Energy Efficiency at Waste Water Treatment Plants

Public Water Infrastructure Energy Assessments

Illinois EPA's Office of Energy has teamed up with the Smart Energy Design Assistance Center (SEDAC) and the Illinois Sustainable Technology Center (ISTC) to help local municipalities save energy and reduce the cost of wastewater treatment and supplying public water. SEDAC and ISTC will provide no-cost energy usage assessments to publicly owned water facilities.

The cost of wastewater treatment and water supply can be a significant burden for municipalities, especially when the infrastructure is aged or inappropriately sized for the community it serves. This partnership is designed to help municipalities identify efficiency improvements to their systems and potential cost savings for their communities.

The final assessment reports break down recommendations for energy efficiency improvements at each facility and include upfront costs for equipment upgrades or retrofits, estimated time for return of investment, and savings resulting from upgrades and retrofits. Similar assessments would ordinarily cost municipalities between $6,000 and $12,000. To learn more about the program or eligibility, our partnership with SEDAC and ISTC, or to access the program application, visit SEDAC's Public Water Program webpage or ISTC’s Public Water Efficiency Program webpage.

Waste Water Treatment Plant (WWTP) Energy Efficiency Grant

​To supplement the WWTP Energy Use Assessments, the IEPA Office of Energy provides grant funding for energy efficiency improvements at publicly owned WWTPs. Eligible applicants must have completed a third-party energy assessment within the last 5 years. The Notice of Funding Opportunity for the WWTP Energy Efficiency Grant is currently closed. However, the links to the Notice of Funding Opportunity (NOFO) and other required funding documents are provided below for general information and budget planning purposes. Outside of the time of year when the NOFO opens, the content of the NOFO is unlikely to change substantially with the next funding round. This webpage will be updated when a new funding opportunity is announced.

For questions about Office of Energy WWTP Energy Efficiency program, please send an email to or call 217-782-0513.

2020 WWTP Energy Efficiency Grant NOFO – CLOSED


Wastewater Treatment Plant Energy Efficiency Grant (for example purposes only)

Grant Process Checklist

Waste Water Uniform Grant Application

Grant Accountability and Transparency Act

Grantee Pre-Award Requirements

If you are having trouble opening any of the pdf documents, please right-click the document link and choose “save as,” then open the downloaded file with Acrobat Reader.

 Listserv Sign-up

​Please enter your email into the listserv form below if you would like to receive future updates about our Wastewater Energy Assessment Program and Grant Opportunities. You will receive a confirmation e-mail with a link that you will need to click to confirm addition of your name to the list.