As new technologies emerge, the Federal government has a responsibility to lead by example. Our government owns and manages approximately 500,000 buildings and operates more than 600,000 fleet vehicles. The electricity used for its buildings, the fuel used in its cars and trucks, and the energy required in military operations make it the largest energy consumer in the US economy. That’s why President Obama signed an Executive Order that made it the responsibility of every Federal agency to help move the nation towards a clean energy economy by leading by example, practicing what we.