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Gaslight with LEDs

Gaslight LED Lantern.  Photo by Selux

Gaslight LED Lantern. Photo by Selux

The gas replacement LED transfer module is a modular LED assembly for gas pole-top luminaires enabling gas lanterns to be upgraded simply to LED lighting. As well as lowering the power consumption of gas lanterns, which is 40 to 50 times higher, and reducing maintenance costs, this also conserves the urban landscape and a historic luminaire form while attaining virtually the same lighting effect, which in turn preserves an age-old light mood.


The innovation is manufactured by Selux AG, which also provides LED technology for the replacement of gas alignment lamps and old-fashioned illuminants in both pole-top and pendant luminaires.


Optical Technologies and Microsystems Technology , Construction and Urban Planning , Electrical Engineering , Media and Creative Industries

Advantages and solutions

Around half of all surviving gas lanterns in regular operation around the world are located in Berlin, followed by Dusseldorf und Frankfurt. They can also be found in Mainz, Essen, Dresden and, internationally, in London, notably on display as exterior lighting at Buckingham Palace, as well as Boston, Cincinnati and a few more cities in the USA (source: Wikipedia). This makes Berlin the largest open air museum for gas lanterns in the world, something both locals and tourists have learned to value.
Residents cherish the historic gaslights with their old-fashioned look as an integral part of the cityscape. By contrast, cities and municipalities tend to be less thanhappy about the running costs for gaslights, with these being at least 40 to 50 times higher. Upgrading of lighting by electrification of gas lighting using conventional illuminants is often unpopular with inhabitants. This is because the previously common method of replacing these using luminaires with high-pressure gas discharge lamps or even sodium vapour lamps - which are long-lasting and bright but at the same time deemed not particularly aesthetic, drastically alters the city landscape - often for the worse. Conventional electric lighting is also considered less insect-friendly by German conservation organisations like BUND and NaBu. Set against the background of the rapid development of low-consumption LED lighting technology, including in exterior lighting, it is also increasingly difficult to argue in favour of electrification using gas discharge lamps from the point of view of running costs.
LED technology has long since been available for use in the erection of new street lighting and in the meantime it is now available for upgrading lighting too. LED replacement pole-tops have been developed with the aim of preserving the night-time urban landscape. They are manufactured using LEDs selected individually during the production process so they correspond in light colour and luminous flux to gaslight. Light-directing elements are also included enabling a very good approximation of gaslight to the extent that the human eye is incapable of detecting any difference in the light and this can only be proven using measuring equipment. With the long service life of LEDs and their low current consumption, the cost benefits of electrification can still be achieved however.

Application and target group

Replacement of existing gas lighting by LED lighting while preserving the appearance of gas lanterns and their lighting characteristics.
Municipal offices, senates and contracting partners for street lighting.


More than 700 gas replacement LED transfer modules by Selux AG are currently installed in Berlin such as on Saalestraße in Berlin Neukölln near to the S-Bahnhof Neukölln suburban railway station.


Green Buddy Award
Published on 08.01.2016 ID: 000256


Gaslight LED Lantern.  Photo by Selux LED-Module. Photo by Selux
Photo by Selux


Senozon is an international consulting and technology company with specialization in location planning and site assessment, transport planning and transport systems as well as mobility research.

Incorporated in 2010 and operational since 2011, Senozon AG—a spin-off of the Swiss Federal Institute of Technology (ETH) Zurich—brings the achievements of more than 10 years of research into market.


In 2013, the german subsidiary Senozon Deutschland GmbH was founded. Located in Berlin, it helps Senozon in developing innovative products and services.


Senozon AG / Senozon Deutschland GmbH
Thomas Haupt / Daniel Röder
Schillerstraße 112
12305 Berlin

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