This third edition incorporates the conclusions and consequences of the Sectoral Energy Competition Enquiry. The new edition contains an entirely reworked section on anti-competitive agreements and practices, written by Lars Kjolbye, who led of the unit in charge of anti-trust in the energy sector of the European Commission. The book further examines in detail the developments in individual case concerning long-term capacity reservation and sales/purchase agreements. It also considers recent developments on cases concerning collusion on price and quantity restrictions. The book looks thoroughly at the consequences of the sectoral enquiry on abuse of a dominant position, particularly regarding discrimination in network access. The section on merger control is revised to take account of developments in the methodology in defining markets and defining dominance/significant impediment of competition from the sectoral enquiry. Furthermore, it updates the state aid section to take account of