"A new report jointly produced by Philips Lighting and the World Council on City Data (WCCD) reveals that the city of Los Angeles made energy savings of 63 percent in 2016 by implementing such a system (implementing LED lighting), generating cost savings of $9 million and reducing its annual greenhouse gas emissions associated with public lighting by 47,000 metric tons. This is equivalent to the greenhouse gas emissions from almost 10,000 passenger vehicles driven for one year."

Red the full article  https://www.kbbonline.com/news/business/reducing-co2-smart-led-lighting-city-data/