You could easily use the lutro. Or aprilaite thermostats which are common choices to automate your heat and AC. These would allow you to setup a schedule.

If you want energy consumption to be monitored look at savant for an automation system. They make their own energy consumption monitoring equipment, wifi thermostats and savant is actually owned by apple. So they have great iPad and iPhone apps and interfaces. You can see the energy management and thermostat interfaces demoed in their app which you can download and view a demo setup free