Edited by Cipriano Marin, Jolanda Crettaz, Christine Lins, Arthouros Zervos (Brusels 2004) Published by: EREC (European Renewable Energy Council), INSULA (InternationalScientific Council for Island Development) and EUFORES (European Forumfor Renewable Energy Sources). European Commission. This publication gives an overview of the main features and best performances achieved during the last five years (1999-2003), period of implementation of the Campaign for Take-Off (CTO). It further presents a general overview of key-success factors for renewable energy sources (RES) implementation, and showcases the most relevant initiatives of which one can draw crucial lessons.