2025 Block Energy (AIC, ComEd, and MEC) and Capacity (AIC) RFPs

The Illinois Power Agency (IPA) conducted a Fall 2025 Block Energy and Capacity (BEC) RFP for the procurement of wholesale power and capacity products. This RFP sought to procure monthly on-peak and off-peak standard block forward energy products as well as combinations for Ameren Illinois Company (AIC), Commonwealth Edison Company (ComEd), and MidAmerican Energy Company (MEC). Additionally, the RFP included procurement of seasonal MISO-Delivered and Financially-Settled Zonal Resource Credit (ZRC) capacity products for AIC for delivery periods starting June 1, 2026 and June 1, 2027. The supply period for standard block forward products ran from June 1, 2025 to May 31, 2028.

Key dates included a bidder information webcast held on July 24, 2025, with final RFP rules and target volumes released in late July 2025. Bidding training occurred in August 2025, with the bid date for energy products in September 2025 and capacity products in October 2025. The Illinois Commerce Commission (ICC) rendered its decision on energy product procurement events on September 11, 2025, and on AIC capacity products on October 2, 2025. Winning bidders were required to execute supplier contracts and meet creditworthiness requirements by the third business day after the ICC decision.

The RFP utilized a sealed, binding commitment bidding process with pay-as-bid settlement. Bidders were required to be PJM members in good standing (Affiliate or Voting Members) and/or Certified Market Participants in MISO. Products were expressed in 25 megawatt (MW) blocks for energy and individual Zonal Resource Credits (ZRCs) for capacity, with one ZRC representing one megawatt of seasonal accredited capacity. Bidders were required to submit comprehensive financial information, fuel mix reports for winning bids, and meet various collateral requirements through cash, letters of credit, or guarantees.