Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
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Self-Consumption Solar PV Economic Rate Analysis for RE100 Companies in Korea

한국 RE100 기업의 자가소비 태양광 발전 경제적 비율 분석

  • Jong Yi Lee (Energy Environment Policy and Technology, Graduate School of Energy and Environment (KU-KIST Green School), Korea University) ;
  • Kyung Nam Kim (Energy Environment Policy and Technology, Graduate School of Energy and Environment (KU-KIST Green School), Korea University)
  • 이종의 (에너지환경정책기술학과, 에너지환경대학원(그린스쿨), 고려대학교) ;
  • 김경남 (에너지환경정책기술학과, 에너지환경대학원(그린스쿨), 고려대학교)
  • Received : 2023.10.13
  • Accepted : 2023.12.11
  • Published : 2023.12.31
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Abstract

Efforts are being made to respond to global warming. Interest in and demand for the private sector-led RE100 campaign is also increasing. Self-built solar power generation, one of the implementation tools for RE100, is not expanding. However, it can be an economical means of implementation in the long run. In this study, we intend to analyze the impact on the optimal ratio of self-solar power generation using HOMER simulation. OPR defines the optimal solar power generation ratio and looks into what changes there are in the optimal solar power ratio when self-power consumption increases and external power purchase price changes. As a result, the optimal rate of self-solar power generation has a low impact even if self-power consumption increases. As the external power unit price increases, the optimal ratio increases, and at a power unit price of 100 KRW/kWh, OPR is 24%; at 200 KRW/kWh OPR is 31%; and at 300 KRW/kWh OPR is 34%. This shows that the electricity price replaced during the life cycle has a high impact on the economic feasibility of solar power generation. However, when the external power unit price reached a certain level, the increase in OPR decreased. This shows that it is difficult for domestic companies to achieve RE100 based on the economic feasibility of solar energy alone. Therefore, efforts are needed to supply renewable energy in the public sector.

Keywords

Acknowledgement

본 연구는 정부(환경부)의 재원으로 한국환경산업 기술원의 탄소중립 특성화대학원 사업의 지원, 그리고 KU-KIST 스쿨 운영사업의 지원을 받아 수행된 연구 입니다.

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