A Study on Economic Analysis and Compensation Methods for Photovoltaic Performance Degradation in Changing Urban Environments

Ji-Young Eum; Gyeong-Seok Choi; Soo-Hwan Cho

doi:10.7836/kses.2025.45.3.099

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2025 Vol.45, Issue 3 Preview Page Next Page

Research Article

A Study on Economic Analysis and Compensation Methods for Photovoltaic Performance Degradation in Changing Urban Environments 도시 환경 변화에 따른 태양광 발전 성능 저하의 경제적 영향 분석 및 손해배상액 산정방안 연구

30 June 2025. pp. 99-109

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Abstract

As high-density and high-rise urban building construction proceeds, concerns have developed regarding the performance degradation of photovoltaic (PV) systems installed in existing buildings resulting from shading from newly constructed or expanded structures. To facilitate the continued expansion of PV systems, it is necessary to establish institutional frameworks for protection of the rights of PV system owners and for structured compensation systems. This study quantitatively analyzes the economic impact of PV performance degradation on rooftop PV systems and proposes a comprehensive compensation scheme. Three cases—typical, disputed, and extreme—were simulated using SolarPro software with Seoul meteorological data. Economic assessments covered three contract types: net metering, power purchase agreements, and market trading. The results show that shading leads to annual power losses of 1.7, 9.0, and 15.3% in the respective cases. Economic analyses revealed significant financial impacts, including higher electricity charges and revenue losses, with conversion of revenues into additional electricity charges in some cases. The proposed compensation scheme incorporates both short-term power losses and long-term effects, including module degradation, inverter efficiency reduction, cascading cumulative shading effects, and economic factors such as inflation and electricity charge increases. This compensation scheme systematically quantifies damages while incorporating the unique characteristics of urban PV systems and their contractual types. The proposed framework provides objective criteria for resolving PV-related conflicts while balancing responsibilities between parties, thereby contributing to urban solar policy development.

Keywords

Urban photovoltaic systems

Shading effects

Building shadow simulation

Economic impact analysis

Compensation framework

키워드

도시 태양광발전시스템

음영 효과

건축물 음영 시뮬레이션

경제적 영향 분석

손해배상 체계

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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 :3
Pages :99-109
Received Date : 2025-05-07
Revised Date : 2025-05-29
Accepted Date : 2025-06-04
DOI :https://doi.org/10.7836/kses.2025.45.3.099

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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