President Obama announced on January 29 that the federal government—the largest energy consumer in the U.S. economy—will achieve a 28% reduction in its greenhouse gas (GHG) emissions by 2020. Reducing and reporting GHG emissions, as called for in Executive Order 13514 on Federal Sustainability, will ensure that the government leads by example in building the clean energy economy. The president issued the Executive Order on October 5, 2009, requiring each federal agency to submit by January 4 a 2020 target for reducing its GHG emissions from its estimated 2008 baseline. The new target is the aggregate of the targets set by 35 federal departments and agencies.