Southern Illinois Electric Co-op electricity rates
Electric cooperative · Illinois
Southern Illinois Electric Co-op is a member-owned electric cooperative, so its customers own it and elect its board, serving 11,216 homes in Illinois. Its residential customers pay an average of 18.75¢/kWh including fixed and delivery charges, 4% more than the U.S. average.
Rate basis: EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend. This utility files EIA's short form, which reports total sales only, so the rate covers all customer classes.
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Southern Illinois Electric Co-op bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $93.75 | $104.25 |
| 1,000 kWh | $187.50 | $151.50 |
| 1,500 kWh | $281.25 | $198.75 |
| 2,000 kWh | $375.00 | $246.00 |
*Farm and Home Service (effective 2012-02-01, $33.00/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
Southern Illinois Electric Co-op residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Farm and Home Service | 2012-02-01 | $33.00 | 14.25¢ first 500 kWh, 9.45¢ after |
| All Electric Residential Service | 2012-02-01 | $33.00 | 14.25¢ first 500 kWh, 9.45¢ first 1,500 kWh, 9.00¢ after |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Southern Illinois Electric Co-op rate history
2015–2025: +21% change in the average residential rate (14.61¢ → 17.66¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2019 | Southern Illinois Electric Co-op | Illinois avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 228 | 148 | 266 |
| Outages per customer (SAIFI) | 0.87 | 1.34 | |
| Outage minutes excluding major storms | 105 | 63 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across Southern Illinois Electric Co-op's counties, customers averaged 10 hr 43 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Pope | 1,487 | 39 | 749 | 2025-01-07 |
| Williamson | 879 | 54 | 10,894 | 2025-01-06 |
| Johnson | 739 | 46 | 1,424 | 2025-04-14 |
| Union | 600 | 22 | 4,735 | 2025-03-13 |
| Jackson | 517 | 62 | 6,017 | 2025-01-06 |
| Alexander | 448 | 14 | 737 | 2025-03-13 |
| Pulaski | 241 | 22 | 1,274 | 2025-03-13 |
| Massac | 35 | 7 | 728 | 2025-07-29 |
Southern Illinois Electric Co-op service area
Southern Illinois Electric Co-op serves 8 counties in Illinois and 4 ZIP codes.
Alexander, Jackson, Johnson, Massac, Pope, Pulaski, Union, Williamson
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 0 reported |
Southern Illinois Electric Co-op at a glance
| Ownership | Electric cooperative |
| Services | — |
| Retail revenue (2025) | $32,112,000 |
| Electricity sold (2025) | 181,886 MWh |
| Balancing authority | MISO |
| EIA utility ID | 17631 |
Other utilities in Illinois
Frequently asked questions
What is Southern Illinois Electric Co-op's electricity rate?
Southern Illinois Electric Co-op residential customers pay an average of 18.75¢ per kWh, all charges included (EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend). That's 0% below the Illinois average of 18.79¢ and 4% above the U.S. average.
What is the average Southern Illinois Electric Co-op electric bill?
About $253 a month. The average Southern Illinois Electric Co-op home uses 1,351 kWh a month. At 1,000 kWh the bill would be about $188.
How many customers does Southern Illinois Electric Co-op have?
Southern Illinois Electric Co-op serves 11,216 residential customers in Illinois, across 8 counties.
How reliable is Southern Illinois Electric Co-op?
In 2019, the average Southern Illinois Electric Co-op customer was without power for 3 hr 48 min (SAIDI) over undefined interruptions (SAIFI), including major storms. Excluding major event days it was 105 min. The Illinois average was 2 hr 28 min and the U.S. average 4 hr 26 min.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with Southern Illinois Electric Co-op before making decisions.