Under the EPA's greenhouse gas reporting rule, suppliers of fossil fuels or industrial greenhouse gases, manufacturers of vehicles and engines, and facilities that emit 25,000 metric tons or more per year of GHG emissions are required to submit annual reports to EPA beginning in 2011. Collection of emissions of CO2 and other greenhouse gases for the reports begins Jan. 1, 2010. The initial reporting is projected to account for about 85 percent of the nation's GHG emissions and apply to about 10,000 facilities. The rule includes final reporting requirements for 31 of the 42 emission source categories identified in EPA's preliminary rule, with the remaining nine sources under further consideration.