About five years ago, Clark signed up for an experimental program with his utility company. The utility gets to seize Clark’s air conditioner on hot days when the demand is higher. In return, he gets a bounty and the company saves tons of money. That’s because it costs a power company much more to get that last bit of energy than it does when the company is producing energy on a non-hot day. So, each additional source of energy costs more than the one before. And, it's a win-win if the company can conserve resources and the customer gets the payback. The idea of adjusting prices based on how much it costs to provide energy is starting to take root. Several states are experimenting with meters that people can adjust themselves depending on demand. Therefore, consumers can control their power bills. Pennsylvania, Florida and California are all experimenting with programs. Look for something similar in your state.