About us
Wind turbines are equipped with obstruction lights to be visible in the dark for air traffic. Those obstruction lights blink from dusk till dawn, no matter if an aircraft is nearby or not. This constant blinking has proven to be an obstacle in the acceptance of wind power.
To stop the unnecessary blinking and to make the night sky dark again, there is a technology called Aircraft Detection Lighting System or Aviation Detection and Obstacle Lighting System, ADLS for short.
Through ADLS, it is possible to turn off the blinking obstruction lights of wind farms. This is done by monitoring the airspace around a windfarm. The obstruction lights of the wind turbines are only activated when an aircraft is in the vicinity.
In Germany, the use of ADLS on wind turbines is required by law. Following a recent extension, the implementation deadline for operators is January 1, 2025. With this expertise, we are committed to bringing ADLS to other countries as well.
The light:guard system for Aircraft Detection Lighting System is type-tested and meets IEC and ICAO standards. We already equipped some wind farms abroad with our ADL system and would be more than happy to provide you with a customized solution.
turbines under contract
receivers installed
wind farms turned dark
adls
Every flying object is obligated to send out transponder signals to be identifiable. Those are being received by the light:guard receivers.
The system receives continuous data from all receivers at once and is therefore able to achieve a higher network coverage than each individual receiver would by itself.
This leads to a better signal quality and higher light-off times for each wind turbine, especially in areas with high air traffic or large wind farms.
The latest developments on the subject of ADLS
Here you will find everything you need to know about the legal situation regarding on-demand night-time marking in Germany and elsewhere. Also: our press releases and events. It’s worth taking a look!
4th December 2025
On the 4th of December we held a webinar on the topic of Aircraft Detection Lighting Systems (ADLS) internationally.
In this session, our experts and international partners provided an overview on ADLS across multiple countries, addressing regulatory frameworks, technical implementation, and practical project experience.
If you missed the webinar or would like to review the content, you can do so here:
Husum, 16.-19. September 2025
HUSUM WIND will take place from September 16 to 19, 2025.
We will of course be there, this time as part of the Cottbus Chamber of Industry and Commerce’s joint stand. You will find us in Hall 1 at Stand 1C14. We look forward to seeing you there!
Let’s arrange an appointment now!
11th September 2025
The Nordex Group and Light:Guard are entering into a partnership. The core of the partnership is to equip new Nordex wind farms being built in Germany with the light:guard Aircraft Detection Lighting System, or ADLS for short.
Want to play an active role in shaping the energy transition and contribute your own perspective? Why not join Light:Guard?