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  2. Greenhouse Gas Reporting Program (GHGRP)
  3. Sector Data Highlights

GHGRP Metals

On this page:
  • 2023 Emissions by Subsector
  • Emissions Trends by Subsector
  • 2023 Emissions by Facility Location
  • Number of Reporters and Emissions

Metals IconThe metals sector consists of metal production facilities that smelt, refine, and/or cast ferrous and nonferrous metals, including primary aluminum, ferroalloy, iron and steel, lead, magnesium, and zinc, from ore, pig, or scrap using electrometallurgical and other methods. The sector also includes foundries and any other metal production facility operating under NAICS codes beginning with 331 (Primary Metal Manufacturing). Primary aluminum, ferroalloy, iron and steel, lead, magnesium, and zinc production facilities report GHG emissions from metal smelting, refining, and/or casting activities, as well as from stationary fuel combustion sources. All other metal production facilities report only the GHG emissions from stationary fuel combustion sources.

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2023 Emissions by Subsector

 
Click on legend items below the chart to show or hide subsectors

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

Emissions Trend by Subsector

 
Click on legend items below the chart to show or hide subsectors

2023 Emissions by Facility Location

 
 
 
 

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 Metals Sector (as of 8/16/2024)

Metals Sector - Greenhouse Gas Emissions Reported to the GHGRP
(all emissions values presented in million metric tons CO2e)
Metric2011201220132014201520162017201820192020202120222023
Number of Facilities:299301303306303304298306300296300296295
Total emissions (CO2e):112.0106.8106.9104.591.488.388.992.289.978.082.476.778.8
Emissions by greenhouse gas (CO2e)
• Carbon dioxide (CO2):107.0102.5102.8101.188.686.087.089.887.775.880.675.277.6
• Methane (CH4):**************************
• Nitrous oxide (N2O):**************************
• Hydrofluorocarbons (HFCs):****0.10.10.10.10.10.10.10.1******
• Perfluorocarbons
(PFCs): 
3.52.93.02.52.01.41.01.51.51.51.00.80.5
• Sulfur hexafluoride
(SF6):
1.51.31.00.70.70.80.70.70.60.50.70.70.7

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

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

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

Number of reporters and 2023 emissions (CO2e) per metals industry subsector
Industry Sector2023 Number of Reporters2023 Emissions (million metric tons CO2e)
Aluminum Production71.9
Ferroalloy Production91.5
Iron and Steel Production12164.3
Lead Production110.9
Magnesium Production80.8
Zinc Production60.6
Other Metals1338.9

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Greenhouse Gas Reporting Program (GHGRP)

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Last updated on January 20, 2026
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