Other findings (from the news release):
- CO2 emissions from residential and commercial sectors increased by 4.4 percent and 4.3 percent respectively, as heating degree-days rose by 6.7 percent and cooling degree-days rose by 2.6 percent.
- Industrial CO2 emissions fell by 0.1 percent, continuing a trend of falling emissions since 2004.
- Transportation-related emissions, which account for about a third of total energy-related CO2 emissions, increased by 0.1 percent.
- With combined industrial and transportation emissions essentially flat, all the growth in emissions came from the residential and commercial sectors.
- When electric power sector emissions are considered as a whole rather than being attributed to the end-use sectors that consume electricity, they are the largest single source of U.S. carbon dioxide emissions, representing 40 percent of total emissions. In 2007, emissions from the electric power sector increased by about 71 MMTCO2 or 3 percent, while power generation increased by 2.5 percent. The increase in the emissions intensity of generation of 0.5 percent reflects, among other factors, a decline in non-fossil-fueled generation, as increased generation from wind and nuclear power of 6 and 19 billion kilowatthours, respectively, did not offset a drop in hydro-generation of 40 billion kilowatthours (kWh).
A full report on all global warming emissions in 2007 will be issued in November 2008.