Southeastern IL Elec Coop, Inc
Cooperative electric utility · Illinois · #612 of 3,199 U.S. utilities by customers · EIA utility #17585
Southeastern IL Elec Coop, Inc is a cooperative electric utility serving 25,186 customers in Illinois. In 2025 it sold 763 gigawatt-hours of electricity for $99.17M in revenue, an average realized rate of 12.99¢ per kWh across all customer classes and 14.80¢ per kWh for residential customers. Its reported service territory covers 10 counties. EIA records its activities as: distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 22,607 | 331 | $49.04M | 14.80¢ | |
| Commercial | 2,555 | 89.2 | $13.29M | 14.91¢ | |
| Industrial | 24 | 343 | $36.83M | 10.75¢ | |
| Total | 25,186 | 763 | $99.17M | 12.99¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (1,222 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 24,770 | 772 | $82.42M | 12.28¢ |
| 2022 | 24,907 | 762 | $82.78M | 12.25¢ |
| 2023 | 24,796 | 722 | $86.21M | 13.66¢ |
| 2024 | 25,188 | 734 | $92.54M | 14.47¢ |
| 2025 | 25,186 | 763 | $99.17M | 14.80¢ |
Reliability (2025)
Average outage time (SAIDI): 2,214 minutes per customer per year
Average outages (SAIFI): 3.95 per customer
Average restoration time (CAIDI): 561 minutes
As reported for Illinois under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 788 GWh
Winter peak demand: 197 MW
Energy losses: 3.0% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 0.0% of 25,186 meters
Customer-sited generation (net metering): 333 installations, 4.8 MW of capacity
Counties served
Franklin, ILGallatin, ILHamilton, ILHardin, ILJohnson, ILMassac, ILPope, ILSaline, ILWhite, ILWilliamson, IL
Other large utilities in Illinois
- Commonwealth Edison Co - 3,261,563 customers, residential 17.71¢
- Ameren Illinois Company - 663,709 customers, residential 16.70¢
- MC Squared Energy Services, LLC - 293,923 customers, residential 8.14¢
- Homefield Energy - 160,102 customers, residential 10.64¢
- Energy Services Providers, Inc - 90,477 customers, residential 13.01¢
- Just Energy Solutions Inc. - 80,538 customers, residential 11.33¢
- City of Springfield - (IL) - 70,871 customers, residential 13.09¢
- Residents Energy, LLC - 69,834 customers, residential 17.34¢
All Illinois utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #17585 in the EIA frame.