The second in CEPR's annual Monitoring European Deregulation (MED) series, this report explores the economic and regulatory aspects of a single European market for electricity and provides a basis for policy choices both at national and EU levels. The report combines analyses of key issues in electricity market integration and liberalization with evaluations of practical experiences in selected European countries: France, Germany, Norway, Spain, Sweden, and the UK. Key issues include: to what extent competition in national electricity markets is a necessary requirement for the integration of these markets, and the design of national electricity markets in which competition in generation and supply is allowed. Lars Bergman is at the Stockholm School of Economics; Gert Brunekreeft is at Institut fuer Verkehrswissenschaft, University of Freiburg; Chris Doyle is at the London Business School; David M G Newbery and Michael Pollitt are at Cambridge University; Pierre Regibeau is at Institut d'Analisi Economica CSIC, Bellaterra; and Nils von der Fehr is at Nuffield College, Oxford.