Precise predictions with percentage values are difficult to make across the board. In some wind farms, the light:guard system achieves light-off times of almost 100%. However, it depends very much on the location and the region. Next to an airport, the reduction in lighting is not nearly as significant. The flight activity is simply too high here. In general, of course, the safety of air traffic must be guaranteed. For this reason, it does not make sense to state or interpret percentages regardless of location. However, it is interesting to compare the different methods at one location. We will be publishing results on this in the near future.