That depends on several factors including wholesale electricity prices, retail service offerings, and your energy consumption habits. Smart meters make more information about your energy use available to you. If you choose to use that information to lower your energy consumption, you could save money.
Studies suggest that raising consumer awareness of energy use does lead to lower consumption, which should not only save money for consumers who reduce their usage, but also could lower the cost of electricity for all consumers. In addition, smart meters will allow Retail Electric Providers to offer time-of-use rates that encourage energy use during off-peak periods. For example, customers might pay less to run appliances at night.