But in Houston, where there are 52 companies on Power to Choose each offering several different power plans, there might be too many choices. Economists have found that when confronted with a large number of choices, most people tend to do nothing. In one well-known behavioral economics experiment, researchers set out six samples of fruit jams at a grocery store, enticing 30 percent of shoppers to buy the product. But when they increased the number of samples to 24, only 3 percent of shoppers made a purchase.

On the other hand, month-to-month variable rate (no-contract) plans don’t have cancellation fees. You won’t be penalized if you find a better deal elsewhere and want to make another switch.  And, you won’t be stuck paying more than you should be if the market rate for electricity trends down.  But, if it goes up, you’ll be paying more than your in-contract neighbors, and you’ll likely want to shop around again for a better deal.