CHICAGO (CBS) — Mayor Rahm Emanuel is outlining plans to save millions by making government buildings in Chicago more energy efficient.

As WBBM Newsradio 780 Political Editor Craig Dellimore reports, Mayor Emanuel is talking about retrofitting about 100 government buildings so they have more efficient lighting, heating, air handling systems, and more.

LISTEN: Newsradio 780 Political Editor Craig Dellimore reports

The cost of the program is about $40 million.

“In this case, if we did all the hundred buildings that we’ve identified and converted them for energy efficiency, we would employ around 375 people, another 1,200 to 1,100 ancillary jobs. You would save, annually, $4.5 to $5 million,” Emanuel said.

Emanuel spoke with reporters at the Daley Center courthouse and office building, which he says has cut its annual utility bills by $600,000 after an energy audit and conservation measures.