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NEWSFLASH: The ILLINOIS ENERGY NOW SEDAC retro-commissioning program is waiving the minimum implementation spending of $10,000 for new STATE and FEDERAL facilities (those approved after December 1, 2016). Apply today!

Illinois Energy Now offers a retro-commissioning (RCx) program for public sector buildings as another means towards reducing energy usage in buildings. SEDAC supports the Department of Commerce Office of Energy & Recycling in management of the program and providing the RCx services. This program offers retro-commissioning guidance by identifying measures to improve the control, scheduling, and operation of energy consuming systems to match the current functional requirements of the building. The end result: significant energy and demand savings, and in many cases, improved occupant comfort and productivity.

RCx analysis by SEDAC is fully funded by Illinois Department of Commerce. Each participant must only cover costs associated with implementing the measures recommended by the RCx analysis, attend meetings, as well as assist RCx service providers in acquiring facility information. 

RCx Brochure

RCx Poster


Eligibility for the program year is limited to public sector entities that have electric service delivered by Ameren Illinois or ComEd utilities. Local or state governments, K-12 school districts, community colleges, and public universities are eligible to apply. Note: Entities receiving natural gas from Ameren Illinois, Nicor Gas, North Shore Gas, or Peoples Gas may also be eligible for inclusion of natural gas savings measures.

Applicant eligibility is limited to existing buildings that:

  • are more than 5 years old*
  • exceed 150,000 square feet*
  • have a functioning building automation system with a minimum of guest access for the RCx provider, and
  • have an energy use index showing a potential to produce significant electrical (and natural gas) savings through RCx.

    *  Preferably, the facility should be at least 5 years old and exceed 150,000 square feet.  However, newer and smaller buildings with a high energy savings potential may be considered.

To be considered for the program, applicants must:

  • submit an application for RCx
  • provide energy bills for 1 to 2 years, and
  • present up-to-date as-built drawings.

Successful applicants must agree to:

  • commit funding (minimum $10,000) to participate in the process
  • begin implementation of measures in the current fiscal year (ending May 31, 2017)
  • implement at least $10,000 worth of selected measures within 10 months, or by March 31st, 2017, whichever deadline arrives first

The facility owner is required to commit funding for participating in the process, completing the project plan, and implementing measures.  The owner must be prepared to assume costs and expenses of at least $10,000 for agreed-upon measures that result in an estimated simple payback of 18 months or less based upon electrical and natural gas savings.  If at least $10,000 worth of measures recommended are not implemented within 10 months of receipt of recommendations or by March 31, 2017, whichever deadline arrives first, the owner will be responsible for reimbursing the program for the cost of the analysis.


The RCx program is an 18 month to 24 month partnership between the RCx provider and the building stakeholders for investigation and optimization of building operations. The RCx provider conducts a facility assessment to diagnose problems and make recommendations for minor low-cost adjustments that can be made quickly, as well as recommendations for more substantial improvements. An assessment of cost, savings, and payback is part of the process. The RCx provider will then work with the customer’s implementation team to fully investigate, implement, and verify the recommended measures.


  1. To learn more about this program, please download and review the IEN RCx Program Application
  2. Once you have reviewed its contents and before completing the application, please fill out the Notice of Interest
  3. or call 312.267.2865 to determine your eligibility.

Submit applications to SEDAC either at 312.264.2379 (fax) OR email to

List of Current RCx Service Providers

View list of pre-qualified Retro-Commissioning Service Providers

Become a RCx Service Provider

Are you an experienced RCx provider? Want to participate in our program? SEDAC invites interested architects and engineers experienced in retro-commissioning to become pre-qualified RCx Service Provider by completing the Request for Qualifications (RFQ). Learn more.

For more information, contact: