Smart Thermostat. Energy savings of about $50 a year – Our energy experts tested both simple and sophisticated smart thermostats in South Florida single-family homes and found the A/C savings for both to be the same. In South Florida, all the savings measured came from reduced cooling. Homes saved on average, 450 kilowatts per year or about $50.
https://www.fpl.com/energy-my-way/smart-home-technology.html