The French Union of Electricty (UFE) has just released a study on how to steer the Energy Effiency policy, all types of energy considered. The UFE suggests in particular to reshape this policy in order to give the priority to the actions that try to maximize the ratio "energy savings/invested capital" while allowing a real industrial policy.

This study, "L’ordre de priorité des actions d’efficacité énergétique", aims at helping energy professionals, consumers and local authorities to develop an approach economically accessible, all types of energy considered, and to point up the investments (private or public) that we shall mobilize in order to reach the objectives in terms of Energy Efficiency.
You will find the study in French here.