Albana Kona, Giulia Melica, Silvia Rivas Calvete, Paolo Zancanella, Andreea Iancu, Irena Gabrielaitiene, Yamina Saheb, Greet Janssens- Manhout, Paolo Bertoldi The Covenant of Mayors in Figures and Performance Indicators: 6-year Assessment 2015 Report EUR 27110 EN