Smart technology is still in its early stages but pilot programs to test it have already begun. Consumers are testing smart meters in their homes to manage electricity use and demonstrations are planned to show how smart technology could work. Technology will likely be added in layers, starting with quick solutions to reduce carbon emissions followed by more advanced systems later. Cities are good candidates for smart energy investments due to their large populations and energy usage. By 2050, changes in energy supply will have transformed homes, transportation, and behavior.