Gas

Source

Key Opportunities

Estimated Emissions Reduction Potential (Mt CO2-eq for 2030)

 

Soil management

Precision agriculture, cropping system models, controlled-release fertilizers, soil conservation practices

36.2

SF6

Aluminum production

Reduced anode effects

0.8

 

Magnesium production

Improved process management, SF6 substitutes

0.9

 

Electric power

Improved gas handling, recycling, new equipment

3.6

 

Semiconductors

Improved process management, thermal destruction, alternative chemicals

1.5

HFC-23

 

Improved process management, thermal destruction

2.9

Ozone-depleting substance substitutes

 

Improved gas management, alternative chemicals, banning of nonessential uses

84.9

SOURCES: Nonagricultural technical potential estimates from EPA (2006) and EPA’s legislative analyses. Estimates assume a price of $60/ton CO2-eq. Agricultural estimates are from the results of Baker et al. (2009) at a $50 CO2-eq price. Description of emissions-reduction opportunities from EPA (see http://gcep.stanford.edu/pdfs/3KC3dzpRALy3cHpkGrwJCA/Paul_Gunning_Non-CO2.pdf).

Methane Emissions from Energy and Landfill Sources

Methane (CH4) is emitted from leaks or venting from oil and gas systems, landfills, and coal mining. Reducing these emissions is cost-effective in many cases, due to the market value of the recovered gas.6 Cost-effective CH4 emission-reduction technologies and practices (e.g., leak detection and reduction activities) already exist, but there is

6

If one uses the captured methane as a fuel, and this displaces the use of more carbon-intensive fuels, it is a net gain in terms of GHG emissions.



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