Economic Viability of Photovoltaic Systems Based on the Number of Floors in Modular Multi-Family Housing in Korea

Seyeon Lee, Chanwoo Jung and Yonghan Ahn ()
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Seyeon Lee: Department of Smart City Engineering, Hanyang University, ERICA Campus, Ansan 15588, Republic of Korea
Chanwoo Jung: Institute of Environment and Energy, Hanyang University, ERICA Campus, Ansan 15588, Republic of Korea
Yonghan Ahn: Department of Architectural Engineering, Hanyang University, ERICA Campus, Ansan 15588, Republic of Korea

Energies, 2024, vol. 17, issue 24, 1-18

Abstract: Korea is making efforts to reduce carbon emissions from buildings and, as part of this initiative, the government is promoting the expansion of modular housing. This study analyzed the feasibility of achieving zero-energy certification and the economic viability of applying photovoltaic (PV) systems to modular housing in Korea. Energy consumption and self-sufficiency were calculated for low-rise (4 floors), mid-rise (13 floors), and high-rise (30 floors) buildings. Economic viability was assessed according to the payback period, net present value (NPV), and benefit–cost ratio (B/C ratio). Construction costs of modular buildings are higher than those of reinforced concrete (RC) buildings, and when only PV systems are applied, it is not possible to achieve a high grade in high-rise buildings. The results indicate that economic feasibility is lacking across all building heights, leading to the conclusion that further research on cost reduction and expanded government support are necessary. This study presents a sustainable building model for Korea that is expected to contribute to future policy decisions.

Keywords: modular; public multi-family housing; zero-energy building; photovoltaic (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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