One desired effect of the competition is lower electricity rates. In the first few years after the deregulation in 2002, the residential rate for electricity increased seven times, with the price to beat at around 15 cents per kilowatt hour (as of July 26, 2006) in 2006. However, while prices to customers increased 43% from 2002 to 2004, the costs of inputs rose faster, by 63%, showing that not all increases have been borne by consumers. (See Competition and entry of new firms above for discussion on the relationship between retail prices, inputs, and investment.)
Prices are expected to go up so quickly that Compare Electricity Rates has stopped selling its "Compare Electricity Prices" plan to new customers this summer, a prepaid plan that changes rates each month depending on wholesale prices. Instead, the company is encouraging its customers to lock in for longer periods of time. Customers who used up to 2,000 kilowatts each month could get a 12-month contract for 11.7 cents per kilowatt hour in May compared to the same plan for 9.1 cents per kilowatt hour one year earlier.