According to a New York Times article published on Saturday, the nighttime dimming of skyscraper lights is finally starting to become widespread and noticeable. The article says that lights were more often dimmed during World War II and the energy shortage of the 1970s, but otherwise it’s normal for buildings to have way too many lights on at night.
Timers, motion sensors, and light dimmers are all being used to reduce the energy waste associated with superfluous lighting. These projects are easier in modern times because the cost of the technology has dropped significantly. One interesting point is that landlords have an easier time renting space if their building has been approved for environmental efficiency. However, if tenants have to pay for electrical bills themselves, they are more likely to install efficient lighting devices.
MSU’s EJ Magazine published an article by Amanda Peterka entitled “Blackout!” in their Fall 2006 issue that covered the same topic. Both articles mention groups like New York City Audubon and International Dark-Sky Association (IDSA), which have been highly instrumental in bringing about large-scale changes in huge American cities like New York and Chicago. According to Peterka, the IDSA certified Flagstaff, Arizona as the first International Dark Sky City in 2001. New York City was given a 9 on the IDSA’s 9-point scale of light pollution (i.e. wasted/unnecessary light and sky glow).
To me this seems like a no brainer. There is absolutely no reason to keep these skyscrapers lit up at night. All unused and extra light should be turned off. Savings will come in electric bills and carbon emisssions. It’s not a complete solution, but — as with most environental action these days — it’s a step in the right direction.
