It is known that the better way to reduce CO2 emissions is to innovate sustainable energies like solar, wind and biomass. Another way to stop pollution is not in the difference of production, but in consuming less. Although not completely obvious, lighting is responsible for over 20% of world electricity consumption. Most of this is consumed in non-domestic applications, thus it is necessary to find a more resourceful approach.
With the improvements of light-emitting diodes (LEDs), it could be effective for public authorities (who have committed to reduce CO2 emissions) to achieve their goal. At the same time it is an opportunity for the manufacturers of LEDs to reach new markets. Several projects led by public authorities are beginning to emerge with the aim to substitute incandescent lamps with white LEDs. As an example we can quote the city of Darmstadt in Germany which is testing new streetlight equipped with white LEDs. The project involves both HEAG and Siteco as technologic suppliers and Darmstadt’s citizens as users.
A LED is a semiconductor diode embedded in an epoxy lens in which currents flow one-way through. There is a difference of potential at the two sides that enables it to emit a photon at the top of the lens providing light. Advantages are both economic and ecologic due to a lower consumption of electricity. However, studies forecast that usage of white LEDs for streetlight markets will take off in ten years.
Until then these lights are used only for car headlights and on the back of some cell phones. Even though there are no streetlights for the moment we can see LEDs lit in the street by the following street art clip. A Graffiti Research Lab creation!
With the improvements of light-emitting diodes (LEDs), it could be effective for public authorities (who have committed to reduce CO2 emissions) to achieve their goal. At the same time it is an opportunity for the manufacturers of LEDs to reach new markets. Several projects led by public authorities are beginning to emerge with the aim to substitute incandescent lamps with white LEDs. As an example we can quote the city of Darmstadt in Germany which is testing new streetlight equipped with white LEDs. The project involves both HEAG and Siteco as technologic suppliers and Darmstadt’s citizens as users.
A LED is a semiconductor diode embedded in an epoxy lens in which currents flow one-way through. There is a difference of potential at the two sides that enables it to emit a photon at the top of the lens providing light. Advantages are both economic and ecologic due to a lower consumption of electricity. However, studies forecast that usage of white LEDs for streetlight markets will take off in ten years.Until then these lights are used only for car headlights and on the back of some cell phones. Even though there are no streetlights for the moment we can see LEDs lit in the street by the following street art clip. A Graffiti Research Lab creation!
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