Energy Storage System Portfolio Standard
Quick Summary
Illinois is requiring the Illinois Power Agency to procure at least 1,038 MW of utility-scale energy storage by 2026, with a goal of 3,000 MW total in service by the end of 2030. While this program targets large storage projects rather than residential systems, the expansion of grid-scale storage will support a more reliable and affordable electricity supply for Illinois residents.
AI-generated summary • Updated 7/12/2026
Program Details
- Program ID
- 22801
- Last Updated
- 1/22/2026
Eligibility
Program Summary
Public Act 104-0458, the Clean and Reliable Grid Affordability Act, requires the Illinois Power Agency (IPA) to develop an energy storage resources procurement plan. The IPA must conduct an initial procurement for at least 1,038 MW of standalone storage by August 26, 2026. The capacity for this procurement will be split between the MISO and PJM zones, with 450 MW in MISO and 588 MW in PJM. The contracted storage resources must achieve commercial operation before December 31, 2029, or another date proposed by the IPA that is not later than December 31, 2030.The IPA must then conduct additional procurements in 2027 and 2028 so that a cumulative amount of 3,000 MW of storage enters service by December 31, 2030 (subject to conditions for delay due to interconnection or permitting issues).
Contact & Resources
Please verify current program details with the administering agency before making any financial decisions.