[Revealed]: The Secret Tech That Makes Elon Musk's Smart City a Reality You may not notice it, but the world around you is changing drastically. Earlier this year, for the first time ever, New York City’s beloved Empire State Building became a smart-energy skyscraper that is now 100% powered by wind. Last summer in Chattanooga, city officials completed the installation of its Ultra Smart Streetlight system, created by Global Green Lighting. The system uses a technology called the FlexNet lighting control system to monitor and control 350 energy-efficient LED fixtures along a 35-mile grid. The new system promises to provide a safer environment for residents walking at night while also reducing the city's carbon footprint.