St. Paul Testing LED Lights
The city of St. Paul is testing light-emitting diode, or LED lamps in street lights in hope that the new lamps would reduce the energy use, according to the Star Tribune.
The hope from city officials is that the new lamps will be whiter, brighter and cheaper to maintain.
St. Paul is one of many cities following in the footsteps of other eco-friendly cities, like Austin, Texas; and Ann Arbor, MI.
LED's are most commonly used in video screens, signs and traffic signals.
Each year, the city spends about $8.5 million on electricity and natural gas. The city began testing LED's in 2003 in traffic signals and walk signs. Overall, the city has saved $85,000 in labor costs and $180,000 in electricity.
Manufacturers say that they typically will reduce energy use by 50 percent, they have longer life and are need less maintenance than normal street lights.
The biggest disadvantage right now is the cost of the lights and getting the right color and lighting effect.