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Bright lights, bold city

Bright new ideas: Smart lighting in Vilnius

Urban lighting is a defining feature of the modern city landscape. Not only does it help highlight the architectural uniqueness of a city, but it also can serve as a fundamental part of an energy-saving solution. A unique partnership between Atea and the City of Vilnius illustrates just how much can be accomplished when you fuse urban lighting with bold ideas.
Together, they implemented an all-new LED lighting system for the Seimas: Lithuania’s parliament building located in the heart of Vilnius. Overnight, the building’s façade gained an entirely new aesthetic image. Since LEDs draw significantly less power than standard bulbs, the city gains substantial savings on energy use. It has been estimated that the investment in this will pay off after a little more than one year. The power consumption of one lamp has decreased almost tenfold, whereas the power of one unit has diminished by nearly 8 times (from 1,000 to 116 W). As a result, other projects are now being considered in town where significant illumination of civic spaces is required, including churches, museums and monuments, as well as Gelvonų Street, where modernized smart lighting management system will soon control street lighting remotely and using different lighting scenarios.
Each of these lighting system is powered by special software, giving the city the ability to manage all lamps connected to the system in a centralized manner, changing the level of lighting and reducing luminosity where desired.
As the city’s Technical Project Manager, Vilius Čeledinas, explains: “The lighting intensity changes according to the pre-set scenario. When the intensity of movement of residents is high, lights run at their full capacity. When intensity is low, the power can be cut by nearly half, resulting in significant savings.”
Another advantage of this system is its expandability. If auxiliary sensors responding to the traffic flow, time of the day and brightness of the surroundings are installed, the system can judge which intensity it needs to operate at.
At present, the Vilnius Street Lighting Power Grid deals with the illumination of the streets across the capital. The company has 84 employees who carry out maintenance and repairs of over 46 thousand illuminators and floodlights, 668 power supply and 239 distribution stations; the city has been webbed with a grid of power cables in excess of 1,600 km.


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