California may get the award for energy efficiency, but it is the second largest emitter of CO2; Texas is first

DOE's Energy Information Administration has released its statistics for energy-related CO2 emissions for the time period 1990 to 2005. The information is broken down by State. The data focuses just on CO2, not on all GHGs. However, as EIA notes: "Although energy-related carbon dioxide (CO2) emissions do not encompass a full greenhouse gas inventory, the state energy-related carbon dioxide emissions do give a good indicator of the relative importance of individual states to the national greenhouse gas inventory as energy-related carbon dioxide emissions represent 83 percent of total U.S. greenhouse gas emissions." EIA rates Texas the largest emitter, at 625.2 million metric tons in 2005; the most significant source of emissions from Texas derive from the electrical power industry. California was the second largest emitter with 395.2 million metric tons in 2005; the bulk came from the transportation sector (which was 234.4 million metric tons of the State's total). Not counting D.C., the two lowest emitters were Vermont with 6.8 million metric tons of CO2, and Rhode Island, with 11.1 million metric tons. Overall, petroleum represented the largest source of emissions; coal was second. The EIA data can be found at http://www.eia.doe.gov/environment.html. EIA has also put forth its annual energy outlook for 2008, with projections to 2030. As part of its analysis, EIA also makes projections about the emission of CO2 during this time period. See http://www.eia.doe.gov/oiaf/aeo/emission.html.