Salt Lake City converting 16,000 street lights to make them energy efficient, dark sky friendly
"Sky glow, coming from large cities like this, is a significant contributor to the decreasing of the night sky," said David Pearson, the street lighting manager for Salt Lake City Public Utilities."So we are installing dark sky friendly lights with the top shields on them so the LEDs you can see are pointed straight down."
That conversion alone cut the city's monthly power bill from $90,000 to $40,000. But in the process, the agency heard from some less-than-happy homeowners about the new, energy efficient bulbs.It prompted the city to tweak the color temperature and the brightness. In the process, Briefer said, they started adding shielding to make the area more dark sky friendly. It's part of a lighting master plan approved by the Salt Lake City Council.
Studies have shown that light pollution can have a negative impact on human health and wildlife. As a state, Utah has embraced"dark skies" and a return to nighttime star-gazing, with a number of communities and outdoor recreation areas becoming certified by the International Dark Sky Association. While Salt Lake City might never achieve that, Briefer said this can help improve quality of life.
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