Good decorative street lighting, Puente la Reine by Andreas Hänel is licensed under a Creative Commons Attribution 3.0 Unported License.
Decorative street lighting in Plaza Julián Mena by Andreas Hänel is licensed under a Creative Commons Attribution 3.0 Unported License.
The lamp at top left wastes a large fraction of the light that it produces, by sending much of the light where it's not needed. The lamp at center right casts its light only downward, towards the ground. For comparison, here is the daytime view from Google street view. In Puente la Reina, before they changed the lighting many areas were extremely overlit. By directing the light better and using lower ground lighting levels, the town was able to cut its electricity consumption and energy bill drastically. The result is well lit streets, that are more attractive than they were before the lighting intervention.
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