Oklahoma Gas & Electric (OG+E) is a regulated electric utility company that serves over 750,000 customers in Oklahoma and western Arkansas.

OGE Energy Corp. (NYSE: OGE), with headquarters in downtown Oklahoma City, is the parent company of Oklahoma Gas and Electric Company, a regulated electric utility, and Enogex Inc., a natural gas pipeline business. OGE Energy and its subsidiaries have about 3,100 employees.

OG&E Electric Services serves more than 801,000 customers in Oklahoma and western Arkansas, and a number of wholesale customers throughout the region. OG&E, with nine power plants capable of producing about 6,100 megawatts, generates about 70% of its electricity from low-sulfur Wyoming coal and 30 percent from natural gas.

OG&E also has roughly 170 megawatts of wind power. Under the plan announced on October 29, 2007, President and CEO Peter Delaney announced that wind power could be increased to about 770 MW.

OG&E is the largest electric utility in the state of Oklahoma. The company delivers all of its electricity across an interconnected transmission and distribution system spanning 30,000 square miles (78,000 km).

OG&E was the first electric company in Oklahoma to offer wind power as a choice to its retail customers in 2003. If one selects "wind power," he gets the same electricity he was getting before, but pays a higher price for it.

In December 2016, OG&E announced that it gave out $7.5 million in "energy efficiency incentives to businesses, schools and government buildings in 2016." A total of 750 organizations benefited from the project. Secondary schools received around $650,000; universities received around $365,000. In one school district, 1 million kWh were cut down through energy-saving projects.

Enogex is engaged in natural gas gathering, processing, transportation, storage and marketing. Enogex operates a natural gas pipeline system with about 8,000 miles (13,000 km) of pipe, six processing plants, and 23 billion cubic feet (650×10^ m) of gas storage capacity, principally in Oklahoma. In 2013, it was decided that Enogex would be merged with a portion of CenterPoint Energy's operations in a limited partnership to be called Enable Midstream Partners.

OGE Energy Resources conducts the company's energy marketing and related activities. Operating in the national commodities markets for electricity and natural gas, Energy Resources' primary role is to optimize the generation, transmission and pipeline assets of OGE Energy.