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WASHINGTON, DC, US, January 11, 2006 (Refocus
Weekly)
Renewable energy facilities emit 11.4 megatonne
of carbon dioxide each year in the United States, according to
government data.
Petroleum is the leading source of GHG emissions from energy and
industry sources, according to the Department of Energy. Oil emitted
2,592 Mt in 2004, compared with 2,180 Mt in 1990.
Combustion of coal for energy applications emitted 2,090 Mt in 2004,
compared with 1,784 Mt in 1990, while natural gas emitted 1,203 Mt
of CO2 in 2004 compared with 1,027 Mt in 1990, notes the DOE report,
‘Emissions of Greenhouse Gases in the United States 2004.’
For all energy and industry sources, national GHG emissions in 2004
were 5,900 Mt, of which the residential sector emitted 1,212 Mt, the
commercial sector 1,024 Mt, the industrial sector 1,730 Mt and the
transportation sector was 1,934 Mt.
Non-carbon renewable fuels are examined in the report, including
wind, solar, hydro and biomass. “Both geothermal power and waste
combustion produce some carbon dioxide emissions,” although
wood-fired generation is considered to be carbon-neutral “so long as
it does not lead to deforestation.”
All forms of renewables emitted 11.4 Mt in 2004, down from 11.7 Mt
in 2003 and a high of 13 Mt in 2002. In 1990, emissions were 6.2 Mt,
which rose to 10.3 MT in 1996 and remained relatively static until
2000.
Among the energy subtotal of 5,900 Mt are 114 Mt from non-fuel use
emissions and 217 Mt from non-fuel use sequestration. Natural gas
flaring emitted 6 Mt, down from 9 Mt in 1990, while CO2 in natural
gas was 18 Mt and 45 Mt from cement production. Waste combustion was
responsible for 7.8 Mt of CO2 emissions in 2004.
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