Sustainable Energy at NIU


Northern Illinois University has completed eleven phases of guaranteed performance contracts with Energy Systems Group since the year 2000.  Based on 1995 energy and water consumption and the ESG analysis, NIU has saved: 

  • 42.3% of electricity

  • 23.0% of natural gas

  • 34.84% metric ton of CO2 emissions 

  • 37,972 kgal of water

IU has been able to acheive these reductions by making upgrades through performance contracts with its partner Energy Systems Group.  These performance contracts were enabled with the aid of grants from the Department of Energy and the Illinois Department of Commerce and Equal Opportunity.  

Click HERE for a full description of energy and efficiency improvements provided by Energy Systems group.  

Project Phases:

  • Phase I - Lighting retrofit and installation of occupancy (motion) sensors (18 buildings)
  • Phase II - Convocation Center HVAC equipment
  • Phase III - Lighting redesign and retrofit program (40 buildings and over 40,000 lighting fixtures)
  • Phase IV – West Chiller Plant
  • Phase V – Two-way control valve installation (Four Residence Halls)
  • Phase VI – Window / door replacement and mechanical & control system retrofits (five residence halls)
  • Phase VII – Window replacement and swimming pool, main Heating Plant boiler and miscellaneous HVAC upgrades (11 buildings)
  • Phase VIII – Lighting, HVAC, windows/doors, Heating Plant, control system upgrades and piping insulation (Campuswide)
  • Phase IX – Window replacement, lighting, air & dirt elimination system, structural repairs, brine system piping, building automation systems and plumbing fixtures (campuswide)
  • Phase X - Steam treaps, chilled water systems & coils, deaerator, HVAC improvements, windows and doors, roofing, and lighting