Brussels, 11/03/2009 (Agence Europe) - On Tuesday 10 March, the European Commission extended the in-depth investigation opened in 2007 into the regulated electricity tariffs enjoyed by certain large and medium-sized companies in France. The Commission says that these artificially low tariffs appear to give an economic advantage to certain companies and distort competition in the EU single market. The investigation is being widened to look at the prolongation of the system of “return...