IOU · Indiana · EIA 17633
Southern Indiana Gas & Elec Co
IOU · Indiana · 152K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 451 minutes/customer.
Reliability verdict
Southern Indiana Gas & Elec Co shows above-average chronic reliability in 2023: 80 minutes SAIDI excluding major events (451 minutes including them) across 152K customers.
- 451 min
- SAIDI 2023
- 1.57
- SAIFI 2023
- 80 min
- SAIDI ex-MED
- 152K
- 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 Southern Indiana Gas & Elec Co filings show
Southern Indiana Gas & Elec Co is an investor-owned utility operating in Indiana under EIA identifier 17633. It reports service to approximately 151,780 customer accounts and generated about $0.57 billion in annual electric revenue, with a service footprint spanning 73 ZIP codes. Because it is investor-owned, the state public utility commission oversees its rate cases and reliability performance rather than a local board.
In 2023, the average Southern Indiana Gas & Elec Co customer experienced 450.5 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that keeps this utility below the typical 120–180 minute national benchmark, consistent with a well-hardened distribution system and fast restoration crews. The SAIFI figure, which tracks average outage events per customer, came in at 1.57 for the same period, meaning customers statistically saw about 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 79.8 minutes, the gap between that figure and the headline 450.5 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Southern Indiana Gas & Elec Co, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI climbed from 121.9 to 450.5 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.
451 minutes per customer per year
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Southern Indiana Gas & Elec Co from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Southern Indiana Gas & Elec Co SAIDI trend
Southern Indiana Gas & Elec Co vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
451 Higher than most fewer outage minutes than 20% 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 Southern Indiana Gas & Elec Co sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Southern Indiana Gas & Elec Co charges more per customer than 92% of them, and is more reliable (lower SAIDI) than 22% of them, placing it in the quadrant where it pays more but is LESS reliable, a premium price without a reliability payoff. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $3,758/year · Latest SAIDI: 450.5 minutes/year.
SAIDI 2023 breakdown: 450.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI |
|---|---|---|---|
| 2020 | 121.9 | 78.4 | 1.000 |
| 2021 | 78.6 | 69.7 | 0.870 |
| 2022 | 454.3 | 103.4 | 1.820 |
| 2023 | 450.5 | 79.8 | 1.570 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Southern Indiana Gas & Elec Co serves 73 ZIP codes in Indiana.
Frequently Asked Questions
How reliable is Southern Indiana Gas & Elec Co?
Southern Indiana Gas & Elec Co had a SAIDI of 450.5 minutes in 2023 including major weather events, but 79.8 minutes excluding them (the IEEE-standard day-to-day reliability measure, the difference points to a major storm that year rather than an ongoing problem). Excluding major weather events, this is below the national average, indicating above-average reliability.
What type of utility is Southern Indiana Gas & Elec Co?
Southern Indiana Gas & Elec Co is classified as a IOU serving Indiana.
How many customers does Southern Indiana Gas & Elec Co serve?
Southern Indiana Gas & Elec Co serves approximately 151,780 customers in Indiana.
How has Southern Indiana Gas & Elec Co's reliability changed over time?
Southern Indiana Gas & Elec Co 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
- IOU
- State
- Indiana
- Customers
- 151,780
- Annual Revenue
- $0.57B
- EIA ID
- 17633
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Southern Indiana Gas & Elec Co. 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 (152K here), outside Indiana.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (450.5 here), outside Indiana, 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.