For a residential customer using 1,000kWh of electricity per month, the rate increase will be $2.32 per month.
The approval will enable the company to start recovering the cost of significant electric system expansions and upgrades.
OG&E vice president of regulatory affairs Howard Motley said this increase will help ensure that the company is able to continue to provide quality service at some of the lowest prices in the US.
OG&E, a subsidiary of US-based OGE Energy, serves more than 785,000 electric customers in a service area spanning 30,000 square miles, including about 66,000 customers in western Arkansas.
