The American Coalition for Ethanol has created this online tool to help ethanol producers and corn producers estimate potential improvements in their carbon footprint, using real-world, up-to-date data.
California Outdated CI Score |
User Specified CI Score |
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166 | (Enter Farm Average Corn Yield) | |
13.2 |
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Penalty for Land Use Change (grams per MJ) | 19.8 | |
Credit for Climate Smart Farming Practices (grams per MJ) | 0 | |
2.882 | Enter ethanol plant ethanol yield (gal/bu) from local ethanol plant |
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Natural Gas Use by Ethanol Plant (Btus per gallon) | 28408 | |
Credit for Capture and Sequestration of CO2 (grams per MJ) | 0 | |
Total | % cleaner than gasoline | |
/ Gallon CI Reduction Value (at $100/ton Carbon Credit) | ||
/ Acre CI Reduction Value (at $100/ton Carbon Credit) |
Acronym Reference Sheet Calculator Sponsorship Opportunities
Carbon Credit $/ton$ | ||||||||||
Corn, Ethanol and Energy Yield | California GREET Default Value |
Megajoules/acre | DoE GREET Default Value |
Megajoules/acre | User Specified Value | Megajoules/acre | Megajoules/bushel | |||
166 | 178.4 |
(Enter Farm Average Corn Yield) |
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2.882 | 2.864 | Enter Ethanol Plant Ethanol yield (gal/bu) (from local Ethanol plant) |
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Ethanol Yield (gallons/acre) | 478 | 38,528 | 511 | 41,147 |
Corn Production Fuels & Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Biodiesel, Renewable Diesel, Ethanol % Blend | Gram GHGs /gal, ft3, kWh | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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4.9 | 1.54 | 7.22 | 2.13 |
12140 |
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0 | 0 | 0 | 0 |
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0 | 0 | 0 | 0 |
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1.7 | 1.66 | 1.28 | 0.33 |
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174.4 | 0.36 | 87 | 0.17 |
80 |
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2.7 | 0.5 | 2.2 | 0.37 |
6965 |
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17 | 0.21 | 69.3 | 0.74 |
439 |
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Corn Production Energy Totals | 4.25 |
3.74 |
Corn Transportation Fuel Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Biodiesel, Renewable Diesel % Blend | g GHGs /bushel | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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10 | 0.73 | 10 | 0.37 |
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40 | 1.77 | 40 | 0.83 |
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Corn Transportation Energy Totals | 2.5 |
1.2 |
Nitrogen Fertilizer Manufacture and Transportation Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Gram GHGs per unit N Fertilizer | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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43.4 | 2 | 49 | 1.71 |
1437 |
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32.2 | 1.8 | 36.3 | 1.66 |
1886 |
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2.8 | 0.3 | 3.2 | 0.24 |
3038 |
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2.8 | 0.1 | 3.2 | 0.12 |
1588 |
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44.8 | 3.5 | 50.5 | 3.27 |
2661 |
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Nitrogen in MAP (11-52-0) Fertilizer (lbs.actual Units N/acre) | 5.6 | 0.1 | 6.3 | 0.29 |
211 |
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Nitrogen in DAP (18-46-0) Fertilizer (lbs. actual N/acre) | 8.4 | 0.2 | 9.5 | 0.5 |
386 |
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Soil CO2 Emissions due to Urea N Fertilizer use | 0 | 1.6 | 0 | 1.07 |
247 |
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Nitrogen Totals | 140.1 | 8.4 |
158 | 7.79 |
Units N/acre | |||||||||
Lbs./bushel |
Annual Precipitation, Enhanced Efficiency N (EEFs), and 4R (Right Form, Right Place Right Time, Right Rate) N Fertilizer Management impacts on Nitrous Oxide
Climate and N Management Factors Influencing N2O Emissions | ||||||||||||||
N2O from Fertilizer and Crop Residue Nitrogen | GREET 2021 Default N2O g/Mj by Fertilizer Source | Precip. (inches) | EEFs | Fertilizer Form | Application Placement | Application Timing | Total N Rate | N2O g/Mj | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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Anhydrous Ammonia (NH3) | 3.09 |
Am.
|
In Soil
|
a |
b |
c |
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Granular Urea | 2.29 |
Am.
|
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Ammonium Nitrate | 0.2 |
50-50
|
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Ammonium Sulfate (AMS) | 0.2 |
Am.
|
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Urea Ammonium Nitrate Solutions | 3.19 |
75-50
|
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Nitrogen in Phosphate Fertilizer (MAP & DAP) | 1 |
Am.
|
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Total N2O from Nitrogen Fertilizer (g/Mj) | 9.97 |
Precip. | C:N Ratio | Total Nitrogen Fertilizer N2O | ||||||||||
Total N2O From Crop Residue (g/Mj) | 3.23 |
< 25 | Total Corn Residue Nitrogen N2O | |||||||||||
Total N2O (g/Mj) | 13.2 |
Total N2O |
Phosphate Fertilizer Manufacture & Transportation Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Gram GHGs per unit P2O5 | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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26.5 | 0.42 | 29.6 | 0.72 |
999 |
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52.6 | 0.55 | 29.6 | 0.59 |
826 |
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0 | 0 | 0 | 0 |
920 |
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Phosphate Totals - Units P2O5 per acre | 79.1 | 0.97 |
59.2 | 1.31 |
Potash Fertilizer Manufacture & Transportation Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Gram GHGs per unit K2O | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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53.6 | 0.47 |
59.9 | 0.36 |
245 |
Lime for Soil pH Correction – Manufacture & Transportation Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Gram GHGs per lb CaCO3 | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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472.2 | 0.058 | 573 | 0.06 |
0.02431 |
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Soil CO2 emissions due to Lime use | 1.38 |
1.37 |
0.52612 |
1.37 |
Herbicide Manufacture & Transportation Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Gram GHGs per lb Herbicide | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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2.14 | 0.52 |
2.3 | 0.47 |
8420 |
Insecticide Manufacture & Transportation Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Gram GHGs per lb Insecticide | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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0.0046 | 0.001 |
0.0049 | 0.0012 |
9938 |
Credit for Soil Organic Carbon SequestrationACE is working with the Department of Energy to include a soil organic credit, which is not currently part of GREET.
Michigan State University Cropland GHG Calculator
Go to this web address: http://surf.kbs.msu.edu 1 Locate and click on your county on the interactive map. 2 Enter your crop. 3 Enter your yield. 4 Enter your tillage method. 5 Record the number under 'Soil' and enter that number in the yellow box below. Your results will be shown in Grams/Megajoule in green. |
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Metric tons CO2/acre | g/MJ | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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Upstream Corn Production Totals | California GREET Default Value 33.3 |
DoE GREET Default Value 29.3 |
User Specified Value |
Ethanol Plant Energy Use (California GREET & DoE GREET 2021 Midwest Average values from Industry Surveys) |
California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Grams /gallon | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
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Natural Gas (btu/gallon) | 28408 | 25.7 |
24628 | 22.2 |
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0.89 | 2.8 |
0.63 | 2.95 |
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28.4 |
25.2 |
Electricity Grid CI Multiplication Factor |
Ethanol Plant Chemical Manufacture & Transportation Emissions (California GREET & DoE GREET 2021 Midwest Average values from Industry Surveys) |
California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Grams /gallon | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
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330 | 0.047 |
330 | 0.047 | ||||||||||
710 | 0.46 | 710 | 0.46 |
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360 | 0.092 | 360 | 0.092 |
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554 | 0.003 | 554 | 0.003 |
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2123 | 0.59 | 2123 | 0.59 |
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2663 | 0.65 | 2663 | 0.65 |
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1270 | 0.17 | 1270 | 0.17 |
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0 | 0 | 0 | 0 |
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Ethanol Plant Chemical Total | 2.01 |
2.01 |
Ethanol Transportation Emissions (California GREET values for Midwest Ethanol to California, GREET 2021 values for Midwest Ethanol, User Specified for Ethanol consumed) |
California GREET Default Value (to California) |
CI (g/MJ) | DoE GREET Default Value (U.S. Average) |
CI (g/MJ) | User Specified Values for Your Specific Destinations |
Grams /gallon | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
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Ethanol Plant to Bulk Terminal | Miles | Miles | % | Miles | % | ||||||||||
0 | 0 | 520 | 13.2% | 0.12 |
% | ||||||||||
1400 | 1.51 | 800 | 78.9% | 0.68 |
% | ||||||||||
80 | 0.44 | 80 | 7.9% | 0.03 |
% | ||||||||||
Bulk Terminal to Refueling Station | |||||||||||||||
90 | 0.49 | 30 | 100% | 0.16 |
100% | ||||||||||
Ethanol Transportation Totals | 2.44 |
1 |
Denaturant Use Emissions | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | Grams /gallon | CI (g/MJ) | CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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2% | 0.9 |
2% | 1.2 |
% | ||||||||||
$/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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Ethanol Plant Energy, Chemicals, Transportation & Den. | 33.78 |
29.4 |
Midwest average GREET Source: RFA Industry Survey (US Dry Mills)
Co-Product Credits | California GREET Default Value |
CI (g/MJ) | DoE GREET Default Value |
CI (g/MJ) | User Specified Value | CI (g/MJ) | CI Change from GREET Default | $/Acre CI Reduction Value |
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4 | -9.2 | 3.25 |
-7.66 |
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1.2 | -4.8 | 1.36 |
-3.2 |
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0.2 | 0 | 0.27 | 0 |
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Co-Product Credit Totals | 5.3 | -14 |
4.9 | -10.86 |
This penalty includes emissions from soil organic carbon losses and N2O emissions.
CI Change from GREET Default | $/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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Indirect Land Use Change | CARB 2015 | 19.8 |
GREET CCLUB 2021 | 7.38 |
User option of GREET default or most recent CCLUB factor of 3.71 |
Based on 2020 USDA report, this value results in an approximately 25 gram credit.
$/Gal.CI Reduction Value |
$/Acre CI Reduction Value |
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This Calculator borrows heavily from the U.S. Department of Energy GREET Model and the GREET 2020 Corn Feedstock Carbon Intensity Calculator