Media: Power over Ethernet can save energy and add workstation flexibility (Finance & Commerce)

Jul 2, 2019

From Finance & Commerce:

…Shen is studying PoE and monitoring the results of several local installations with the help of grants from U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy and the Minnesota Department of Commerce. One school and one school office currently are participating in the study. He’s working on adding new sites…

…Shen is still parsing data from PoE installations, and the National Renewable Energy Laboratory will be evaluating the results. CEE’s office saw impressive results, though mainly from switching to LEDs. Ethernet-powered LEDs used just 2% less energy than line-voltage connected LEDs, he said.

…The small difference could be made larger by allowing individuals to brighten and dim according to their needs. During the first part of the study the lighting had the same brightness and color, Shen said, allowing no fine tuning by CEE employees...

…Steve Buettner, director of media and technology for Edina Public Schools, had PoE-capable LED lighting installed in his department at the district’s headquarters and in one classroom at South View Middle School. The PoE is being tested against another classroom at the school using line voltage LED lighting…

…Shen said the results showed that initially the Edina schools’ IT office lights were set at 75% brightness. When staff later had a chance to individualize their light settings, many reduced the brightness of their work areas, leading to an overall power load decrease of 48%, he said…

Read the full article at Finance and Commerce