Municipal · Illinois · EIA 17828
City of Springfield - (IL)
Municipal · Illinois · 70K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 62 minutes/customer.
Reliability verdict
City of Springfield - (IL) shows above-average chronic reliability in 2023: 62 minutes SAIDI across 70K customers.
- 62 min
- SAIDI 2023
- 0.89
- SAIFI 2023
- 70K
- 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 Springfield - (IL) filings show
City of Springfield - (IL) is a municipally-owned utility operating in Illinois under EIA identifier 17828. It reports service to approximately 70,331 customer accounts and generated about $0.19 billion in annual electric revenue, with a service footprint spanning 29 ZIP codes. Municipal ownership means a local board or city council typically oversees this utility, and it is exempt from federal income tax.
In 2023, the average City of Springfield - (IL) customer experienced 62.5 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. SAIFI, the average number of outage events per customer, was 0.89 for the same period, so customers statistically faced roughly 1 distinct interruption that year.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for City of Springfield - (IL), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI climbed from 54.0 to 62.5 minutes over that window, a shift that can point to 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.
62 outage minutes per customer annually
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 Springfield - (IL) from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
City of Springfield - (IL) SAIDI trend
City of Springfield - (IL) vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
62 Among the lowest fewer outage minutes than 78% 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 Springfield - (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 Springfield - (IL) charges more per customer than 57% of them, and is more reliable (lower SAIDI) than 81% 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: $2,642/year · Latest SAIDI: 62.5 minutes/year.
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIFI |
|---|---|---|
| 2020 | 54.0 | 0.814 |
| 2021 | 125.8 | 1.309 |
| 2022 | 57.8 | 0.848 |
| 2023 | 62.5 | 0.887 |
Service Area
City of Springfield - (IL) serves 29 ZIP codes in Illinois.
Frequently Asked Questions
How reliable is City of Springfield - (IL)?
City of Springfield - (IL) had a SAIDI of 62.5 minutes in 2023. Leaving aside major weather events, that figure comes in under the national average, pointing to above-average reliability.
What type of utility is City of Springfield - (IL)?
City of Springfield - (IL) is classified as a Municipal serving Illinois.
How many customers does City of Springfield - (IL) serve?
City of Springfield - (IL) serves approximately 70,331 customers in Illinois.
How has City of Springfield - (IL)'s reliability changed over time?
City of Springfield - (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
- Municipal
- State
- Illinois
- Customers
- 70,331
- Annual Revenue
- $0.19B
- EIA ID
- 17828
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for City of Springfield - (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 (70K here), outside Illinois.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (62.5 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.