Cooperative · Illinois · EIA 17697
Southwestern Electric Coop Inc - (IL)
Cooperative · Illinois · 25K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 375 minutes/customer.
Reliability verdict
Southwestern Electric Coop Inc - (IL) shows near-benchmark chronic reliability in 2023: 259 minutes SAIDI excluding major events across 25K customers.
- 375 min
- SAIDI 2023
- 2.74
- SAIFI 2023
- 259 min
- SAIDI ex-MED
- 25K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: long interruption minutes vs the 911 utility cohort (>258 min tercile cut).
What long-outage Southwestern Electric Coop Inc - (IL) filings show
Southwestern Electric Coop Inc - (IL) is a member-owned electric cooperative operating in Illinois under EIA identifier 17697. It reports service to approximately 25,140 customer accounts and generated about $0.06 billion in annual electric revenue, with a service footprint spanning 51 ZIP codes. As a cooperative, its governance is accountable to its ratepayer-members rather than shareholders, which often shapes rate-setting and reinvestment priorities.
In 2023, the average Southwestern Electric Coop Inc - (IL) customer experienced 374.5 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That lands within the usual 120–180 minute national benchmark band, roughly on par with typical U.S. distribution-utility performance. The SAIFI figure, which tracks average outage events per customer, came in at 2.74 for the same period, meaning customers statistically saw about 3 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 258.6 minutes, the gap between that figure and the headline 374.5 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Southwestern Electric Coop Inc - (IL), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that span, SAIDI rose from 201.5 to 374.5 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
375 min/year per customer
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Southwestern Electric Coop Inc - (IL) from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Southwestern Electric Coop Inc - (IL) SAIDI trend
Southwestern Electric Coop Inc - (IL) vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
375 Higher than most fewer outage minutes than 24% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
Price vs. reliability
Where Southwestern Electric Coop Inc - (IL) sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Southwestern Electric Coop Inc - (IL) charges more per customer than 43% of them, and is more reliable (lower SAIDI) than 27% of them, placing it in the quadrant where it pays less and is less reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,434/year · Latest SAIDI: 374.5 minutes/year.
SAIDI 2023 breakdown: 374.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 201.5 | 188.0 | 1.510 | 23,618 |
| 2021 | 236.4 | 225.8 | 2.530 | 23,848 |
| 2022 | 645.6 | 431.6 | 3.449 | 24,012 |
| 2023 | 374.5 | 258.6 | 2.740 | 25,140 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Southwestern Electric Coop Inc - (IL) serves 51 ZIP codes in Illinois.
Frequently Asked Questions
How reliable is Southwestern Electric Coop Inc - (IL)?
Southwestern Electric Coop Inc - (IL) had a SAIDI of 374.5 minutes in 2023. Leaving aside major weather events, that figure sits close to the national average.
What type of utility is Southwestern Electric Coop Inc - (IL)?
Southwestern Electric Coop Inc - (IL) is classified as a Cooperative serving Illinois.
How many customers does Southwestern Electric Coop Inc - (IL) serve?
Southwestern Electric Coop Inc - (IL) serves approximately 25,140 customers in Illinois.
How has Southwestern Electric Coop Inc - (IL)'s reliability changed over time?
Southwestern Electric Coop Inc - (IL) has 4 years of reliability data (2020-2023). This utility's SAIDI has stayed fairly flat over the period. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Cooperative
- State
- Illinois
- Customers
- 25,140
- Annual Revenue
- $0.06B
- EIA ID
- 17697
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Southwestern Electric Coop Inc - (IL). Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (25K here), outside Illinois.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (374.5 here), outside Illinois, excluding the customer-peer set.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.