How reliable is the power in Oklahoma?
Utilities that report under the IEEE 1366 standard cover 1,014,916 of the 2,073,588 customers EIA lists for Oklahoma (49%). The rule is 60% and 100,000 customers, so Oklahoma has no state number. Utilities on another method serve 976,832 customers.
Why Oklahoma has no state figure
20 utilities use the IEEE 1366 method, 8 use another, and 40 gave no reliability figures. The two methods are not averaged together.
The largest Oklahoma utilities that report under IEEE 1366
Public Service Co of Oklahoma serves 57% of the customers in the Oklahoma IEEE 1366 group: 49% of lost customer-minutes with major events, 55% without.
- Public Service Co of Oklahoma: 579,031 customers (57%), 117 min without and 188 with; 49% of lost minutes with major events, 55% without.
- Canadian Valley Elec Coop, Inc: 27,599 customers (3%), 182 min without and 591 with; 7% of lost minutes with major events, 4% without.
- Kiamichi Electric Coop, Inc: 23,013 customers (2%), 331 min without and 473 with; 5% of lost minutes with major events, 6% without.
All Oklahoma utilities in the 2024 file
68 utilities in the 2024 EIA-861 files for Oklahoma: 20 follow IEEE 1366, 8 use another method, 40 filed no reliability figures. 28 are listed.
| Cimarron Electric Coop | Cooperative | IEEE 1366 | 19,779 | 39 | 80 | 0.50 | 0.89 | 51 | 1 of 18 | — |
|---|---|---|---|---|---|---|---|---|---|---|
| Stillwater Utilities Authority | Municipal | IEEE 1366 | 22,191 | 58 | 145 | 0.70 | 1.04 | 60 | 2 of 18 | — |
| Indian Electric Coop, Inc | Cooperative | IEEE 1366 | 20,643 | 64 | 84 | 0.52 | 0.59 | 23 | 3 of 18 | — |
| Ozarks Electric Coop Corp - (AR) | Cooperative | IEEE 1366 | 12,930 | 68 | 325 | 0.89 | 1.91 | 79 | 4 of 18 | — |
| Oklahoma Electric Coop Inc | Cooperative | IEEE 1366 | 64,790 | 71 | 89 | 1.11 | 1.18 | 21 | 5 of 18 | — |
| City of Edmond - (OK) | Municipal | IEEE 1366 | 44,461 | 82 | 107 | 1.27 | 1.36 | 23 | 6 of 18 | — |
| City of Ponca City - (OK) | Municipal | IEEE 1366 | 15,876 | 99 | 144 | 1.01 | 1.55 | 31 | 7 of 18 | — |
| City of Claremore | Municipal | IEEE 1366 | 13,327 | 104 | 179 | 1.86 | 1.98 | 42 | 8 of 18 | — |
| Central Rural Electric Cooperative, Inc | Cooperative | IEEE 1366 | 24,360 | 108 | 199 | 1.11 | 1.30 | 45 | 9 of 18 | — |
| Lake Region Electric Coop, Inc - (OK) | Cooperative | IEEE 1366 | 26,481 | 116 | 340 | 1.08 | 1.83 | 66 | 10 of 18 | — |
| Public Service Co of Oklahoma | Investor Owned | IEEE 1366 | 579,031 | 117 | 188 | 1.30 | 1.55 | 38 | 11 of 18 | — |
| Cookson Hills Elec Coop, Inc | Cooperative | IEEE 1366 | 18,978 | 136 | 399 | 0.81 | 1.09 | 66 | 12 of 18 | — |
| Rural Electric Coop, Inc - (OK) | Cooperative | IEEE 1366 | 12,700 | 154 | 639 | 1.44 | 2.73 | 76 | 13 of 18 | — |
| East Central Oklahoma Elec Coop Inc | Cooperative | IEEE 1366 | 37,090 | 170 | 286 | 1.38 | 1.66 | 41 | 14 of 18 | — |
| Canadian Valley Elec Coop, Inc | Cooperative | IEEE 1366 | 27,599 | 182 | 591 | 1.19 | 1.56 | 69 | 15 of 18 | — |
| Cotton Electric Coop, Inc | Cooperative | IEEE 1366 | 23,594 | 225 | 356 | 2.27 | 3.13 | 37 | 16 of 18 | — |
| Southeastern Electric Coop Inc - (OK) | Cooperative | IEEE 1366 | 17,416 | 254 | 325 | 1.00 | 2.25 | 22 | 17 of 18 | — |
| Kiamichi Electric Coop, Inc | Cooperative | IEEE 1366 | 23,013 | 331 | 473 | 2.39 | 2.77 | 30 | 18 of 18 | — |
| Oklahoma Gas & Electric Co | Investor Owned | Other method | 833,706 | 98 | 286 | 0.82 | 1.70 | — | Not ranked | other method, not comparable |
| Verdigris Valley Elec Coop Inc | Cooperative | Other method | 39,197 | 362 | 607 | 2.20 | 2.56 | — | Not ranked | other method, not comparable |
| CKenergy Electric Cooperative | Cooperative | Other method | 26,996 | 325 | 919 | 4.41 | 4.84 | — | Not ranked | other method, not comparable |
| People's Electric Cooperative | Cooperative | Other method | 23,798 | 194 | 239 | 2.42 | 2.60 | — | Not ranked | other method, not comparable |
| Tri-County Electric Coop, Inc (OK) | Cooperative | Other method | 22,970 | 115 | 165 | 1.12 | 1.46 | — | Not ranked | other method, not comparable |
| Choctaw Electric Coop Inc | Cooperative | Other method | 22,389 | — | 831 | — | 4.10 | — | Not ranked | other method, not comparable |
| Alfalfa Electric Coop, Inc | Cooperative | Other method | 7,563 | 8 | 81 | 0.31 | 0.50 | — | Not ranked | other method, not comparable; under 10,000 customers |
| Empire District Electric Co | Investor Owned | IEEE 1366 | 5,928 | 88 | 1,110 | 0.89 | 2.95 | 92 | Not ranked | under 10,000 customers |
| Arkansas Valley Elec Coop Corp | Cooperative | IEEE 1366 | 4,729 | 137 | 200 | 1.39 | 2.24 | 32 | Not ranked | under 10,000 customers |
| Grand River Dam Authority | State | Other method | 213 | 30 | 30 | 0.80 | 0.80 | — | Not ranked | other method, not comparable; under 10,000 customers |
Oklahoma utilities with no reliability figures
40 in the sales file, no SAIDI or SAIFI row; the 25 largest are listed.
| Utility | Type | Customers |
|---|---|---|
| Northeast Oklahoma Electric Co | Cooperative | 41,995 |
| Red River Valley Rrl Elec Assn | Cooperative | 17,766 |
| Northwestern Electric Coop Inc - (OK) | Cooperative | 11,966 |
| City of Altus - (OK) | Municipal | 9,443 |
| Kay Electric Coop | Cooperative | 5,899 |
| Southwest Arkansas E C C | Cooperative | 237 |
| Southwestern Electric Coop Inc - (NM) | Cooperative | 7 |
| City of Collinsville - (OK) | Municipal | — |
| City of Kingfisher - (OK) | Municipal | — |
| City of Newkirk - (OK) | Municipal | — |
| Wagoner Public Works Authority | Municipal | — |
| City of Stilwell - (OK) | Municipal | — |
| Southwest Rural Elec Assn Inc | Cooperative | — |
| City of Skiatook - (OK) | Municipal | — |
| Tecumseh Utility Authority | Municipal | — |
| City of Comanche - (OK) | Municipal | — |
| City of Pond Creek - (OK) | Municipal | — |
| Harmon Electric Assn Inc | Cooperative | — |
| Anadarko Public Works Authority | Municipal | — |
| City of Lindsay - (OK) | Municipal | — |
| City of Purcell - (OK) | Municipal | — |
| City of Fairview - (OK) | Municipal | — |
| City of Marlow - (OK) | Municipal | — |
| City of Pawhuska - (OK) | Municipal | — |
| City of Mooreland - (OK) | Municipal | — |
The biggest Oklahoma utilities against the U.S.
- Oklahoma Gas & Electric Co (investor owned, 40% of Oklahoma customers in the file): reports on another method, SAIFI 1.70, not compared with the U.S. figure.
- Public Service Co of Oklahoma (investor owned, 28% of Oklahoma customers in the file): SAIDI without major events 117 min, 13 below the U.S. 129; with major events 188 min against 662.
- Oklahoma Electric Coop Inc (cooperative, 3% of Oklahoma customers in the file): SAIDI without major events 71 min, 59 below the U.S. 129; with major events 89 min against 662.
- City of Edmond - (OK) (municipal, 2% of Oklahoma customers in the file): SAIDI without major events 82 min, 47 below the U.S. 129; with major events 107 min against 662.
- Northeast Oklahoma Electric Co (cooperative, 2% of Oklahoma customers in the file): no reliability figures filed.
Oklahoma by type of utility
Among Oklahoma utilities that report under IEEE 1366, municipal utilities average 82 minutes without major events and cooperative utilities 141.
| Type | Utilities | Customers | SAIDI without | Median utility | SAIDI with |
|---|---|---|---|---|---|
| Investor Owned | 2 | 584,959 | 116 | 103 | 198 |
| Cooperative | 14 | 334,102 | 141 | 137 | 286 |
| Municipal | 4 | 95,855 | 82 | 91 | 132 |
Oklahoma report card
Smart meters: 100% of residential meters, 21 utilities (U.S. 92%). Oklahoma time-based rates: 3 of 25 utilities, 36.0% of residential customers enrolled (U.S. 10.6%). Oklahoma efficiency spend: $34.5 per customer (U.S. $124.2). Demand response: 136 W per customer (U.S. 77). Oklahoma net-metered systems: 10.7 per 1,000 customers. Rankings.
Is your Oklahoma utility better or worse than the Oklahoma median?
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- Oklahoma against all states
- Oklahoma utilities among the best and worst
- Oklahoma utility reliability and price by company
- Oklahoma major outage reports from the Department of Energy
- Oklahoma electricity prices
- Oklahoma help with your bill
28 Oklahoma filings in EIA-861 2024 (retrieved 2026-10-01), 18 ranked utilities. Method and sources.
Questions
Why is Oklahoma not ranked?
IEEE 1366 reporters cover 49% of Oklahoma customers, under the 60% and 100,000 rule.
Which Oklahoma utility reported the fewest and the most minutes?
Among 18 utilities with 10,000+ customers: Cimarron Electric Coop 39 minutes without major events, and Kiamichi Electric Coop, Inc 331.
Which Oklahoma utilities use which method?
20 follow IEEE 1366, 8 use another method, 40 filed no reliability figures.