TY - RPRT U1 - Forschungsbericht A1 - Bunse, Maike A1 - Irrek, Wolfgang A1 - Siraki, Klara A1 - Renner, Gisela T1 - Task 2.1: National report on the energy efficiency service business in Germany Y1 - 2010 SP - 39 S1 - 39 PB - Wuppertal Institut für Klima, Umwelt, Energie for Climate, Environment, and Energy CY - Wuppertal PB - Wuppertal Institut für Klima, Umwelt, Energie for Climate, Environment, and Energy CY - Wuppertal ER -