Illinois Attorney General Kwame Raoul has secured a significant victory for consumers in central and southern Illinois, with a $38 million settlement from a power market manipulation case involving Dynegy Inc., now a subsidiary of Vistra Corporation. This settlement follows an extensive investigation and litigation period spearheaded by Raoul's office and marks a decisive win for the affected electricity customers. According to a statement by the attorney general's office, some Ameren Illinois customers can expect to see a credit applied to their power bills as early as December.
The credits are part of an agreement resolved by the Federal Energy Regulatory Commission (FERC) in August 2025, ending a 10-year-long scrutiny of the 2015 electricity capacity auction. The auction in question resulted in inflated capacity prices—40 times higher than in other zones, and nearly nine times the prior year's price. "Dynegy manipulated the market to overcharge electric customers by taking advantage of rules that have already been deemed unjust and unreasonable," Raoul stated. Reflection of this sentiment by the FERC has led to a final approval of the settlement that intends to finally remunerate consumers for their losses.
Under the settlement's terms, approximately $33.5 million will be refunded to Ameren residential and small commercial customers who are on Basic Generation Service or Real Time Pricing supply rates. This refund will manifest as one-time credits on their electricity bills, with the amount based on each customer's energy usage. Additional beneficiaries of the settlement include Southwest Electric Cooperative, which will receive $1.14 million, the Illinois Municipal Electric Agency, getting $1.33 million, and members of the Illinois Industrial Energy Consumers, who will receive $2 million.
The case has been a complex one, originally filed by Raoul's office, Public Citizen, Southwestern Electric Cooperative, and the Illinois Industrial Energy Consumers back in 2015. They alleged that the MISO price was unjust, unreasonable, and the direct result of unbridled market power by Dynegy. Despite an initial dismissal from FERC, the United States Court of Appeals overturned that decision, enabling proceedings to be sent back for a thorough investigation into the "starkly anomalous results." The eventual order for Dynegy to enter settlement talks in 2024 directly led to the finalized settlement.
It's important to note that customers who receive their electricity through suppliers independent of Ameren or through their municipality were not subject to the inflated price and are thus not eligible for a refund. Those interested in the case's management can look to the Attorney General’s Public Utilities Bureau, handled by Bureau Chief Susan L. Satter and Senior Assistant Attorney General Scott Metzger.
