Today the U.S. EPA proposed a rule that would require approximately 13,000 large source facilities to annually report their greenhouse gas emissions. The facilities covered include fossil fuel suppliers, industrial chemical suppliers, motor vehicle and engine manufactures and large direct GHG emitters (defined as facilities that emit 25,000 metric tons or more of GHG emissions). The proposed rule will soon be published in the Federal Register; a pre-publication copy can be found here.