1Faculty of Engineering, Mercu Buana University, Jl. Meruya Selatan No. 1, West Jakarta 11650, DKI Jakarta, Indonesia
The quality of construction results in large-scale thermal power plant Engineering, Procurement, and Construction (EPC) projects in Indonesia faces challenges of technical and managerial complexity, where subcontractors play a vital role as the main implementers in the field. This study aims to analyze the influence of human resources, construction materials, work equipment, finance, communication and collaboration, field supervision, and occupational health and safety (OHS) factors on construction quality from the perspective of subcontractors. This study uses a quantitative approach with the Partial Least Squares - Structural Equation Modeling (PLS-SEM) method for hypothesis testing and Importance-Performance Map Analysis (IPMA) to determine strategic improvement priorities. Data were collected through questionnaires distributed to subcontractor respondents involved in power plant projects with a capacity above 100 MW. The results show that the model explains 70.6% of the variance in construction quality. The findings prove that the factors of Finance, Human Resources, Work Equipment, Communication and Collaboration, and Field Supervision have a positive and significant effect on construction quality, while the factors of Construction Materials and HSE (Health, Safety, and Environment) have no significant effect. Based on IPMA analysis, the Financial factor was identified as the most dominant factor with the highest level of importance but the lowest performance, making it a top priority for improvement. This study recommends improving cash flow management by subcontractors and ensuring accurate payments by main contractors as key strategies for quality improvement.
Keywords: Construction Quality, EPC Project, Thermal Power Plant, Subcontractor, PLS-SEM, IPMA, Finance.
How to cite this article: Hartanto W, Rimawan E, Amin M. Analysis of Factors Affecting Construction Quality in Large-Scale Thermal Power Plant EPC Projects in Indonesia from a Subcontractor Perspective. Int J Drug Deliv Technol. 2026;16(7s): 825-834; DOI: 10.25258/ijddt.16.7s.88
Source of support: None
Conflict of interest: None