New York City is transitioning its 250,000 street lights to energy-efficient LEDs in an upgrade that should be completed by 2017. CBS reports that Mayor Michael Bloomberg announced the timeframe , noting that the upgraded lights will save city taxpayers around $14 million a year once the transition is complete. The savings is two-fold: LEDs consume less power than their high-pressure sodium counterparts, resulting in around $6 million in savings, and they also have a much longer lifespan, lasting up to 20 years. Current street lights last an average just six years, Bloomberg said.
The project has been a long time in the making. New York City has been testing LED lights for a number of years