SIU launches $9.9 million LED renovation to cut campus energy use

Southern Illinois University Carbondale has begun its first major indoor lighting renovation in two decades, replacing outdated fluorescent fixtures with LED linear tubes and occupancy controls across 33 academic buildings. The $9.9 million project is designed to reduce utility costs, maintenance demands and greenhouse gas emissions while modernizing campus infrastructure.

Key takeaways

• The renovation covers 33 academic buildings and is scheduled for completion in early 2027.

• SIU projects approximately $570,000 in first-year energy savings.

• LED lighting and occupancy controls are expected to save 4.8 million kilowatt-hours annually.

• The project could prevent an estimated 2,774 metric tons of carbon dioxide equivalent emissions each year.

• Ameren Illinois incentives are expected to provide approximately $150,000 when the work is complete.

For contractors, facility managers and property owners evaluating similar upgrades, SIU’s project illustrates how fixture efficiency, automated controls and available utility incentives can work together to improve a renovation’s financial return.

A campuswide lighting modernization

Approved by the SIU Board of Trustees in April, the renovation replaces obsolete fluorescent lighting in buildings including Morris Library, Faner Hall, the Engineering Complex, Altgeld Hall, Lawson Hall, Life Science II and III, and the Student Services Building. It is the university’s first major campuswide indoor lighting upgrade in 20 years.

The university says a typical two-lamp fluorescent fixture using 46 watts will be replaced by an LED solution using approximately 16 watts—a 65% reduction in fixture electricity consumption. LED tubes can also last up to three times longer than fluorescent tubes, potentially reducing relamping frequency, maintenance labor and disruption.

Occupancy controls target wasted energy

The project pairs the new LEDs with passive infrared occupancy sensors. In offices and classrooms, users will generally turn lights on manually, while the controls will switch them off after rooms remain vacant for 15 to 30 minutes.

Corridors, restrooms, library stacks and laboratories will use automatic-on operation where access, safety or building use makes it appropriate. SIU estimates that reduced operating time could produce additional savings of more than 50% in some offices and classrooms and as much as 85% in certain library areas.

Financial and environmental impact

The combined LED and controls installation is projected to reduce SIU’s main-campus electricity purchases by 7.4% compared with fiscal year 2026. The anticipated annual savings of 4.8 million kilowatt-hours would prevent emissions equivalent to those produced by 647 gasoline-powered passenger vehicles or offset by the annual carbon sequestration of about 2,782 acres of U.S. forests.

The project responds in part to a 47% increase in utility rates between fiscal years 2024 and 2026, as well as Illinois efficiency requirements and changes affecting the sale of mercury-containing fluorescent lamps. Utility rebates can be an important part of the project economics; suppliers such as Led Lumenaires support commercial buyers with product selection, spec-ready SKUs, bulk availability and rebate guidance.

Construction schedule and project considerations

Crews worked daytime shifts during the summer. Once the fall semester began, installation shifted to evening hours from 5 p.m. to 12:30 a.m. to limit interference with classes and campus operations. The university expects the renovation to be finished in early 2027.

For large commercial or institutional projects, SIU’s approach highlights the value of coordinating fixture specifications, controls, purchasing volume, warranty coverage and installation scheduling before work begins. Led Lumenaires’ Pro Support model is designed to help contractors and property managers evaluate layouts, prepare large quotes and select durable LED systems for comparable upgrades.

Sources

• Shining the light: SIU undergoing major lighting renovation on campus, SIU News.

• SIU Carbondale begins $9.9M lighting upgrade to cut energy costs and emissions, KFVS12.