IOU · Indiana · EIA 15470
Duke Energy Indiana, LLC
IOU · Indiana · 894K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 645 minutes/customer.
Reliability verdict
Duke Energy Indiana, LLC shows above-average chronic reliability in 2023: 98 minutes SAIDI excluding major events (645 minutes including them) across 894K customers.
- 645 min
- SAIDI 2023
- 1.48
- SAIFI 2023
- 98 min
- SAIDI ex-MED
- 894K
- 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 Duke Energy Indiana, LLC filings show
Duke Energy Indiana, LLC is an investor-owned utility operating in Indiana under EIA identifier 15470. It reports service to approximately 894,157 customer accounts and generated about $2.93 billion in annual electric revenue, with a service footprint spanning 428 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 Duke Energy Indiana, LLC customer experienced 644.8 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. SAIFI, the average number of outage events per customer, was 1.48 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 98.0 minutes, and the spread against the headline 644.8 indicates how much weather, versus routine infrastructure, drove the outage total.
With 4 consecutive years of EIA data (2020–2023), Duke Energy Indiana, LLC's reliability record can be judged on trend rather than one isolated year. SAIDI has increased from 278.7 to 644.8 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.
645 min/year per customer
Annual minutes without electric service (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Duke Energy Indiana, LLC from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Duke Energy Indiana, LLC SAIDI trend
Duke Energy Indiana, LLC vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
645 Higher than most fewer outage minutes than 13% 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 Duke Energy Indiana, LLC sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Duke Energy Indiana, LLC charges more per customer than 83% of them, and is more reliable (lower SAIDI) than 15% 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: $3,276/year · Latest SAIDI: 644.8 minutes/year.
SAIDI 2023 breakdown: 644.8 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 278.7 | 121.0 | 1.250 | 874,689 |
| 2021 | 203.2 | 127.1 | 1.114 | 862,431 |
| 2022 | 215.7 | 160.4 | 1.315 | 874,784 |
| 2023 | 644.8 | 98.0 | 1.484 | 886,225 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Duke Energy Indiana, LLC serves 428 ZIP codes in Indiana.
Frequently Asked Questions
How reliable is Duke Energy Indiana, LLC?
Duke Energy Indiana, LLC had a SAIDI of 644.8 minutes in 2023 including major weather events, but 98.0 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 Duke Energy Indiana, LLC?
Duke Energy Indiana, LLC is classified as a IOU serving Indiana.
How many customers does Duke Energy Indiana, LLC serve?
Duke Energy Indiana, LLC serves approximately 894,157 customers in Indiana.
How has Duke Energy Indiana, LLC's reliability changed over time?
Duke Energy Indiana, LLC 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
- 894,157
- Annual Revenue
- $2.93B
- EIA ID
- 15470
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Duke Energy Indiana, LLC. 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 (894K here), outside Indiana.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (644.8 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.