The French government has put in place in 2009 an incentive system for energy savings, based on certificates of energy savings (CEE in french) which could be traded on a market:
http://www.clubc2e.org/cp/45/Presentation%20generale%20CEE%20novembre%202011.pdf
The energy savings cumulated, and accounted by this system is 324TWHr in December 2012 with the following repartition:
