21 Dec 2010:
Digital Billboards Consume
Large Amounts of Energy, Analysis Shows
The growing number of digital billboards on U.S. roads and highways consume large amounts of energy
and are creating a wide variety of electronic waste, according to a new report. The new study says the typical digital billboard consumes about 30 times as much energy as the average American household. The digital billboards use more efficient LED (Light Emitting Diode) lighting than traditional signs, but deploy so many of the LED bulbs on each billboard that energy use is high; traditional billboards use just one or two large bulbs to illuminate signs, according to the study
by Gregory Young, a Philadelphia-based architectural designer and urban planner. In addition, digital billboards are illuminated day and night, and require cooling systems that use more energy. And while LEDs, plasma and LCD screens are recyclable, reuse is not mandated, leading to a large surplus of “techno-waste,” said the study, published by the group Scenic America. The U.S. has roughly 800 digital billboards, compared with 450,000 traditional billboards. But use of the technology is expanding quickly, with more than 2,000 expected by 2012.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
The 2015 Yale e360 Video Contest winner documents a Northeastern town's bitter battle over a wind farm. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
A 2015 Yale e360 Video Contest winner captures stunning images of wild salmon runs in Alaska. Watch the video.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.