This is the second edition of the Best Policy Practices for Promoting Energy Efficiency publication prepared in the framework of the United Nations Development Account project "Promoting Energy Efficiency Investments for Climate Change Mitigation and Sustainable Development". It provides additional exemplars of the best policy practices for promoting energy efficiency in UNECE region and beyond. The objective of the publication is to present a structured framework of policies and measures to promote energy efficiency investments for climate change mitigation and sustainable development, as well as to develop a menu of energy efficiency policies and measures.