Deregulation in a power-supply system which includes photovoltaic power generation systems and/or cogeneration systems, is indispensable for making the system more efficient and ro bust. Effectiveness of deregulation measures have been analysed from the viewpoint of micro-economics and game theory which are normative approaches based on rather simplified models of the real system. However, long-term and short-term stability of the system, for example, cannot be evaluated without more detailed model structure. This paper discusses effectiveness of a simulation-model approach for evaluating the behaviour of the deregulated market.
electric power system; deregulation; power market; dispersed generation system; autonomous decentralized system; industrial organization.