Électricité de Strasbourg is the largest local energy distribution company in France and the leading regional energy supplier in the Alsace Region. As a consequence of new business challenges in a changing context, of the deregulation of supply tariffs and of the possible tightening of grid regulation, it has reviewed its entire strategy, offers and positioning as a regional supplier, considering a broad scope of options. Tilia has been the partner of ES in this complete strategic and operational review, designing and conceiving service and value options in order to set its new priorities, which have then turned out to be successful.