Ameren: Outages & Reliability
Ameren appears in our live feeds only while it has outages, and none are showing as of October 7, 2026 09:00 UTC.
Ameren is an electric utility serving 93 counties in Illinois and Missouri. Ameren did not report standardized reliability metrics to the EIA (common for smaller or short-form utilities), but its service territory and outage history are tracked below.
Ameren only appears in our feeds while it has outages, so no outages showing here may just mean none were reported. How we see utilities →
Official reliability
US EIACounties served by Ameren (93)
Service territory reported to EIA-861; each links to live outage status and history.
- Adams County, IL
- Brown County, IL
- Bureau County, IL
- Cass County, IL
- Champaign County, IL
- Clark County, IL
- Clinton County, IL
- Coles County, IL
- Crawford County, IL
- De Witt County, IL
- Douglas County, IL
- Edgar County, IL
- Effingham County, IL
- Fayette County, IL
- Ford County, IL
- Franklin County, IL
- Fulton County, IL
- Gallatin County, IL
- Greene County, IL
- Hancock County, IL
- Henderson County, IL
- Henry County, IL
- Iroquois County, IL
- Jackson County, IL
- Jefferson County, IL
- Jersey County, IL
- Johnson County, IL
- Knox County, IL
- LaSalle County, IL
- Lawrence County, IL
- Logan County, IL
- Macon County, IL
- Macoupin County, IL
- Madison County, IL
- Marion County, IL
- Marshall County, IL
- McDonough County, IL
- McLean County, IL
- Menard County, IL
- Mercer County, IL
- Montgomery County, IL
- Morgan County, IL
- Peoria County, IL
- Perry County, IL
- Piatt County, IL
- Pike County, IL
- Putnam County, IL
- Randolph County, IL
- Richland County, IL
- Saline County, IL
- Sangamon County, IL
- Scott County, IL
- Shelby County, IL
- St. Clair County, IL
- Stark County, IL
- Tazewell County, IL
- Union County, IL
- Vermilion County, IL
- Warren County, IL
- Washington County, IL
- White County, IL
- Williamson County, IL
- Woodford County, IL
- Callaway County, MO
- Camden County, MO
- Cape Girardeau County, MO
- Clay County, MO
- Clinton County, MO
- Cole County, MO
- Cooper County, MO
- Daviess County, MO
- Franklin County, MO
- Gasconade County, MO
- Iron County, MO
- Jefferson County, MO
- Lewis County, MO
- Lincoln County, MO
- Linn County, MO
- Livingston County, MO
- Miller County, MO
- Mississippi County, MO
- Montgomery County, MO
- Morgan County, MO
- Pemiscot County, MO
- Pike County, MO
- Randolph County, MO
- Scott County, MO
- St. Charles County, MO
- St. Francois County, MO
- St. Louis County, MO
- St. Louis city, MO
- Warren County, MO
- Washington County, MO
What causes Ameren outages
Share of outage-time by reported cause across the counties it serves (territory-wide, may include other utilities in shared counties).
Ameren: FAQ
- How reliable is Ameren?
- Ameren did not report standardized SAIDI/SAIFI reliability metrics to the EIA. Outage history for the counties it serves is available on their individual pages.
- How many customers does Ameren serve?
- Ameren serves 93 counties across Illinois and Missouri, per its EIA-861 service territory filing.
- Where does Ameren provide power?
- Ameren operates in Illinois, Missouri. The full list of counties served is below, each linked to its live outage status.
Reliability metrics (SAIDI/SAIFI) and service territory from the US EIA Form 861. SAIDI/SAIFI are IEEE-standard, including major event days. Primary state: Illinois.
Data from EIA Form 861 (utility reliability) and DOE/ORNL ODIN, every source we read. Live data as of .