U.S. ENERGY INFORMATION ADMINISTRATION
U.S. Greenhouse Gas Emissions Growth Lower than Average in 2005
Total U.S. greenhouse gas (GHG) emissions were 7,147.2 million metric tons carbon dioxide equivalent (MMTCO2e) in 2005, an increase of 0.6 percent from the 2004 level according to Emissions of Greenhouse Gases in the United States 2005, a report released today by the Energy Information Administration (EIA). Since 1990, GHG emissions have grown at an average annual rate of 1.0 percent.
U.S. GHG emissions per unit of Gross Domestic Product (GDP), or “U.S. GHG-intensity,” fell from 664 metric tons per million 2000 constant dollars of GDP (MTCO2e/$Million GDP) in 2004 to 647 MTCO2e /$Million GDP in 2005, a decline of 2.5 percent. Since 1990, the annual average decline in GHG-intensity has been 1.9 percent.
Total estimated U.S. GHG emissions in 2005 consisted of 6,008.6 million metric tons of carbon dioxide (84.1 percent of total emissions), 611.9 MMTCO2e of methane (8.6 percent of total emissions), 366.6 MMTCO2e of nitrous oxide (5.1 percent of total emissions), and 160.2 MMTCO2e of hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulfur hexafluoride (SF6) (2.2 percent of total emissions).
The 2005 emissions increase is well below the rate of economic growth of 3.2 percent and below the average annual growth rate of 1.0 percent in greenhouse gas emissions since 1990. Emissions of carbon dioxide from energy consumption and industrial processes, which have risen at an average annual rate of 1.2 percent per year since 1990, grew by only 0.3 percent in 2005. Slow growth in carbon dioxide emissions from 2004 to 2005 can be attributed mainly to higher energy prices that suppressed energy demand, low or negative growth in several energy-intensive industries, and weather-related disruptions in the energy infrastructure along the Gulf Coast that shut down both petroleum and natural gas operations. Emissions of methane increased by 0.9 percent, while emissions of nitrous oxide rose by 1.9 percent. Emissions of HFCs, PFCs, and SF6, a group labeled collectively as “high-GWP gases” because their high heat trapping capabilities, rose by 7.2 percent.
The full report can be found on EIA's web site at:
EIA Program Contacts: Perry Lindstrom, 202/586-0934; Paul McArdle, 202/586-4445