SAIDI
62 min per year
Average outage minutes (2023)
What This Utility Data Tells You
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.
SAIFI
0.89 interruptions/yr
Outage frequency (2023)
Customers
70,331
Illinois service territory
SAIDI vs. National Average (180 min) 15.6%
62 outage minutes per customer annually
Power-out minutes per year (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 54.0 | - | 0.814 | - |
| 2021 | 125.8 | - | 1.309 | - |
| 2022 | 57.8 | - | 0.848 | - |
| 2023 | 62.5 | - | 0.887 | - |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
City of Springfield - (IL) serves 29 ZIP codes in Illinois.
6270162702627036270462705627066270862712627156271662719627216272262726627366273962756627576276262763627666276762769627766278162786627916279462796
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
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.
Every figure on PlainUtility is rendered directly from the U.S. Energy Information Administration's Form 861 reliability data, no number is typed in by an editor. This utility's SAIDI/SAIFI figures are rendered directly from EIA Form 861 reliability files. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2020-2023.