Sustainability
In 2006, the Foundation started replacing the incandescent light bulbs with light-emitting diodes (LEDs); an initial batch of one thousand LED bulbs was installed. Over time, the incandescent lights will be retired; wholesale replacement of the existing bulbs would be too expensive. Compact fluorescent lamps, used to save energy in other applications, are not a viable solution because they are not suitable for outside lighting.
Read more about this topic: Lichtjesroute