Oklahoma Supreme Court Affirms Commission Order Letting OG&E Continue Serving Customers in Lake Region’s Certified Territory

The Oklahoma Supreme Court on Oct. 28, 2025, affirmed a final order of the Oklahoma Corporation Commission that denied Lake Region Electric Cooperative’s request to enjoin Oklahoma Gas and Electric Company (OG&E) from serving electric-consuming facilities owned by the Cherokee Nation and Cherokee Nation Enterprises, LLC, inside Lake Region’s certified retail territory.

The court wrote that Lake Region alleged OG&E’s service violated the Retail Electric Supplier Certified Territory Act (RESTA), 17 O.S. §§158.21–158.32, and pointed to §158.25(e) as the provision OG&E breached. The commission had concluded OG&E “did not simply extend its service using its own retail distribution system as permitted under the 1 megawatt/large load exception,” but instead reached the facilities by using third-party transmission lines — a central factual finding in the case (final order issued 08/18/2020; case number 119054).

Despite that statutory concern, the commission denied injunctive relief after weighing equitable defenses; it found Lake Region had delayed seeking a remedy, that waiver and estoppel defenses applied, and that the equities did not favor issuing an injunction. The Supreme Court said those equitable considerations, and the record specific to this dispute, supported affirming the commission’s order.

On the central statutory question, the court relied on its recent precedents, including Oklahoma Electric Cooperative v. State ex rel. Oklahoma Corporation Commission (2025) and related 2025 opinions, and reiterated that the RESTA large-load exception does not authorize a supplier to extend retail service into another supplier’s certified territory by connecting through third-party transmission lines. The court nevertheless declined to enjoin OG&E in this case because of the commission’s equitable findings.

The decision leaves intact the commission’s factual and equitable rulings in this matter while clarifying that the large-load exception cannot be read as permitting third‑party transmission line extensions to bypass certified territory protections. The case is recorded as Lake Region Electric Cooperative, Inc. v. State ex rel. Oklahoma Corporation Commission, case no. 119054; decision dated Oct. 28, 2025.

Next steps: the Supreme Court’s opinion resolves this appeal and the commission’s order is affirmed; no further action by the court is recorded in the opinion.