Illinois Power Agency Updates Renewable Portfolio Standard Budget Forecast

The Illinois Power Agency (IPA) has released an updated Renewable Portfolio Standard (RPS) Budget Forecast. This RPS Budget Forecast is the second update released by the Agency since the filing of the 2026 Long-Term Renewable Resources Procurement Plan.

The RPS Budget Model that supports the RPS Budget Forecast has been updated with refreshed underlying data inputs and drivers, including corrections to and enhancements of modeling methodology across several Illinois Shines project categories. This update also incorporates new set-asides and program changes mandated by P.A. 104-0458. Further updates and corrections are discussed within the accompanying Memo.

With these updates and corrections, as discussed in the accompanying Memo, the total modeled REC spending has decreased as compared to the preceding April 2026 RPS Budget Forecast. As a result, the RPS budget is now expected to reach a deficit in DY 2029-30 rather than the previously forecast DY 2027-28. While a deficit is still anticipated in the medium term, these updates, in combination with the changes contained in P.A. 104-0458, result in additional time before the anticipated deficit in the RPS Budget.

The Agency invites stakeholders to review the full RPS Budget Model along with the accompanying Memo detailing updates to the model. Questions regarding the RPS Budget materials may be sent to [email protected].