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Knoxville says it's saving money by cutting emissions. City leaders updated their energy and sustainability initiative Tuesday, which is now in its seventh year.

Based on 2012 data, the city says it reduced its energy consumption by more than 6 percent compared to 2005 levels, and cut greenhouse gas emissions associated with city operations by almost 13 percent.

At the community level, the emissions associated with energy use, transportation and waste management fell by almost 8 percent.

Projects like converting traffic signals to LED technology, and energy efficiency upgrades in city buildings helped make the savings possible.