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City hears update that electric aggregation rate may rise starting June
Summary
Mount Vernon officials were told the city’s electric aggregation rate could increase from 9.1¢/kWh to roughly 10–13¢/kWh when a new program year begins in June 2025; officials said final rates and opt‑out details will be available after Ameren posts its rates in late April or early May.
Mayor John Lewis heard from Jordan Haarmann of AGE on April 7 about expected changes to Mount Vernon’s electric aggregation program that could affect residential electric bills beginning in June.
Haarmann told the council the current aggregation rate is 9.1 cents per kilowatt‑hour and preliminary indications suggest the program rate for June 2025–June 2026 could be between 10 and 13 cents per kilowatt‑hour. He said the final aggregation rate will not be known until Ameren posts its new rate in late April or early May; based on the midrange of those figures, the city estimates the change could amount to roughly a $26 increase on a typical resident’s monthly bill.
The update rooted the change in market volatility and capacity uncertainties, and Haarmann said state incentives for solar development have contributed to upward pressure on energy prices. Council Member Joe Gliosci asked why aggregation was no longer reliably delivering a lower price than Ameren; Haarmann said market volatility and the timing of solar credits were factors and that, over time, solar credits should yield greater savings.
Council Member Donte Moore and Mayor Lewis emphasized the need to help residents who rely on fixed incomes. Moore asked about opt‑out procedures if Ameren’s posted rate is lower than the aggregation rate; Haarmann said AGE will work with the city to notify residents and provide guidance on how to opt out. Mayor Lewis said the city would likely need to make staff available to assist residents with opting out or understanding new bills.
The council did not vote on the aggregation program at the meeting; Haarmann and city staff said they will inform the public once Ameren’s new rate is published.
