The Federal government of the U.S. operates 360,000 buildings, 650,000 fleet vehicles, and spends $445 billion annually on goods and services, making it the largest consumer of energy in the country. To reduce GHG emissions, an Executive Order by President Obama on March 19 mandates that Federal buildings reduce total energy use by 2.5% per year between 2015 to 2025, and increase the proportion of clean energy to 25% by 2025. Water intensity in Federal buildings will also be cut by 2 percent per year till 2025. Regarding the fleet of 650,000 vehicles, the Order establishes a goal of 30% reduction of GHG’s from 2014 levels by 2025. A White House Fact Sheet, Reducing Greenhouse Gas Emissions in the Federal Government and Across the Supply Chain (March 19) provides more details, and summarizes the emissions reductions commitments made by major suppliers in the federal government supply chain. Those suppliers include such giants as IBM, HP, AECOMM, Northrup Grumman, and United Technologies.