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Greenhouse Gas Reporting Program

Metals

Metals icon.The 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. Data for magnesium production were reported beginning in 2011 while data for all other metal production were reported beginning in 2010. 

Metals Sector — Greenhouse Gas Emissions Reported to the GHGRP
(all emissions values presented in million metric tons CO2e)
  2010 2011 2012
Number of facilities: 269 297 297
Total emissions (CO2e): 99 112 107
Emissions by greenhouse
   gas (CO2e)

  • Carbon dioxide (CO2):
  • Methane (CH4):
  • Nitrous oxide (N2O):
  • Hydrofluorocarbons (HFCs):
  • Perfluorocarbons (PFCs):
  • Sulfur hexafluoride (SF6):


97
**
**
**
1.6
NR


108
**
**
**
2.9
1.5


103
**
**
**
2.5
1.3

Totals may not equal sum of individual GHGs due to independent rounding.
NR means that this value was not reported for the 2010 reporting year.
** Total reported emissions are less than 0.05 million metric tons CO2e.

Process emissions from magnesium production (sulfur hexafluoride) were reported beginning in 2011. These emissions are included in the table above. Total emissions from magnesium production were 1.9 MMT CO2e in 2011.

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

Number of reporters and 2012 emissions (CO2e) per metals industry subsector
Industry Sector 2012 Number of Reporters 2012 Emissions (million metric tons CO2e)
  • Aluminum Production
  • Ferroalloy Production
  • Iron and Steel Production
  • Lead Production
  • Magnesium Production
  • Zinc Production
  • Other Metals
10
10
125
14
10
6
122
6.5
2.4
84
1.1
1.7
1.0
9.7

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