This happened about a year ago. But with Cliffside in the news, I think this deserves some attention. Last May, around the time that the Progress Energy plant was a hot topic in Asheville, Duke Energy floated a fascinating proposal to the NC Utilities Commission. In it, they suggested that they would promote energy efficiency as a "fifth fuel" by sponsoring education programs and providing subsidies for the purchase of more energy-efficient appliances and devices.
So far, so good. Where it gets weird is in the reward Duke sought for being virtuous: a new fee (starting at $15 per customer per year) that would compensate the utility for the electricity it didn't sell because of decreased demand. That fee was based not only on program costs or unsold wattage, but also on the cost of the power plants the utility would have had to build if customers didn't conserve.