Municipal · Illinois · EIA 17860
City of St Charles - (IL)
Municipal · Illinois · 16K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 58 minutes/customer.
Reliability verdict
City of St Charles - (IL) shows above-average chronic reliability in 2023: 57 minutes SAIDI excluding major events across 16K customers.
- 58 min
- SAIDI 2023
- 0.56
- SAIFI 2023
- 57 min
- SAIDI ex-MED
- 16K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: short interruption minutes vs the 911 utility cohort (≤96 min tercile cut).
What short-outage City of St Charles - (IL) filings show
City of St Charles - (IL) is a municipally-owned utility operating in Illinois under EIA identifier 17860. It reports service to approximately 16,346 customer accounts and generated about $0.06 billion in annual electric revenue, with a service footprint spanning 6 ZIP codes. Being municipally owned, the utility answers to a local board or city council rather than a state commission, and carries a federal income tax exemption.
In 2023, the average City of St Charles - (IL) customer experienced 58.5 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. Over the same period, SAIFI (outage events per customer) was 0.56, putting the typical customer at roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 56.7 minutes, the gap between that figure and the headline 58.5 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for City of St Charles - (IL), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 30.2 to 58.5 minutes, which may reflect either worsening weather exposure or delayed grid modernization.
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.
58 min/year per customer
Power-out minutes per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for City of St Charles - (IL) from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
City of St Charles - (IL) SAIDI trend
City of St Charles - (IL) vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
58 Among the lowest fewer outage minutes than 79% 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 City of St Charles - (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, City of St Charles - (IL) charges more per customer than 89% of them, and is more reliable (lower SAIDI) than 82% of them, placing it in the quadrant where it pays more and is more reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $3,596/year · Latest SAIDI: 58.5 minutes/year.
SAIDI 2023 breakdown: 58.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI |
|---|---|---|---|
| 2020 | 30.2 | 30.2 | 0.793 |
| 2021 | 60.6 | 13.1 | 0.904 |
| 2022 | 19.8 | 10.4 | 1.245 |
| 2023 | 58.5 | 56.7 | 0.560 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
City of St Charles - (IL) serves 6 ZIP codes in Illinois.
Frequently Asked Questions
How reliable is City of St Charles - (IL)?
City of St Charles - (IL) had a SAIDI of 58.5 minutes in 2023. Excluding major weather events, this is below the national average, indicating above-average reliability.
What type of utility is City of St Charles - (IL)?
City of St Charles - (IL) is classified as a Municipal serving Illinois.
How many customers does City of St Charles - (IL) serve?
City of St Charles - (IL) serves approximately 16,346 customers in Illinois.
How has City of St Charles - (IL)'s reliability changed over time?
City of St Charles - (IL) has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Municipal
- State
- Illinois
- Customers
- 16,346
- Annual Revenue
- $0.06B
- EIA ID
- 17860
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for City of St Charles - (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 (16K here), outside Illinois.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (58.5 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.