U.S. EPA Releases Proposed Greenhouse Gas Reporting Rules

The U.S. Environmental Protection Agency (EPA) has issued a proposed rule to require mandatory reporting of greenhouse gas (GHG) emissions from large sources in the U.S. that emit at least 25,000 metric tons of carbon dioxide equivalent per year. Under the proposal, manufacturers of motor vehicles and engines would be require to report GHG emission rates of new vehicles and engines beginning with Model Year 2011 at the same time and through the same process they currently follow for criteria pollutant emission certification and, where appropriate, fuel economy reporting. The purpose of the rule is to collect comprehensive and accurate data on GHG emissions that can be used to inform future policy decisions. EPA expects that the rule will cover 85-90% of total national GHG emissions. For more information, see the EPA GHG Emissions website.