Oklahoma interconnection applications
95 electric utilities serve Oklahoma (EIA-861, 2025): 3 investor-owned utilitys, 30 electric cooperatives, 61 municipal utilitys, 1 state power authority. Together they serve 1,794,551 residential customers; 18,196 residential customers were on net metering at year-end 2025.
Largest utilities in Oklahoma
Investor-owned utility · 774,864 residential customers · Oklahoma
Applications: PowerClerk – OG&E PowerClerk
Interconnection process and documents →Investor-owned utility · 506,245 residential customers · Oklahoma
Applications: PowerClerk – AEP PowerClerk
Interconnection process and documents →Electric cooperative · 59,539 residential customers · Oklahoma
Interconnection process and documents →Municipal utility · 39,944 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 38,163 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 35,514 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 33,788 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 25,042 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 24,981 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 22,775 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 21,697 residential customers · Oklahoma
Interconnection process and documents →Electric cooperative · 20,997 residential customers · Oklahoma
Interconnection process and documents →Export compensation among the researched Oklahoma utilities: Net billing, NEM. Rules differ by utility – see each utility page.
Oklahoma interconnection rule
Rule text read via Cornell LII; official rules.ok.gov not checked. No Level-based interconnection standard, timelines or insurance figures found (Part 7 liability sections 165:40-3-30/31 not read). Statutory DG provisions (17 O.S. §156) not checked (search budget exhausted).
Oklahoma Corporation Commission (OCC)
Interconnection ruleOAC 165:40 (Standard Terms of Purchases from Producers of 300 kW or Less), esp. Subch. 5 Installation and Parallel Operation (165:40-5-1 to 5-32); OAC 165:35-29-2 (Parallel operation of generation facilities) – Standard Terms of Purchases from Purchasers of 300 kW or Less / Parallel operation · source
Applies toOCC-regulated 'cooperative/utility' = electric distribution cooperatives and investor-owned utilities (OG&E, PSO, Empire/Liberty) for PURPA producers <=300 kW (OAC 165:40-1-2). 165:35-29-2: parallel operation requires utility's prior written approval; agreements submitted to OCC. Municipal utilities not covered.
Application formNo statewide application form or level structure; utility/coop application with equipment specifications (165:40-5-8) and Commission-approved purchase agreement (165:40-9-2).
FeesInterconnecting party pays costs beyond normal service terms (165:35-29-2(c)); no fee caps in rule.
External disconnectProducer must install, own and maintain a disconnecting device at a location accessible to cooperative/utility personnel at all times (OAC 165:40-5-11).
Export compensationNEM – OAC 165:40-9 (Optional Net Energy Billing Purchase Rate)
Optional net energy billing for producers <=300 kW: meter runs in reverse within monthly period; monthly net excess credited/paid next period at utility's avoided energy cost (no stated expiry); systems >125% of peak load may be excluded and paid under QF tariff.
OCC-regulated electric cooperatives are bound by OAC 165:40 like IOUs. Municipal utilities are outside OCC jurisdiction and set their own interconnection and net metering policies.
| Level | Up to | Criteria / review / fee |
|---|---|---|
| Producer <=300 kW (single process) | 300 kW | Equipment compatible with line segment; signed purchase agreement |
- OAC 165:40 (LII): https://www.law.cornell.edu/regulations/oklahoma/title-165/chapter-40 (retrieved 2026-11-13)
- OAC 165:40-9-2: https://www.law.cornell.edu/regulations/oklahoma/OAC-165-40-9-2 (retrieved 2026-11-13)
- OAC 165:40-9-3: https://www.law.cornell.edu/regulations/oklahoma/OAC-165-40-9-3 (retrieved 2026-11-13)
- OAC 165:40-5-11: https://www.law.cornell.edu/regulations/oklahoma/OAC-165-40-5-11 (retrieved 2026-11-13)
- OAC 165:35-29-2: https://www.law.cornell.edu/regulations/oklahoma/OAC-165-35-29-2 (retrieved 2026-11-13)
All 95 utilities in Oklahoma
- OG&E716,295
- PSO506,245
- Oklahoma Electric Cooperative Inc.59,539
- City of Edmond39,944
- Northeast Oklahoma Electric Company38,163
- Verdigris Valley Electric Cooperative Inc.35,514
- East Central Oklahoma Electric Cooperative Inc.33,788
- Lake Region Electric Cooperative, Inc.25,042
- Canadian Valley Electric Cooperative, Inc.24,981
- CKenergy Electric Cooperative22,775
- Choctaw Electric Cooperative Inc.21,697
- Kiamichi Electric Cooperative, Inc.20,997
- Central Rural Electric Cooperative, Inc.20,052
- Cotton Electric Cooperative, Inc.19,906
- Stillwater Utilities Authority19,604
- Cookson Hills Electric Cooperative, Inc.17,740
- Red River Valley Rrl Electric Association16,152
- Southeastern Electric Cooperative Inc.15,575
- Cimarron Electric Cooperative15,541
- Tri-County Electric Cooperative, Inc. (OK)15,072
- Indian Electric Cooperative, Inc.14,832
- People's Electric Cooperative14,774
- City of Ponca City13,907
- City of Claremore12,012
- Ozarks Electric Cooperative Corporation11,873
- Northwestern Electric Cooperative Inc.9,644
- Rural Electric Cooperative, Inc.9,157
- City of Altus8,252
- Kay Electric Cooperative4,389
- Arkansas Valley Electric Cooperative Corporation4,272
- Liberty (Empire District)3,951
- Alfalfa Electric Cooperative, Inc.2,646
- Southwest Arkansas E C C220
- Rich Mountain Electric Cooperative, Inc.0
- Tahlequah Public Works Authority0
- City of Duncan0
- Southwest Rural Electric Association Inc.0
- Miami Special Utility Authority0
- Northfork Electric Cooperative, Inc.0
- City of Pryor0
- City of Sallisaw0
- City of Cushing0
- City of Collinsville0
- City of Skiatook0
- Wagoner Public Works Authority0
- Harmon Electric Association Inc.0
- City of Blackwell0
- City of Purcell0
- City of Perry0
- Anadarko Public Works Authority0
- Tecumseh Utility Authority0
- City of Kingfisher0
- City of Marlow0
- City of Pawhuska0
- City of Stilwell0
- City of Watonga0
- City of Frederick0
- City of New Cordell0
- City of Mangum0
- City of Fairview0
- City of Tonkawa0
- City of Stroud0
- City of Lindsay0
- Southwestern Electric Cooperative Inc.0
- City of Pawnee0
- City of Newkirk0
- City of Hominy0
- Prague Public Works Authority0
- Walters Public Works Authority0
- Town of Spiro0
- Town of Mannford0
- City of Wynnewood0
- City of Lexington0
- City of Mooreland0
- City of Comanche0
- City of Waynoka0
- City of Yale0
- Town of Laverne0
- City of Wetumka0
- City of Geary0
- Okeene Public Works Authority0
- City of Pond Creek0
- City of Granite0
- Town of South Coffeyville0
- Copan Public Works Authority0
- Town of Ryan0
- City of Olustee0
- City of Eldorado0
- Town of Fort Supply0
- Goltry Public Works Authority0
- Town of Braman0
- City of Orlando0
- City of Manitou0
- Grand River Dam Authority0
- City of Burlington0
Residential customers in Oklahoma per EIA-861 (2025). Customer counts = bundled + delivery-only service (EIA-861 Part A + Part D). Service territory is reported by county; a county can be served by several utilities.
$500 / month
Unlimited interconnection applications. 12-month agreement, signed online. The agreement starts the day you sign; first invoice right away, then monthly.
- Unlimited interconnection applications
- Single-line diagram and site plan for every application
- Pre-submission check against the utility’s requirements
- Homeowner e-signature link for the authorization
- Filing in your utility portal accounts or by the utility’s method
- Utility questions, corrections and resubmissions
- Follow-up through approval, inspection and PTO
- Customer list, exports, API and webhooks
Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.