Two-Stage Approach for the Assessment of Photovoltaic and Cogeneration Systems: Integration of Regional Distributed Energy Systems and Power-Expansion Planning

Abstract

AbstractDistributed energy systems such as solar power photovoltaics (PV) and cogeneration systems (CGS) are expected to play a main role in future energy systems. However, consumers employ these distributed energy systems based on individual decisions rather than top-down installation planning, so even if the expansion of PV and other renewable energy sources is a national energy policy, it remains uncertain how and when PV installation targets will be realized. Furthermore, when consumers extensively deploy distributed energy systems, the power-expansion planning of utilities will be affected by changes in daily load patterns. In this paper, the authors develop a two-stage model focusing on interactions between the energy system adoption behavior of customers and power-expansion planning of a utility. In the first stage, the authors disaggregate Japan’s Kanto region into 38 areas and then develop an optimum energy system model including PV and CGS for consumers. In the second stage, the demand for elect...