Wichita State University industrial and manufacturing engineering faculty Bill Wentz, Michael Overcash and Janet Twomey led the Industrial Sustainability Initiative group that collaborated with Wichita City Hall to lower lighting use and cost at the building.

The project, funded by the U.S. Department of Energy, allowed City Hall’s team, led by Rebecca Lewis, environmental services, and Kay Johnson, manager of environmental initiatives, to purchase and install occupancy sensors in offices on eight floors in the building. The Wichita State group analyzed the effects and results of the automatic lights.

The WSU team projected $280,000 in savings over the next 10 years for City Hall—the result of a 10 percent light electricity reduction, or 620,000 pounds less carbon dioxide emissions per year at Westar Energy power plants.

Wichita State College of Engineering’s involvement in the project was sponsored by the Sam Bloomfield Chair in Sustainable Engineered Systems—a part of WSU’s Sam and Rie Bloomfield Foundation.