The aim of the ODYSSEE-MURE project is to further improve and amend the existing databases as decision support tools for energy efficiency policy evaluation. The project seeks to build capacity around the two existing databases and tools: the ODYSSEE database on energy efficiency indicators and the MURE database on energy efficiency policies. The project further relies on the strong implementation of the participants in the national energy efficiency policy context, covering thus widely the national level of all EU countries, plus Norway, Serbia and Switzerland.