Improving energy efficiency (EE) can reduce energy demand and greenhouse gas (GHG) emissions, and deliver a range of other benefits such as improved air quality, enhanced economic competitiveness and, at the national scale, a higher degree of energy security. Energy consumption is growing faster in developing countries than in developed countries and is forecast to continue to do so. Significant improvements in energy efficiency could provide greater opportunity for economic growth while also providing broader access to energy and related services even from limited energy resources.