Energy Conservation and Decarbonization at NIU

Heating and cooling mechanical system improvements are being made in four buildings on campus: Engineering Building, Barsema Hall, the Convocation Center and the Chilled Water Plant on east campus.

Thermal energy storage (ice) tanks function like large batteries by making ice during off-peak hours and using it to cool buildings during peak hours, which helps reduce energy costs and ease demand on the electrical grid. As part of the HVAC efficiency upgrades across campus, thermal ice storage tanks will be installed at the Convocation Center, Barsema Hall, and the Chilled Water Plant on east campus.

Building automation systems (BAS) optimize energy use, reduce waste, and improve efficiency across HVAC, lighting, and other building functions. By using real-time monitoring and automated adjustments, BAS help minimize energy consumption, lower carbon footprints, and promote greener, more eco-friendly buildings. BAS upgrades will be implemented in 41 campus buildings.

LED lights are more energy-efficient because LEDs consume less power, last longer, and produce less heat compared to traditional lighting, reducing overall energy use and maintenance costs.  LED lighting conversions and occupancy controls are being implemented in 50 buildings and three sports fields.

Several classrooms in DuSable Hall will have circadian lighting controls installed. Circadian light is used to support human health by minimizing the effect of artificial light on human circadian rhythm, a natural internal human clock. The lighting will positively impact the learning environment and health of students.

Water conservation saves energy by reducing the amount needed to pump, treat, and heat water, which in turn lowers energy consumption and costs. Plumbing fixture improvements are being made in 39 buildings to reduce water consumption/waste on campus.

Building envelope improvements save energy by enhancing insulation, sealing gaps and reducing air leakage, which helps maintain comfortable indoor temperatures and lowers the need for heating and cooling. These types of improvements will be made to 39 buildings on campus.

Solar arrays will be installed across campus to support renewable energy generation. Rooftop arrays will be placed on DuSable Hall, Stevens Building and the Chessick Practice Center, while carport arrays will cover a portion of the Visitor Parking Lot. Ground-mounted systems will be installed over native planted areas northwest and southeast of the Convocation Center. The total system is expected to generate 3.3 megawatts, producing approximately 4.4 gigawatt-hours of annual energy which equates to approximately 6% of the university’s total electricity consumption.

Three 2-port Level 3 DC fast charging stations will be installed for visitor use under the carport solar arrays in the Visitor Parking Lot, creating 6 spaces for charging electric vehicles. Additional level 2 chargers for staff and student use elsewhere on campus are being evaluated as part of a separate program.