Little light shed on dark stretches of Lake Shore Drive
News from Chicago Tribune:

Q: How many city workers does it take to change a high-tech light bulb on Lake Shore Drive?

A: The usual number, but the workers and a city contractor must come back over and over again because the new energy-saving lights don’t work for very long.

Drivers who travel on Lake Shore Drive at night have become all too familiar with dark stretches ever since late 2010, when the Chicago Department of Transportation started spending federal stimulus funds to replace the old-style sodium vapor lights with high-tech ceramic white metal halide light fixtures.

The Tribune reported in October that more than 200 of the approximately 2,100 lights suffered outages on Lake Shore Drive from Hollywood Avenue to just beyond the drive at 71st Street.

Fewer lights are out on any given day now, officials said, but it’s only because electrical crews are being dispatched much more aggressively to hold down the total number of lights in failure mode. The costs of this do-it-again work are escalating, absorbed by both the city and the lighting installation contractor, depending on the specific problem found at different locations, officials said.

CDOT officials said last year that they were trying to solve the electrical riddle, although it appeared to involve a combination of reliabilit…………… continues on Chicago Tribune

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European LED commercial lighting market value to increase 7fold
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According to TrendForce’s “2011-2015 European LED Lighting Market Report” by the LED research division LEDinside, European LED lighting market’s rapid growth is attributed to the energy-saving awareness and high electricity prices in Europe, especially the latter.

For example, if a 7W LED light bulb (a replacement for 40W incandescent light bulb) is used for eight hours a day for a month (31 days), it can save 8 kWh compared to using an 40W incandescent light bulb. With the electricity prices of EU-27, US$ 2 can be saved every month by adopting a LED light bulb instead of incandescent one.

As for the future of LED, LEDinside has high hopes for LED commercial lighting’s prospects. Given the global anti-nuclear trend and no room for the electricity prices to dip, the energy-saving demand will only climb. LEDinside predicts that LED price will see a drastic drop starting from 2012 and expects the value of European LED commercial lighting market to reach US$ 1.9 billion by 2015, seven times more than that in 2011.

LEDinside indicates that more money can be saved by adopting LED lights in the outdoor and commercial lighting sectors due to their high electricity consumptions. LED light bulb’s lower wattage and higher thermal dissipation efficiency will result in better energy-saving efficiency. Thus, high electricity price is one of the most importan…………… continues on

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