A Study on Generation Characteristics of Photovoltaic Plants in the Sub-regions of Jeju Island through Analysis of Capacity Factors and Sunshine Durations

Siyu Chen; Gaemyoung Lee

doi:10.7836/kses.2025.45.2.033

All Issue

2025 Vol.45, Issue 2 Preview Page Next Page

Research Article

A Study on Generation Characteristics of Photovoltaic Plants in the Sub-regions of Jeju Island through Analysis of Capacity Factors and Sunshine Durations 이용률과 일조시간 분석을 통한 제주도 세부 지역 태양광발전소의 발전특성에 대한 고찰 연구

30 April 2025. pp. 33-45

PDF XML

Abstract

This study investigated and compared sunshine duration and capacity factors of photovoltaic power generation across four regions of Jeju Island. The regional classification system used in this study was based on climate divisions defined by the Korea Meteorological Administration, which differ from administrative divisions. The four regions—northern, western, eastern, and southern—exclude the mountainous region, which has few photovoltaic power plants. This classification system was chosen to utilize long-term accumulated weather data (e.g., sunshine duration) managed by the Korea Meteorological Administration. Five years of generation data from at least three photovoltaic power plants in each of the four regions were obtained from the Korea Power Exchange and used for the analysis. Strong positive correlations were found between sunshine duration and the capacity factor of photovoltaic power generation in all four regions. When comparing the capacity factors of the four regions, the northern region showed rates approximately 10% lower than those of the other regions. The difference in capacity factors—approximately 45%—between the northern and southern regions was particularly significant in winter. This phenomenon might have been triggered by the Foehn effect in Halla Mountain at the center of Jeju Island, which is 1,950 m high. This study provides seasonal and annual capacity factor reference data for four regions of Jeju Island. The data should be useful for new photovoltaic power plant investors and operators. Furthermore, the analysis conducted in this study demonstrated that utilizing accumulated sunshine duration data is an effective method for improving the reliability of short-term photovoltaic power generation data.

Keywords

Photovoltaic Plant

Capacity Factor

Sunshine Duration

Renewable Energy

Solar Energy

Foehn Phenomenon

키워드

태양광발전소

이용률

일조시간

신재생에너지

제주(Jeju)

태양에너지

푄현상

References

Shin, Y., Jung, R., Ko, J., and Jeon, J., Present Situation and Utilization-Rate of a Mass Solar-Power Plant in Korea, Proceedings of KIEE Power Engineering Division Autumn Conference, pp. 469-471, November 2008, Jeju, Republic of Korea.

Choi, B. and Kwak, W., A Study on Regional Capacity factor of Photovoltaic Power Plant, Proceedings of the Korean Society for New and Renewable Energy Autumn Conference, pp. 110-113, October 2008, Busan, Republic of Korea.

Shin, Y., Baek, S., Hwang, B., Lim, J., and Kim, K., Current Situation and Utilization-Rate as of Both Solar and Wind Powerplant in Korea, Proceedings of KIEE Power Engineering Division Autumn Conference, pp. 303-305, October 2011, Cheonan, Republic of Korea.

Yi, K., Regional Capacity Factor and Economic Feasibility of Domestic Photovoltaic Power Plant, Master thesis, Inha University, 2016.

Sánchez-Pérez, P. and Kurtz, S., Capacity Factor Analysis of U.S. PV System Reliability and Performance, IEEE Journal of Photovoltaics, Vol. 10, No. 3, pp 818-823, 2020, https://doi.org/10.1109/JPHOTOV.2020.2968418.

10.1109/JPHOTOV.2020.2968418

Doolla, S. and Banerjee, R., Diffusion of Grid-Connected PV in India: An Analysis of Variations in Capacity Factor, Proceedings of 2010 35th IEEE Photovoltaic Specialists Conference, pp. 2349-2352, June 2010, Honolulu, USA, https://doi.org/10.1109/PVSC.2010.5614415.

10.1109/PVSC.2010.5614415

Lee, G. and Hwang, C., Analysis on the Generation Characteristics of the 1MW PV Plant in the Jeju Island, The Transactions of the Korean Institute of Electerical Engineers, Vol. 64, No 5, pp. 726-731, 2015.

10.5370/KIEE.2015.64.5.726

Baatarbileg, A., Ko, S., SaKong, J., Kwon, H., and Lee, G., Contribution of Large-Scale PV Plants in the Respective Region of the Jeju Island to Electric Power during Summer Peak Times, The Transactions of the Vol. 66, No. 12, pp. 1873-1878, 2017.

Jeju Special Self-government Province, 2035 Carbon-Neutral, 2024. https://www.jeju.go.kr/jejuenergy/loadmap/vision.htm. last accessed on the 15^th February 2025.

Jeju Branch of Korea Power Exchange, 2024 Sumer-season Outlook and Countermeasures for Electric Power Demand and Supply in Jeju, Jeju, Republic of Korea, 2024.

Noh, J., Lee, S., Choi, D., Baek, S., and Park, J., Overseas Cases Survey on Renewable Energy Curtailment and Compensation, Proceedings of KIEE Summer Conference, pp. 226-227, July 2021, Pyeongchang, Republic of Korea.

Korea Power Exchange, Electricity Market Operating Rules, 2020. https://www.kpx.or.kr/board.es?mid=a10205010000&bid=0030&act=view&list_no=48143&tag=&nPage=2. last accessed on 15^th February 2025.

Korea Power Exchange, Operating Rules for the Jeju Pilot Project on Electricity Market System Improvement, 2023. https://new.kpx.or.kr/board.es?mid=a10205010000&bid=0030&act=view&list_no=70390&tag=&nPage=1. last accessed on 15^th February 2025.

Jeju Regional Office of Meteorology, Analysis on Characteristics of Climate Change in Jeju, Jeju, Republic of Korea, pp. 2-3, 2019.

KMA (Korea Meterological Adminstration), (KMA Weather Data Service) Open MET Data Portal, https://data.kma.go.kr/cmmn/main.do. last accessed on 14^th October 2024.

Choi, Y. and Cho, K., Basic Statistics for Behavioral Science Research, Shinjeong Publishing Co., Seoul, Republic of Korea, pp. 184-185, 2021.

Kim, D., Characteristics of Sunshine and Cloudiness in Jeju Island, Research on Jeju Development, Vol. 15, pp. 179-201, 2011.

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 :2
Pages :33-45
Received Date : 2025-02-23
Revised Date : 2025-03-12
Accepted Date : 2025-03-18
DOI :https://doi.org/10.7836/kses.2025.45.2.033

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

All Issue