Documentation

Fertilizer & Fuel Assumptions

Fertilizer cost is calculated using recent price data published in the Iowa Production Cost Report by the USDA Market News Service. Cost per ton of Anhydrous ammonia (82% N) is converted to cost per pound of Nitrogen (N).

Fuel cost is calculated using price data published by the U.S. Energy Information Administration. Diesel, gasoline, and electricity prices are last year's average, while propane and heating oil prices are updated weekly during the heating season (Oct - Mar).

Greenhouse gas emissions of Carbon Dioxide (CO2), Methane (CH4), Nitrous Oxide (N2O), and Carbon Dioxide Equivalent (CO2e) are calculated using published conversion factors for each fuel.

Nitrogen (N) in the form of Anhydrous Ammonia Fertilizer
Cost Updated Data Period Source
$0.292683 / lb November 21, 2018 Every two weeks USDA Market News Service: Iowa Production Cost Report
BTU / lb CO2 (kg) / lb CH4 (kg) / lb N2O (kg) / lb CO2e (kg) / lb
14,850
(Source: Iowa State Publication PM2089I.pdf)
1.17782
(Source: Industrial Efficiency Technology Database)
0.0
(Source: n/a)
0.0
(Source: n/a)
1.17782
(Source: Industrial Efficiency Technology Database)
Potash (Red) (0-0-60) Fertilizer
Cost Updated Data Period Source
$0.182145 / lb November 21, 2018 Every two weeks USDA Market News Service: Iowa Production Cost Report
BTU / lb CO2 (kg) / lb CH4 (kg) / lb N2O (kg) / lb CO2e (kg) / lb
1,075
(Source: Iowa State Publication PM2089I.pdf)
0.0
(Source: n/a)
0.0
(Source: n/a)
0.0
(Source: n/a)
0.0
(Source: n/a)
MAP (Monoammonium Phosphate 11%N 52%P) Fertilizer
Cost Updated Data Period Source
$0.263785 / lb November 21, 2018 Every two weeks USDA Market News Service: Iowa Production Cost Report
BTU / lb CO2 (kg) / lb CH4 (kg) / lb N2O (kg) / lb CO2e (kg) / lb
-6,062
(Source: Iowa State Publication PM2089I.pdf)
0.07489
(Source: Industrial Efficiency Technology Database)
0.0
(Source: n/a)
0.0
(Source: n/a)
0.07489
(Source: Industrial Efficiency Technology Database)
Midwest No 2 Diesel Retail Prices, Annual
Cost Updated Data Period Source
$3.11 / gal January 07, 2019 2018 EIA.gov | OpenData Link
BTU / gal CO2 (kg) / gal CH4 (kg) / gal N2O (kg) / gal CO2e (kg) / gal
137,381
(Source: U.S. EIA)
10.21
(Source: U.S. EPA)
0.00026
(Source: U.S. EIA)
0.00144
(Source: U.S. EIA)
10.32348
(Source: IPCC)
Iowa No. 2 Heating Oil Residential Price, Weekly
Cost Updated Data Period Source
$2.46 / gal March 27, 2019 20190325 EIA.gov | OpenData Link
BTU / gal CO2 (kg) / gal CH4 (kg) / gal N2O (kg) / gal CO2e (kg) / gal
138,500
(Source: U.S. EIA)
10.21
(Source: U.S. EPA)
0.00008
(Source: U.S. EPA)
0.00041
(Source: U.S. EPA)
10.24409
(Source: IPCC)
Midwest Regular All Formulations Retail Gasoline Prices, Annual
Cost Updated Data Period Source
$2.596 / gal January 07, 2019 2018 EIA.gov | OpenData Link
BTU / gal CO2 (kg) / gal CH4 (kg) / gal N2O (kg) / gal CO2e (kg) / gal
120,476
(Source: U.S. EIA)
8.78
(Source: U.S. EPA)
0.00022
(Source: U.S. EIA)
0.00126
(Source: U.S. EIA)
8.87706
(Source: IPCC)
Iowa Propane Residential Price, Weekly
Cost Updated Data Period Source
$1.316 / gal March 27, 2019 20190325 EIA.gov | OpenData Link
BTU / gal CO2 (kg) / gal CH4 (kg) / gal N2O (kg) / gal CO2e (kg) / gal
91,333
(Source: U.S. EIA)
5.74
(Source: U.S. EIA)
0.00005
(Source: U.S. EPA)
0.00027
(Source: U.S. EPA)
5.76165
(Source: IPCC)
Average retail price of electricity : Iowa : residential : annual
Cost Updated Data Period Source
$0.1267 / kwh March 01, 2019 2018 EIA.gov | OpenData Link
BTU / kwh CO2 (kg) / kwh CH4 (kg) / kwh N2O (kg) / kwh CO2e (kg) / kwh
3,414
(Source: U.S. Department of Energy)
0.6464
(Source: U.S. EPA eGrid201)
0.000011004
(Source: U.S. EPA eGrid201)
0.000012579
(Source: U.S. EPA eGrid201)
0.649993667
(Source: IPCC)