PSO is a division of AEP, headquartered in Tulsa. PSO provdes electicity for much of eastern and southwestern Oklahoma.
Most PSO system maintenance is on the AEP Trunked System.
KAMO Electric Cooperative, headquartered in Vinita, is a Generation and Transmission (G&T) cooperative serving portions of 9 counties in northeast Oklahoma
Verdigris Valley Electric Cooperative, heaadquartered in Collinsville, provides electricity for portions of Nowata, Osage, Rogers, Tulsa and Washington Counties.
Southwestern Power Administration, headquartered in Tulsa, is an agency of the U.S. Department of Energy. SPA is responsible for marketing and distributing hydroelectric power from U.S. Army Corps of Engineers dams
Bixby Telephone Company, headquartered in Bixby, provides telephone service for southern Tulsa and Northern Okmulgee Counties