CHICAGO (CBS)–The city has reached a new milestone in its plan to replace all its street lights with more energy-efficient LED bulbs.

More than 100,000 LED lights have been installed so far, the city says.

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The new lights are expected to save the city millions spent on energy costs, and improve brightness at night.

The city has said the new lamps will allow for real-time monitoring of outages, will last much longer than the older bulbs, and allow the city to dim or brighten fixtures remotely.

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