit for voluntary and innovative emission reduction programs in the context of state implementation plans, emission trading programs, and economic incentive programs."
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SIP-Bundled Measures
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Energy
Clean Energy-Environment Guide to Action Policies, Best Practices, and Action Steps for States Clean Energy-Environment Guide to Action Policies, Best Practices, and Action Steps for States April 2006 EPA Clean Energy-Environment Guide to Action Contents Acknowledgements .
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NMIM
The National Mobile Inventory Model (NMIM) is a free, desktop computer application developed by EPA to help you develop estimates of current and future emission inventories for on-road motor vehicles and nonroad equipment. NMIM uses current versions of MOBILE6 and NONROAD to calculate emission inventories, based on multiple input scenarios that you enter into the system.
You can use NMIM to calculate national, individual state or county inventories
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MOBILE 6
MOBILE6 is an emission factor model for predicting gram per mile emissions of Hydrocarbons (HC), Carbon Monoxide (CO), Nitrogen Oxides (NOx), Carbon Dioxide (CO2), Particulate Matter (PM), and toxics from cars, trucks, and motorcycles under various conditions.
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Other Tools
Airport Ground Support Equipment (GSE) Model
A spreadsheet tool that provides users with a quick analysis of the emission benefits and cost-effectiveness of controlling GSE emissions.
Business Benefits Calculator
Use this tool to estimate the financial, environmental, traffic, parking, and related values of offering employees high quality commuter benefits.
COMMUTER Model
Calculate transportation and emissions benefits associated with selected commuter benefits, incentives, and other voluntary strategies to reduce solo commuting. Emission reductions for VOCs, NOx, CO, air toxics, and CO2 may be calculated.
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Recommended Calculators for Collaborative Projects
- EPA's Retrofit Calculator (widely applicable for add-on controls). The Retrofit Calculator is a custom application that will allow anyone to characterize a fleet and calculate the tons of emission reductions a retrofit project will generate.
- EPA's SmartWay Transportation Partnership's FLEET Performance Model (for trucks only). The Freight Logistics Environmental and Energy Tracking Performance Model (FLEET Performance Model) allows a company to quantify the environmental performance of their fleet operations.
- EPA’s Biodiesel Calculator (for biodiesel only). Designed to compare diesel fuel oil modified with 0 to 100% biologically derived oils.
Other Calculator Information of Interest
- The Diesel Emissions Quantifier (Quantifier) is a tool to help fleet owners, school districts, municipalities, contractors, port authorities, and others estimate cost effectiveness and environmental impact of emission reduction technologies that have been added to vehicles and equipment. Estimates are made using specific information about a fleet, such as miles driven, fuel mileage, and others. This site will also help you to prepare and submit your diesel emissions data to EPA.
- National Biodiesel Board emissions calculator. It gives a general idea of emissions reductions as a percentage and in lbs based on the amount of fuel used and the percent BD blend.
- The British Columbia Biofleet Project's Biodiesel Calculator
- Argonne National Laboratory's GREET Model. The GREET (Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation) Model calculates fuel-cycle energy consumption, greenhouse gas emissions, and five criteria pollutants in different transportation fuel/technology combinations. Developed by Argonne National Laboratory as a Microsoft Excel spreadsheet model, it allows researchers to evaluate various engine and fuel combinations. GREET is in the public domain and is available free of charge. For a given vehicle and fuel system, GREET separately calculates the
following:
- Consumption of total energy (energy in non-renewable and renewable sources), fossil fuels (petroleum, natural gas, and coal), and petroleum
- Emissions of CO2-equivalent greenhouse gases - primarily carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)
- Emissions of five criteria pollutants: volatile organic compounds (VOCs), carbon monoxide (CO), nitrogen oxide (NOx), particulate matter with size smaller than 10 micron (PM10), and sulfur oxides (SOx)
- EPA's Biodiesel Emissions Program
- DOE's Custom Alternative Fuels Comparison Chart
- PM Calculator will calculate controlled emissions for filterable PM2.5 and filterable PM10 for point sources only.
- Pace E-CALC'99 Emissions Calculator. Pace is a tool to calculate gasoline emissions such as VOCs, Toxics and NOx based on fuel properties.
- EPA's School Bus Emissions Calculator
- MOBILE6 Vehicle Emission Modeling Software. MOBILE6 is an emission factor model for predicting gram per mile emissions of Hydrocarbons (HC), Carbon Monoxide (CO), Nitrogen Oxides (NOx), Carbon Dioxide (CO2), Particulate Matter (PM), and toxics from cars, trucks, and motorcycles under various conditions.
- California Air Resources Board (CARB) Emissions Inventory Data
- EPA's AirData: Access to Air Pollution Data. The AirData Web site gives you access to air pollution data for the entire United States. Want to know the highest ozone level measured in your state last year? Ever wonder where air pollution monitoring sites are located? Are there sources of air pollution in your town? You can find out here! AirData produces reports and maps of air pollution data based on criteria that you specify.
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