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2025 Vol.45, Issue 6 Preview Page

Research Article

Empirical Analysis of Power Generation and Peak-Dispersion Characteristics of East-West Oriented PV Systems

동서형 태양광의 경사각 및 설치형태에 따른 발전특성과 피크 분산효과 실증 분석

Seung-Hwan Jeong1
,
Yu-Ri Kim2
,
Jeong-Hee Yoo3
,
Hoon Sim4*
정 승환1
,
김 유리2
,
유 정희3
,
심 훈4*
1Senior Researcher, Technology Research Center, JH Energy Co., Ltd.
2Researcher, Technology Research Center, JH Energy Co., Ltd.
3CEO, JH Energy Co., Ltd.
4Director, Technology Research Center, JH Energy Co., Ltd.
1(주)제이에이치에너지 기술연구소, 선임연구원
2(주)제이에이치에너지 기술연구소, 연구원
3(주)제이에이치에너지, 대표이사
4(주)제이에이치에너지 기술연구소, 연구소장
*Corresponding Author
30 December 2025. pp. 197-209
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Abstract

The rapid expansion of photovoltaic (PV) deployment in Korea has intensified the midday generation peak associated with conventional south-facing fixed-tilt systems, contributing to an increase in curtailment events and greater stress on the power grid. East-West (EW) PV configurations have drawn attention as a potential mitigation strategy; however, empirical performance evaluations considering different tilt angles and installation types remain limited. This study analyzed the power generation characteristics and peak-dispersion performance of EW-oriented PV systems installed on an industrial gable roof and a flat-slab rooftop. An eight-month field experiment was conducted from April to November 2025 using a south-facing fixed-tilt system as a reference. Three EW configurations were tested: an 11° dual-slope system on the gable roof and 20° dual-slope and 90° vertical systems on the flat slab. The analysis focused on the monthly energy yield, capacity factor, peak-dispersion behavior, and ground coverage ratio, with particular emphasis on whether EW systems can alleviate the grid burden during hours when curtailment is typically enforced. Results showed that all EW configurations exhibited a noticeable reduction in the midday generation peak compared with that of the south-facing reference. This peak-flattening effect effectively suppressed excessive output during curtailment-prone hours, demonstrating the structural advantages of EW-oriented PV systems in reducing grid stress and lowering the likelihood of curtailment.

Keywords
East-West oriented PV systems
Curtailment
Peak-dispersion
Ground coverage ratio, GCR
키워드
동서형 태양광 시스템
출력제어
피크분산
설치면적비
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 45
  • No :6
  • Pages :197-209
  • Received Date : 2025-12-03
  • Revised Date : 2025-12-22
  • Accepted Date : 2025-12-22
  • DOI :https://doi.org/10.7836/kses.2025.45.6.197
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