GHGRP Miscellaneous Combustion

2023 Emissions by Subsector
Emissions Trend by Subsector
2023 Emissions by Facility Location
Number of Reporters and Emissions

Miscellaneous Combustion icon Miscellaneous Combustion comprises facilities that reported GHG emissions from stationary fuel combustion sources only and that are not part of any other sector. This category includes food processing, ethanol production, manufacturing operations, universities, military installations, and any combustion sources not included elsewhere, such as mining operations and hospitals.

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2023 Emissions by Subsector

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Sum of percentages may not equal 100% due to independent rounding.

Emissions Trend by Subsector

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2023 Emissions by Facility Location

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This map shows the locations of direct-emitting facilities. The size of a circle corresponds to the quantity of emissions reported by that facility.

Number of Reporters and Emissions in the Miscellaneous Combustion Sector (as of 8/16/2024)

Miscellaneous Combustion — Greenhouse Gas Emissions Reported to the GHGRP (all emissions values presented in million metric tons CO₂e)
Year	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Number of facilities:
• Food Processing	319	330	337	341	347	342	337	340	340	345	348	351	350
• Ethanol Production	163	167	165	173	176	173	173	174	172	168	164	165	165
• Other Manufacturing	287	292	294	299	292	286	280	295	291	286	280	285	283
• Universities	112	115	114	117	117	115	115	118	118	117	119	123	120
• Military	43	44	43	43	38	34	33	35	36	34	34	36	36
• Other Combustion	161	171	175	184	186	176	169	168	171	171	172	174	176
Total emissions (CO₂e):
• Food Processing	31.2	31.1	31.5	32.1	30.9	30.0	29.5	30.2	30.2	29.5	29.8	30.0	28.7
• Ethanol Production	18.2	17.4	17.1	18.4	18.7	19.3	19.6	19.7	19.3	17.5	18.4	19.1	19.2
• Other Manufacturing	16.9	16.0	16.5	16.9	15.5	15.2	14.7	15.6	15.3	13.9	14.6	14.7	14.1
• Universities	9.5	9.0	9.2	9.4	9.0	8.8	8.6	9.1	8.9	8.3	8.6	8.8	8.3
• Military	2.7	2.6	2.5	2.5	1.9	1.8	1.7	1.9	1.9	1.8	1.9	2.0	1.9
• Other Combustion	11.0	11.2	11.3	11.4	11.5	10.9	10.5	10.6	10.1	9.7	10.2	9.8	9.4
Emissions by greenhouse gas (CO₂e) Food Processing
• Carbon dioxide (CO₂):	31.1	31.0	31.3	31.9	30.8	29.8	29.4	30.1	30.0	29.4	29.6	29.8	28.6
• Methane (CH₄):	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
• Nitrous oxide (N₂O):	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Ethanol Production
• Carbon dioxide (CO₂):	18.2	17.2	17.1	18.3	18.7	19.3	19.5	19.7	19.2	17.5	18.4	19.1	19.1
• Methane (CH₄):	**	**	**	**	**	**	**	**	**	**	**	**	**
• Nitrous oxide (N₂O):	**	0.2	**	**	**	**	**	**	**	**	**	**	**
Other Manufacturing
• Carbon dioxide (CO₂):	16.8	15.9	16.4	16.8	15.5	15.1	14.6	15.5	15.2	13.8	14.6	14.6	14.0
• Methane (CH₄):	**	**	**	**	**	**	**	**	**	**	**	**	**
• Nitrous oxide (N₂O):	0.1	0.1	0.1	0.1	**	**	**	**	**	**	**	**	**
Universities
• Carbon dioxide (CO₂):	9.4	9.0	9.2	9.4	9.0	8.7	8.6	9.1	8.9	8.3	8.6	8.8	8.2
• Methane (CH₄):	**	**	**	**	**	**	**	**	**	**	**	**	**
• Nitrous oxide (N₂O):	**	**	**	**	**	**	**	**	**	**	**	**	**
Military
• Carbon dioxide (CO₂):	2.7	2.6	2.5	2.5	1.9	1.7	1.7	1.9	1.9	1.8	1.9	2.0	1.9
• Methane (CH₄):	**	**	**	**	**	**	**	**	**	**	**	**	**
• Nitrous oxide (N₂O):	**	**	**	**	**	**	**	**	**	**	**	**	**
Other Combustion
• Carbon dioxide (CO₂):	10.9	11.2	11.2	11.4	11.5	10.8	10.5	10.5	10.1	9.7	10.1	9.8	9.4
• Methane (CH₄):	**	**	**	**	**	**	**	**	**	**	**	**	**
• Nitrous oxide (N₂O):	**	**	**	**	**	**	**	**	**	**	**	**	**

Totals may not equal sum of individual GHGs due to independent rounding.

** Total reported emissions are less than 0.05 million metric tons CO₂e.

CO₂ emissions from the combustion of biomass are NOT included in emissions totals provided above.

Other EPA Resources

U.S. Greenhouse Gas Inventory Report