IOU · Texas · EIA 44372
Oncor Electric Delivery Company LLC
IOU · Texas. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 326 minutes/customer.
Reliability verdict
Oncor Electric Delivery Company LLC shows above-average chronic reliability in 2023: 62 minutes SAIDI excluding major events (326 minutes including them).
- 326 min
- SAIDI 2023
- 1.52
- SAIFI 2023
- 62 min
- SAIDI ex-MED
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 Oncor Electric Delivery Company LLC filings show
Oncor Electric Delivery Company LLC is an investor-owned utility operating in Texas under EIA identifier 44372. Customer count is not reported in the current EIA filing. Investor ownership puts this utility under the regulatory authority of the state public utility commission, which reviews its rate requests and reliability record.
In 2023, the average Oncor Electric Delivery Company LLC customer experienced 325.5 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. Over the same period, SAIFI (outage events per customer) was 1.52, putting the typical customer at roughly 2 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 62.4 minutes; the difference from the headline 325.5 shows how much of the outage total came from weather rather than everyday grid issues.
With 4 consecutive years of EIA data (2020–2023), Oncor Electric Delivery Company LLC's reliability record can be judged on trend rather than one isolated year. SAIDI has improved from 487.7 to 325.5 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.
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.
326 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 Oncor Electric Delivery Company LLC from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Oncor Electric Delivery Company LLC SAIDI trend
Oncor Electric Delivery Company LLC vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
326 Around the middle fewer outage minutes than 28% 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
SAIDI 2023 breakdown: 325.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI |
|---|---|---|---|
| 2020 | 487.7 | 241.8 | 3.620 |
| 2021 | 558.8 | 68.8 | 2.030 |
| 2022 | 231.9 | 67.5 | 1.620 |
| 2023 | 325.5 | 62.4 | 1.520 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Frequently Asked Questions
How reliable is Oncor Electric Delivery Company LLC?
Oncor Electric Delivery Company LLC had a SAIDI of 325.5 minutes in 2023 including major weather events, but 62.4 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 storm impacts, this beats the national average, a sign of above-average reliability.
What type of utility is Oncor Electric Delivery Company LLC?
Oncor Electric Delivery Company LLC is classified as a IOU serving Texas.
How many customers does Oncor Electric Delivery Company LLC serve?
Oncor Electric Delivery Company LLC serves customers in Texas. Exact customer count data is not available in the current EIA filing.
How has Oncor Electric Delivery Company LLC's reliability changed over time?
Oncor Electric Delivery Company 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
- Texas
- Customers
- -
- EIA ID
- 44372
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 · methodology.