President Barack Obama signed an Executive Order that defines waste-to-energy as a renewable energy source. The Executive Order requires Federal agencies to set a 2020 greenhouse gas emissions reduction target within 90 days; increase energy efficiency; reduce fleet petroleum consumption; conserve water; reduce waste; support sustainable communities; and leverage Federal purchasing power to promote environmentally-responsible products and technologies. The Executive Order builds on and expands the energy reduction and environmental requirements of Executive Order 13423 (which also defined waste-to-energy as renewable) by making reductions of greenhouse gas emissions a priority of the Federal government. This new Executive Order provides another leading example of waste-to-energy receiving broad support as renewable.