[en] Powernext SA is a Multilateral Trading Facility which organizes and warrants the transactions on the European power exchange and CO₂ exchange markets. This issue of Powernext newsletter presents the highlights of the European power and carbon trade markets for the past months and up to September 2006 (editorial: liberalization, prices and tariffs: restoring a couple of true facts about the electricity market, partial aspect of French market's opening disrupts its operation and not the opposite, the return to a completely regulated market threatens the balance of the French electricity system and the construction of the Europe of energy). It reports on some market statistics (August 2005 to August 2006) related to prices and volumes traded on Powernext Day-Ahead^TM in the case of day-ahead contracts, on Powernext Futures^TM in the case of medium-term contracts, and on Powernext Carbon in the case of CO₂. Some Powernext and market news are summarized at the end of the document. (J.S.)