Independent profile. Kilowatt Atlas is not affiliated with Southwestern Electric Cooperative, does not use its logo or branding and cannot take payments, start service or look up accounts. Figures come from public federal data for 2025.
Residential customers
24 thousand
24,414 homes
Average price
15.37 cents
Illinois average 17.67
Average bill
$178.24
Per month at 1,160 kWh
Price rank
9 of 18
Lowest to highest in Illinois
Southwestern Electric Cooperative rates and average bill
Southwestern Electric Cooperative reported 24,414 residential customers on bundled service in 2025, using 1,160 kWh a month on average at 15.37 cents per kWh. Bundled means the utility supplies the energy and delivers it, so the price covers both. Among the 18 Illinois utilities with at least 10,000 bundled residential customers, Southwestern Electric Cooperative ranks 9 from the lowest price.
| Average | Cents per kWh | kWh per month | Monthly bill |
|---|---|---|---|
| Southwestern Electric Cooperative | 15.37 | 1,160 | $178.24 |
| Illinois (all utilities) | 17.67 | 717 | $126.59 |
| United States | 17.23 | 874 | $150.68 |
Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data), sales to ultimate customers. Price is revenue divided by sales and includes fixed charges.
Service area
EIA lists the counties where Southwestern Electric Cooperative has distribution equipment. That covers 11 counties in Illinois. A county can be served by more than one utility, so confirm your address with the utility or your bill.
Illinois (11 counties)
Bond, Clay, Clinton, Effingham, Fayette, Macoupin, Madison, Marion, Montgomery, Shelby, St Clair
Not sure who serves your address? Use find my electric company.
Reliability
For 2025, Southwestern Electric Cooperative reported an average of 195 minutes without power per customer and 1.68 interruptions per customer, with major event days left out. The typical interruption lasted about 116 minutes. For comparison, the median state averaged 127 minutes of outage per customer.
Southwestern Electric Cooperative had about 67 more minutes of outage per customer than the median state. The Illinois figure across its utilities was 62 minutes. One interruption lasting 116 minutes and 1.68 interruptions a year per customer add up to the 195 minute total.
Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data), reliability schedule, measured under IEEE 1366. Utilities define events slightly differently, so compare with care.
Rate options and rooftop solar
- Time-of-use pricing. Southwestern Electric Cooperative does not report a residential time-of-use program in its 2025 EIA filing. Ask the utility, because programs change. How time-of-use rates work.
- Rooftop solar and net metering. EIA does not show residential net-metered solar for Southwestern Electric Cooperative in 2025. How net metering works.
Who owns and regulates it
Owned by the members it serves. An elected board sets the rates, and members may receive capital credits when the co-op has margins to return.
For questions about state consumer protections, see the Illinois Commerce Commission.
Southwestern Electric Cooperative is an electric cooperative based in Illinois.
Southwestern Electric Cooperative operates in the MISO power market. Power markets set wholesale costs, but your retail rate is set by the rules described above.
Southwestern Electric Cooperative compared with Illinois
By residential customers, Southwestern Electric Cooperative ranks 6th of the 23 utilities that report homes in Illinois, with about 0.45% of the state's homes. At $178.24 a month, an average Southwestern Electric Cooperative home pays about $620 a year more than the Illinois average of $126.59, and uses 443 kWh a month more. Southwestern Electric Cooperative lists distribution equipment in 11 counties, so check your county and your bill before you assume it serves you.
Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data). Peers are other utilities of the same type in Illinois with at least 1,000 residential customers and a reported price.
Other Illinois utilities
| Utility | Type | Homes | Cents per kWh |
|---|---|---|---|
| Southwestern Electric Cooperative | Cooperative | 24,414 | 15.37 |
| City of Naperville | Municipal | 57,225 | 14.61 |
| Corn Belt Energy | Cooperative | 34,952 | 15.59 |
| Southeastern Illinois Electric Cooperative | Cooperative | 22,607 | 14.80 |
| Norris Electric Cooperative | Cooperative | 18,163 | 15.06 |
| Jo-Carroll Energy | Cooperative | 17,278 | 20.49 |
See every one on the electric companies in Illinois page.
Official site and where to get help
Kilowatt Atlas is not Southwestern Electric Cooperative and does not take payments, start service or manage accounts. To pay a bill, report an outage or start service, use the website, app or phone number printed on your bill. Be careful with search ads and lookalike sites that offer to pay your bill for a fee.
- Want to understand a line on your bill? Read how to read your electric bill.
- Think your bill is high? Try the bill checker.
- Illinois allows retail choice in part or all of the state. See the provider guide.
Southwestern Electric Cooperative questions
What is the average residential electric rate for Southwestern Electric Cooperative?
Southwestern Electric Cooperative residential customers on bundled service paid an average of 15.37 cents per kWh in 2025, with average use of 1,160 kWh a month and an average bill of $178.24 (EIA Form EIA-861). The Illinois average was 17.67 cents.
How many customers does Southwestern Electric Cooperative have?
EIA reports about 24,414 residential customers for Southwestern Electric Cooperative in 2025.
Who regulates Southwestern Electric Cooperative?
Owned by the members it serves. An elected board sets the rates, and members may receive capital credits when the co-op has margins to return. See the regulator for Illinois on the Illinois state page.
How reliable is Southwestern Electric Cooperative?
For 2025, Southwestern Electric Cooperative reported an average of 195 minutes of outage per customer and 1.68 interruptions per customer, excluding major event days (IEEE 1366). Utilities measure outages in slightly different ways, so compare with care.