Buenos Aires is switching around street lamps to LED technology

Buenos Aires in Argentina is the second biggest city in South-America, with about 13 million people. To light up the city at night requires over 125,000 street lamps. So that must equal a lot of energy just to power them

After a public bidding process, Philips has been selected to replace most of  the city's streetlamps with new LED models. These LED streetlights are expected to reduce energy use by half for the city, which in turn will means a significant reduction in CO2 production and also reducing the amount of money spent making the energy