The number of companies registered in the Korea Power Exchange (KPX), the mediator of wholesale trading of power, exceeded 4,000 on June 8. KPX had only 10 registered companies when it established in 2001. Among 4,000 companies, 3,868 outfits (97%) are renewable power generators, and 3,718 companies are PV operators. The total capacity registered reached 121,738MW as of June 8. Jeonnam has most (19%) PV companies registered at KPX, followed by Jeju, Jeonbuk, and Chungnam.