A structure is only as strong as its foundation. OESCO's foundation is deep in time and broad in scope; that's why the organization built on it is unrivaled in versatility and expertise.

This broad base enables us to serve a wide range of Oklahoma clients, including INTEGRIS Health, Mercy Hospital, St. Anthony Hospital, OU Medicine, Williams Companies, Holly Refining, OG&E, the University of Oklahoma, Oklahoma State University, the National Cowboy & Western Heritage Museum, the Oklahoma City National Memorial, the University of Tulsa, and Oklahoma City University, to name a few. At the same time, we handle projects for national clients, such as American Electric Power, General Electric, Healthcare Corporation of America, General Motors, Kimberly-Clark and the Federal Bureau of Prisons.

Our clients rely on us for the full spectrum of electrical services - from new construction and renovation projects, to routine, day-to-day electrical maintenance, to 24/7 emergency services. We provide energy cost analysis; installation of data, voice and fiber optic cabling; the latest in access control and security installations; comprehensive studies of existing electrical distribution systems; and much more.


With more than 100 years of experience, OESCO provides a knowledgeable eye toward any electrical project we undertake. We've been supplying value engineering ideas for decades - long before the term became an industry buzzword. Our extensive electrical know-how gets built into the very fiber of every project we work on. We've never done business any other way.


For more than three decades, OESCO has been providing design/build and design assist services. We contribute our expertise to the construction team every step of the process — from early-stage electrical budgeting and preconstruction services, all the way through construction.

Cost effectiveness, schedule planning and single-source responsibility are only a few of the reasons to consider OESCO for your design/build or design assist project. As contractors, we know the importance of budget considerations, and we can suggest the most cost-efficient and quality-appropriate electrical systems available today.


We have performed every type of utility project in a variety of substations, with voltages ranging from 69 KV to 500 KV. Our complete, turnkey construction services for greenfield substation sites include excavation and preparation for substation pad and drainage systems; placement of compacted rock for roadways and substation yards; and installation of CCTVs, wave traps and other associated equipment. We also provide concrete piers and pads, electrical bus, air switches, power circuit breakers, control houses, and protection and control circuits and commissioning.

If you’re expanding or upgrading an existing substation, OESCO offers full installation service for critical protection and control work, including line terminals, differential protection, transformer and circuit breaker upgrades and fabrication, and complete, turnkey installation of relay racks.