The decentralization might be the mega trend toward the new social system for the next century. Especially, reorganization of the electricity business, first initiated in the UK 1989, has acceleratedly unfolded globally and trust into the stage of retailing competition in the UK and the US. In this paper, decentralization of electricity business around the world are surveyed. Further, rule-making among market players and technical requirements at open electricity market are touched on.
