LED streetlights in Ann Arbor, Mich., are expected to cut maintenance and electricity costs.
To change the bulbs in the 60-foot-high ceiling lights of Buckingham Palace’s grand stairwell, workers had to erect scaffolding and cover precious portraits of royal forebears.
This is the second in a series of articles about stopgap measures that could limit global warming. Future articles will address appliance-efficiency standards, transportation, reducing global-warming gases other than carbon dioxide and other efforts.
So when a lighting designer two years ago proposed installing light emitting diodes or LEDs, an emerging lighting technology, the royal family readily assented. The new lights, the designer said, would last more than 22 years and enormously reduce energy consumption and carbon dioxide emissions — a big plus for Prince Charles, an ardent environmentalist. Since then, the palace has installed the lighting in chandeliers and on the exterior, where illuminating the entire facade uses less electricity than running an electric teakettle.
In shifting to LED lighting, the palace is part of a small but fast-growing trend that is redefining the century-old conception of lighting, replacing energy-wasting disposable bulbs with efficient fixtures that are often semi-permanent, like those used in plumbing.
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