, OEPC or for short, is an electric utility with its exclusive operational area of Okinawa Prefecture, Japan. It is the smallest by electricity sales among JapanâÂÂs ten regional power utilities. For comparison, its electricity sales is approximately <sup>1</sup>âÂÂ<sub>40</sub> of that of The Tokyo Electric Power Company. However, it is the largest by revenue among companies headquartered in Okinawa.