United Nations Economic Commission for Europe ( UNECE ) is the Executing Agency for the FEEI project carried out under the auspices of the Committee on Sustainable Energy by the Steering Committee of the Energy Efficiency 21 Project . Decision-making and guidance for the project are in line with the participation and procedures of the Project Plan 2009 - 2012 for the Energy Efficiency 21 ( EE21 ) Programme endorsed by the Committee on Sustainable Energy at its eighteenth session ( ECE/ENERGY/2009/8 ) .