in News Departments > New & Noteworthy
print the content item

Total U.S. greenhouse gas (GHG) emissions were 7,282 million metric tons carbon dioxide equivalent (MMTCO 2e) in 2007 - an increase of 1.4% from the 2006 level, according to "Emissions of Greenhouse Gases in the United States 2007," a report released by the Energy Information Administration. Since 1990, U.S. GHG emissions have grown at an average annual rate of 0.9%.

U.S. GHG emissions per unit of gross domestic product (GDP) fell from 636 metric tons per million 2000 constant dollars of GDP (MMTCO 2e/million dollars GDP) in 2006 to 632 MMTCO 2e /million dollars GDP in 2007 - a decline of 0.6%. Since 1990, the annual average decline in GHG intensity has been 1.9%.

Total estimated U.S. GHG emissions in 2007 consisted of 6,022 million metric tons of CO2 (82.6% of total emissions); 700 MMTCO 2e of methane (9.6% of total emissions); 384 MMTCO 2e of nitrous oxide (5.3% of total emissions); and 177 MMTCO 2e of hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulfur hexafluoride (SF6) (2.4% of total emissions).

CO2 emissions from energy consumption and industrial processes, which had risen at an average annual rate of 1.1% per year from 1990 to 2006, increased by 1.3% in 2007.

Unfavorable weather patterns - where both heating and cooling degree-days were higher in 2007 than 2006 - and an increase in the carbon intensity of electricity generation - driven by decreased availability of hydropower - both contributed to higher energy-related CO2 emissions in 2007.

Methane emissions increased by 1.9%, while nitrous oxide emissions rose by 2.2%. Emissions of HFCs, PFCs and SF6 - a group labeled collectively as high-GWP gases because of their high heat-trapping capabilities - increased by 3.3%.

For more information, visit eia.doe.gov.

SOURCE: Energy Information Administration



Trachte Inc._id1770
Latest Top Stories

Utility-Scale Wind And Solar Keep Getting Cheaper

A new study measures the levelized cost of energy from various technologies and suggests that the costs of utility-scale wind and solar power are catching up with those of traditional sources, even without subsidies.


The Song Remains The Same: Ontario Seeks More Science Before Lifting Offshore Ban

The Ontario government says the nearly four-year-old offshore wind moratorium will remain in place until the province fully understands the technology’s impact on the environment.


Why States Should Adopt A Renewable Portfolio Standard

A new study analyzes the potential benefits of state renewable energy mandates, as well as recommends what such policies should include.


Sen. Reid Vows To Bring Wind PTC To A Vote By Year's End

Nevada's senior senator provides some encouragement to wind industry advocates during his annual Clean Energy Summit.


Steadily, Wind Turbine OEMs Resume R&D Investment

An increased commitment to research and development will likely lead to wind energy innovation - not to mention a likely increase in patent-protected technology.

Renewable NRG_id1934
Canwea_id1984
UnitedEquip_id1995
Future Energy_id2008