But a recently announced partnership with a New York City-based start-up is set to bolster Las Vegas' commitment to renewable energy sources. Soon enough, some of "Sin City's" sidewalks will be illuminated by EnGoPLANET's innovative sun- and people-powered street lights.

EnGoPLANET focuses on developing off-the-grid solutions and infrastructure to harvest energy from alternative sources. Installations of EnGoPLANET's latest, the Street Light, is expected to be a first-ever for the company. Together with the city of Las Vegas, the solar-kinetic lights will be placed throughout Boulder Plaza. Not only are these street lights designed to be powered by the sun, but footsteps of passing pedestrians will help keep them illuminated all through the night.