Retro-commissioning (RCx) is a process by which existing building systems are optimized in order to perform as efficiently and effectively as possible. Most often system operating parameters are adjusted for energy-consuming core building equipment such as mechanical systems, digital controls and lighting.

IPL’s RCx incentive aims to help customers understand opportunities to save energy costs within their facility by co-funding a comprehensive RCx Study, which offers valuable recommendations for building systems improvements.

How it Works

IPL's RCx program incentivizes both customers and qualified study providers:

  • IPL customers can earn $0.04/kWh saved by implementing measures identified in an RCx Study.
  • Qualified study providers can earn up to 50% of the total study cost in IPL incentives.
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Who Qualifies?

Target Facilities

  • Incentives are geared toward facilities with low-cost or no-cost energy saving opportunities that can be implemented in a short time period and will produce a rapid return on investment.
  • Facilities with the ability to manage and manipulate the building systems with an integrated control system are prime candidates.
  • Buildings already considered "high performing" may not provide savings opportunities significant enough to receive approval to participate, which is based upon a cost-benefit analysis performed on a project-by-project basis.

Study Providers

Each study provider must meet minimum qualifications to participate. IPL reviews the application for each study provider carefully to ensure they meet required criteria.

How to Start

  • Step 1 - Application: You or your selected study provider submit the RCx application. Applications must include details such as the RCx cost and a savings goal.
  • Step 2 - Application Approval: Once your application is approved, you will receive a formal notification of approval. 
  • Step 3 - RetroCx Study: The study provider will conduct an on-site investigation, identify energy saving opportunities, and prepare the RCx Study Report for IPL review and approval.
  • Step 4 - Study Review and Measure Selection: Following IPL's approval of the study, the study provider will schedule a meeting with you and IPL to identify measures for implementation. Following this meeting, IPL will issue a rebate to the study provider for 30% of the cost of the study.
  • Step 5 - Implementation: Measure implementation must occur within 4 to 12 weeks of the study review meeting and is led by you (the customer) and your preferred team.
  • Step 6 - Measurement and Verification: IPL will confirm implementation and quantify energy performance in comparison to initial targets.
  • Step 7 - Post Implementation: You will receive a post-implementation rebate from IPL for $0.04/kWh based upon actual realized savings for measure implementation, as determined during Step 6. IPL then issues payment to the study provider for the remaining balance (up to 20%) of the study cost.

Additional Information

  • Interested in becoming an approved RCx Study Provider? Learn More
  • For more information, view the program terms and conditions or contact us at
  • Incentive values are subject to change. Details are for the 2019 program year and projects must be completed on or before December 31, 2019.
  • Program incentives are allotted on a calendar-year basis and are available on a first-come, first-served basis.
  • An incentive may not exceed the customer's cost of implementation net outside funding received, not including taxes, warranty fees, installation costs, or maintenance fees. IPL shall make the final determination regarding incentive amounts. An individual customer will be limited to $500,000 in IPL Business Energy Incentives in any calendar year.
  • IPL reserves the right to deny any rebate.
  • All IPL energy programs are subject to Indiana Utilities Regulatory Commission rules and regulations.