Fuel Combustion Emissions Calculator
Fuel type and annual burn in. NOx, CO, SO2, PM, and CO2 tonnage out, AP-42 factors cited.
Free fuel combustion emissions planning screen for local heat-input arithmetic. Enter annual natural gas, propane, diesel, fuel oil, or bituminous coal use to estimate CO2, NOx, SOx, PM, MMBtu, CO2-only metric tons, and a local cost-context band. The app includes AP-42, GHGRP, permit, source-test, CEMS, fuel-analysis, and qualified-review warnings because the local rows are not row-verified regulatory factors.
Move reviewed annual pollutant totals into the facility inventory screen after method checks
Facility Emissions Inventory →Screen diesel generator fuel, CO2, and source-review flags before selecting approved factors
Emergency Generator Emissions Calculator →Compare tune-up fuel savings before deciding whether emissions should be recalculated
Boiler Efficiency Calculator →Use the AP-42 lookup as a source pointer before relying on any factor row
AP-42 Emission Factor Lookup →How It Works
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Select a Local Fuel Row
Choose natural gas, propane, No. 2 fuel oil, diesel, or bituminous coal. Treat the row as a planning assumption until the current source document and source category are checked.
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Enter Annual Fuel Use
Enter annual use in the app unit, such as MCF, therms, CCF, gallons, or tons. The app converts fuel use to local MMBtu using its heat-content row.
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Add Sources as Needed
Add separate rows for major fuel-use records so the worksheet can show a local total and a source-by-source CO2 share.
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Review Screening Totals
Review local CO2, NOx, SOx, PM, MMBtu, and CO2-only metric tons. The app does not calculate CO, VOC, HAP, CH4, N2O, PM10, PM2.5, or control-device effects.
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Read the Source Boundary
Check the warning block and source pointers before using the output outside early planning.
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Export a Planning Record
Export the inputs, outputs, warnings, assumptions, and source pointers for internal review. Do not treat the export as permit-ready evidence.
Built For
- Environmental managers building an early fuel-use worksheet before method review
- Facility engineers checking the order of magnitude for combustion-source emissions
- Consultants gathering planning inputs before selecting AP-42, source-test, CEMS, material-balance, or permit methods
- Plant staff comparing fuel-use records before sending the data for environmental review
- Energy managers estimating whether fuel savings may need a later emissions-method update
- Sustainability teams flagging Scope 1 combustion data that still needs GHG method review
Assumptions
- Annual fuel use is converted to MMBtu using local heat-content rows.
- Local output rows are CO2, NOx, SOx, and PM only.
- CO2e is CO2-only and does not include CH4 or N2O.
- The app does not model control devices, startup, shutdown, malfunction, or permit averaging periods.
- The local cost-context band is not a regulatory carbon price.
Limitations
- Local rows are not reconciled to current AP-42 tables, factor ratings, or chapter notes.
- Does not calculate CO, VOC, HAPs, CH4, N2O, PM10, PM2.5, or biogenic CO2 treatment.
- Does not choose a GHGRP tier, GWP basis, state inventory method, or permit method.
- Does not determine Title V, PSD, NSR, NNSR, synthetic-minor, HAP, or GHG applicability.
- Not suitable for compliance demonstrations, permit applications, or certified reports without approved methods and qualified review.
References
- EPA AP-42 Compilation of Air Emissions Factors from Stationary Sources.
- EPA AP-42, Fifth Edition, Volume I, Chapter 1 - External Combustion Sources.
- EPA GHG Emission Factors Hub.
- 40 CFR Part 98, Subpart C - General Stationary Fuel Combustion Sources.
- EPA Report on the Social Cost of Greenhouse Gases.