States › Illinois › Piatt County
Electric utilities serving Piatt County, Illinois
Utilities that list the county in their Form EIA-861 service territory for 2024, with each one's average price, bill and outage minutes.
Piatt County, Illinois, appears in the Form EIA-861 service territory of 4 utilities for 2024; Ameren Illinois Company, Corn Belt Energy Corporation and Eastern Illinois Elec Coop are the largest by residential customers statewide.
Their average residential prices ran from 15.26¢ to 17.14¢ per kilowatthour, with a median of 16.43¢, against a Illinois average of 15.87¢ and a US average of 16.48¢. Each price is the utility's figure for all of its Illinois customers, not for this county alone.
The median SAIDI they reported was 268.0 minutes per customer including major event days; the median among all Illinois utilities reporting was 131.9.
The Census Bureau estimates the county's population at 16,791. EIA does not publish customers by county, so which utility serves a given address has to be confirmed with the utility or the state utility commission.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Figures are for each utility's whole Illinois operation; EIA publishes nothing at county level.
Utilities and their 2024 figures
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Ameren Illinois Company mostly delivery | Investor-owned | 1,060,894 | 15.26¢ | $130.20 | 223.9 | 120.6 |
| Corn Belt Energy Corporation | Cooperative | 34,710 | 15.76¢ | $144.08 | 311.6 | 152.0 |
| Eastern Illinois Elec Coop | Cooperative | 11,115 | 17.10¢ | $211.56 | 268.0 | 194.4 |
| Coles-Moultrie Electric Coop | Cooperative | 8,456 | 17.14¢ | $191.87 | — | — |
Ordered by residential customers in Illinois. Short-form filers are small utilities that report only totals to EIA, so no residential price is available. A utility with no customers shown reported its retail sales elsewhere or delivers power that other companies bill for.
Against the state and the country
| Measure, 2024 | Utilities listing Piatt County | Illinois | United States |
|---|---|---|---|
| Average residential price per kWh | 16.43¢ median | 15.87¢ | 16.48¢ |
| Average monthly residential bill | $167.98 median | $109.99 | $142.26 |
| SAIDI, all events (minutes) | 268.0 median | 131.9 median | 184.5 median |
| SAIDI, without major event days | 152.0 median | 85.0 median | 99.8 median |
| Utilities counted | 4 | 79 | 1,413 |
Outage minutes reported
SAIDI for 2024 across each utility's whole system, including major event days (paler bars: only the figure without major event days was reported). Not a measure of outages in Piatt County itself.
Population: 16,791 (U.S. Census Bureau, Vintage 2025 estimate). Statewide, residential sales came to 3,526 kWh per resident in 2024.
Other Illinois counties
- Montgomery County 5
- Morgan County 4
- Moultrie County 6
- Ogle County 2
- Peoria County 2
- Perry County 3
- Pike County 3
- Pope County 2
- Pulaski County 3
- Putnam County 2
- Randolph County 4
- Richland County 4
All 102 counties and every Illinois utility
Questions and answers
Who provides electricity in Piatt County?
Ameren Illinois Company, Corn Belt Energy Corporation, Eastern Illinois Elec Coop and Coles-Moultrie Electric Coop list the county in their Form EIA-861 service territory for 2024. Territories overlap, and a utility may cover only a corner of the county.
What is the electricity price in Piatt County?
EIA has no county-level prices. The utilities serving the county reported average residential prices of 15.26¢ to 17.14¢ per kilowatthour across their Illinois customers in 2024; the state average was 15.87¢.
How reliable is power in Piatt County?
Reliability is reported per utility, not per county. The utilities listed reported a median of 268.0 minutes of interruption per customer in 2024 including major event days and 152.0 minutes excluding them.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861 for 2024, final release: service territory file (counties by utility), sales to ultimate customers, reliability and short form files. State and US averages: Form EIA-861M workbook. Population: U.S. Census Bureau. Public domain. To confirm the utility at an address, ask the utility or the state utility commission.