IOU · Oklahoma · EIA 15474
Public Service Co of Oklahoma
IOU · Oklahoma · 576K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 2038 minutes/customer.
Reliability verdict
Public Service Co of Oklahoma shows near-benchmark chronic reliability in 2023: 107 minutes SAIDI excluding major events (2038 minutes including them) across 576K customers.
- 2038 min
- SAIDI 2023
- 1.98
- SAIFI 2023
- 107 min
- SAIDI ex-MED
- 576K
- 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 Public Service Co of Oklahoma filings show
Public Service Co of Oklahoma is an investor-owned utility operating in Oklahoma under EIA identifier 15474. It reports service to approximately 575,929 customer accounts and generated about $1.93 billion in annual electric revenue, with a service footprint spanning 284 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 Public Service Co of Oklahoma customer experienced 2037.5 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. Over the same period, SAIFI (outage events per customer) was 1.98, putting the typical customer at roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 106.8 minutes, the gap between that figure and the headline 2037.5 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Public Service Co of Oklahoma, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI climbed from 263.7 to 2037.5 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.
2038 minutes per customer per year
Power-out minutes per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Public Service Co of Oklahoma from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Public Service Co of Oklahoma SAIDI trend
Public Service Co of Oklahoma vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
2,038 Higher than most fewer outage minutes than 2% 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 Public Service Co of Oklahoma sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Public Service Co of Oklahoma charges more per customer than 85% of them, and is more reliable (lower SAIDI) than 2% 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: $3,343/year · Latest SAIDI: 2037.5 minutes/year.
SAIDI 2023 breakdown: 2037.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 263.7 | 88.9 | 1.412 | 559,804 |
| 2021 | 138.1 | 113.1 | 1.393 | 565,565 |
| 2022 | 122.8 | 109.8 | 1.362 | 570,502 |
| 2023 | 2037.5 | 106.8 | 1.975 | 572,956 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Public Service Co of Oklahoma serves 284 ZIP codes in Oklahoma.
Frequently Asked Questions
How reliable is Public Service Co of Oklahoma?
Public Service Co of Oklahoma had a SAIDI of 2037.5 minutes in 2023 including major weather events, but 106.8 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 near the national average.
What type of utility is Public Service Co of Oklahoma?
Public Service Co of Oklahoma is classified as a IOU serving Oklahoma.
How many customers does Public Service Co of Oklahoma serve?
Public Service Co of Oklahoma serves approximately 575,929 customers in Oklahoma.
How has Public Service Co of Oklahoma's reliability changed over time?
Public Service Co of Oklahoma 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
- IOU
- State
- Oklahoma
- Customers
- 575,929
- Annual Revenue
- $1.93B
- EIA ID
- 15474
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Public Service Co of Oklahoma. 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 (576K here), outside Oklahoma.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (2037.5 here), outside Oklahoma, 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.