Pepco is doing what DC/Maryland governments have legislated it to do. A portion of everyone's electric bill goes into an energy conservation fund and the money goes to energy saving measures like lightbulbs, discounted energy audits, rebates for efficient equipment and comprehensive building retrofits.
It is far from being a comprehensive energy policy much less taking on our culture of consumption. But it's something.
Empower Maryland Program:
http://www.mdhomeperformance.org/
http://energy.maryland.gov/facts/empower.html
DC Home Performance:
http://www.dcseu.com/for_your_home/DC_home_performance