A significant amount of energy can be saved by using LED lighting outdoors and for lighting that remains switched on for hours at a time. Besides LED lighting, energy-saving lighting can of course also be used for lights that spend a great deal of time on in homes. Optimising the lighting can offer significant yields; for example, in recent years primarily general lighting has been replaced by workspace lighting in offices. Offices are now also using motion sensors and daylight sensors. Daylight penetration, sun blinds, light conducting systems, the depth of spaces and the colours of surfaces are all factors that can be optimised. Erhorn-Kluttig et al., 2011

Literature

• Erhorn-Kluttig H., Jank R., Schrempf L., Dütz A., Rumpel F., Schrade J., Erhorn H., Beier C., Sager C. & Schmidt D.; Energetische Quartiersplanung – Methoden – Technologien – Praxisbeispiele; Fraunhofer IRB Verlag, Stuttgart, 2011