Investor Owned utility · · MO
Ameren Illinois Company
In 2025, the average Ameren Illinois Company customer in Illinois was without power for 287 minutes (4.8 hours).
Outage minutes per customer 287min 2025, including major storms
Excluding major storm days 130min The everyday reliability of the network
Outages per customer a year 1.19 SAIFI, 2025
Residential price 16.7¢/kWh 2025
Reliability
Minutes in the dark, year by year
Average minutes without power per customer in Illinois (SAIDI), with and without major event days, against the median Illinois utility.
Price
Residential cents per kWh
Revenue from full-service residential customers divided by their sales, as reported to the EIA.
Territory
Counties served
Counties where Ameren Illinois Company reports customers. Open one for its full outage history.
Illinois
AdamsAlexanderBondBrownBureauCalhounCassChampaignChristianClarkClayClintonColesCrawfordCumberlandDe WittDouglasEdgarEdwardsEffinghamFayetteFordFranklinFultonGallatinGreeneHancockHendersonHenryIroquoisJacksonJasperJeffersonJerseyJohnsonKendallKnoxLaSalleLawrenceLivingstonLoganMaconMacoupinMadisonMarionMarshallMasonMassacMcDonoughMcLeanMenardMercerMonroeMontgomeryMorganMoultriePeoriaPerryPiattPikePulaskiPutnamRandolphRichlandSalineSangamonSchuylerScottShelbySt. ClairStarkTazewellUnionVermilionWabashWarrenWashingtonWayneWhiteWilliamsonWoodford
Source: U.S. Energy Information Administration, Form EIA-861, 2018–2025. Reliability uses the IEEE 1366 standard where the utility reports it. Residential customers in 2025: 1,062,810.