In order to spur progress on energy efficiency, the IEA recommended the adoption of specific energy efficiency policy measures to the G8 at their summits in 2006, 2007 and 2008. These collective recommendations became known as the 'IEA 25 energy efficiency recommendations,' covering seven priority areas: cross-sectoral activity, buildings, appliances, lighting, transport, industry and utilities. In 2009 the IEA conducted an evaluation of member-country implementation of the recommendations. This was followed up in 2011 with a second evaluation, the results of which are published in this working paper. Findings indicate that significant unexploited energy saving opportunities remain and could be achieved via additional energy efficiency policy implementation. It also highlights that sharing experience with implementing energy efficiency policies will accelerate energy efficiency improvement worldwide and transform markets for energy-efficient technologies.