Dimming Street Lights, Bright Idea
By 250 News
Tuesday, October 20, 2009 04:03 AM
Prince George, B.C.- It’s called “adaptive street lighting”, street lights which power down when traffic is light, to reduce energy consumption.

The City of Prince George was among the first municipalities in North America to deploy adaptive street lighting technology . Forty six Streetlight Intelligence Inc.’s (SLQ) Lumen IQ™ units (shown in photo at right) were deployed on a pilot basis in 2006. Data from these units shows a 41% reduction in energy consumption. According to B.C. Pacific Green if adaptive street lighting technology were deployed in all the City’s own street lights, energy consumption would be cut by 1,274 MWhrs and GHG emissions cut by up to 465 tonnes / year.
General Manager of Operations, Bob Radloff says there were no issues during the pilot project on issues of cold weather, vandalism, snow, or unexpected costs.
Now, the City of Prince George is being asked to install 1425 of the special street lights.
According to the research, slowly reducing the energy supply to a street light by 40% or more cannot be detected by the human eye and creates no real reduction in lighting levels.
While the overall installation costs are in the $170 thousand dollar range, it is thought the City can recoup a lot of that money through the B.C. Hydro Power Smart incentive program.
The proponents of the project say the installation of the new lights could save the City about $34 thousand a year in energy costs, and reduce GHG by 207 tonnes a year.
City Council has requested the idea be examined by staff to see how it might be included in the City's Capital plan for 2010.
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