SAIDI
546 min per year
Average outage minutes (2023)
What This Utility Data Tells You
Entergy Texas Inc. is a investor-owned utility operating in Texas under EIA identifier 55937. It reports service to approximately 506,334 customer accounts and generated about $1.94 billion in annual electric revenue, with a service footprint spanning 242 ZIP codes. As an investor-owned utility, it operates under state public utility commission oversight that reviews rate cases and reliability performance.
In 2023, the average Entergy Texas Inc. customer experienced 546.1 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). That is substantially above the 120–180 minute national benchmark, indicating either storm-prone geography, aging infrastructure, or extended restoration windows. SAIFI — the average number of outage events per customer — was 2.38 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 309.0 minutes — the gap between that figure and the headline 546.1 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Entergy Texas Inc., which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 2538.8 to 546.1 minutes over that window — a meaningful direction for prospective customers and regulators watching capital investment outcomes. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.
SAIFI
2.38 interruptions/yr
Outage frequency (2023)
Customers
506,334
Served in Texas
SAIDI vs. National Average (180 min) 100.0%
546 minutes per customer per year
Minutes without power per year (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 2538.8 | 275.9 | 3.273 | 477,733 |
| 2021 | 999.9 | 280.1 | 3.309 | 488,747 |
| 2022 | 392.2 | 361.3 | 2.494 | 501,210 |
| 2023 | 546.1 | 309.0 | 2.375 | 511,830 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Entergy Texas Inc. serves 242 ZIP codes in Texas.
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Frequently Asked Questions
How reliable is Entergy Texas Inc.?
Entergy Texas Inc. had a SAIDI of 546.1 minutes in 2023, meaning the average customer experienced about 546 minutes of outages that year. This is above the national average, indicating below-average reliability.
What type of utility is Entergy Texas Inc.?
Entergy Texas Inc. is classified as a IOU serving Texas. Investor-owned utilities (IOUs) are for-profit companies regulated by state public utility commissions.
What does SAIDI mean for Entergy Texas Inc.?
SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Entergy Texas Inc. experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Entergy Texas Inc.'s SAIDI to that benchmark shows whether this utility is above or below average.
How many customers does Entergy Texas Inc. serve?
Entergy Texas Inc. serves approximately 506,334 customers in Texas. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.
How has Entergy Texas Inc.'s reliability changed over time?
Entergy Texas Inc. has 4 years of reliability data (2020-2023). SAIDI has remained relatively stable over this period. Review the trend table above for year-by-year detail.
What is SAIDI without major event days?
SAIDI "without major event days" (SAIDI nMED) excludes outages caused by hurricanes, ice storms, and other catastrophic weather events. It better reflects day-to-day infrastructure reliability rather than vulnerability to extreme weather. Both standard SAIDI and SAIDI nMED are shown in the reliability trend table above.
Utility Profile
- Type
- IOU
- State
- Texas
- Customers
- 506,334
- Annual Revenue
- $1.94B
- EIA ID
- 55937
Related Data
Guides
Data Source: U.S. Energy Information Administration Form 861 annual electric power industry survey. ZIP service territory from OpenEI.
Related
Data sourced from official EIA reliability statistics and OpenEI utility rate database. See our methodology for details. Retrieved and formatted by PlainUtility Editorial
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Energy Information Administration (EIA) Form 861. Consult a qualified professional before making decisions based on this data.
Read our methodology — how this data is sourced, computed, and verified.